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Linux: AM572x USB gadget completion handler delay

mahesh kalmeshwar
Expert 1005 points

Tool/software: Linux

HI Bin,

Details:Board AM572x,Linux 4.13.xx

Issue: Observation -Delay between 2  successive  call to USB gadget completion handler is ~2000 micro seconds.

query:How to reduce the delay.

Steps to reproduce:Using g_webcam application.

 

Please let me know any further information required?

  • 0
    TI__Guru**** 169391 points
    Mahesh,

    The Linus USB gadget driver stack has multiple layers, please
    - specify the exact function name of the completion handler you referred to;
    - provide kernel logs showing the delay;
  • 0 in reply to Bin Liu
    TI__Mastermind 26215 points
    Mahesh,
    Would you please reply to Bin's questions? if the problem is gone and there is no reply, we will be closing this post next week.
  • 0 in reply to Bin Liu
    Prodigy 30 points

    Adding few more details below

    Platform: TI-AM572x
    linux-kernel-version: 4.9.28
    ti-sdk:    ti-processor-sdk-linux-am57xx-evm-04.01.00.06-Linux-x86-Install.bin
    Issue: USB Video completion handler callback.

    1. Completion Handler Latency:
    Using g_webcam.ko (patch and ko as per attachment) and usb_f_uvc.ko (patch and ko as per attachment) for streaming video(1280x720) to PC.
    Observing latency of completion handler call is ~4000usecs whereas in another arm platform it is ~800usecs for the same.
    Attached log file sample (uvc-comp-handler-delay-logs.txt).
    This latency is causing pile up of video packets in the previous layers.
    Note:
    Latency measured for UVC completion handler function (uvc_video_complete) in drivers/usb/gadget/functions/uvc_video.c file.
    API (do_gettimeofday) is used to measure latency.

    2664.NV12_Support.tar

    Fullscreen uvc-comp-handler-delay-logs.txt Download 
    root@am57xx-evm:~/def_gadget_nv12# ./uvcgadget -d /dev/video1 -i 1280x720.yuv &
[1] 1075
open succeeded, file descriptor = 3
device is dwc3-gadget on bus gadget
root@am57xx-evm:~/def_gadget_nv12# [  136.483535] g_webcam gadget: high-speed config #1: Video
[  136.488879] g_webcam gadget: uvc_function_set_alt(0, 0)
[  136.494123] g_webcam gadget: reset UVC Control
[  136.498591] g_webcam gadget: uvc_function_set_alt(1, 0)
[  136.653520] g_webcam gadget: uvc_function_set_alt(1, 0)
bRequestType a1 bRequest 87 wValue 0100 wIndex 0001 wLength 001a
streaming request (req 87 cs 01)
bRequestType 21 bRequest 01 wValue 0100 wIndex 0001 wLength 001a
streaming request (req 01 cs 01)
setting probe control, length = 26
bRequestType a1 bRequest 81 wValue 0100 wIndex 0001 wLength 001a
streaming request (req 81 cs 01)
bRequestType a1 bRequest 87 wValue 0200 wIndex 0200 wLength 0002
control request (req 87 cs 02)
bRequestType 21 bRequest 01 wV[  155.761289] g_webcam gadget: uvc_function_set_alt(1, 1)
alue 0100 wIndex 0001 wLength 001a
streaming request (req 01 cs[  155.768422] g_webcam gadget: reset UVC
 01)
setting probe control, length = 26
bRequestType a1 bRequest 82 wValue 0100 wIndex 0001 wLength 001a
streaming request (req 82 cs 01)
bRequestType a1 bRequest 83 wValue 0100 wIndex 000[  155.791027] ------------[ cut here ]------------
[  155.799176] WARNING: CPU: 0 PID: 1075 at drivers/usb/dwc3/ep0.c:317 dwc3_ep0_out_start+0x84/0x88 [dwc3]
[  155.808607] Modules linked in: g_webcam(O) usb_f_uvc(O) videobuf2_vmalloc videobuf_core libcomposite xhci_plat_hcd xhci_hcd usbcore xfrm_user xfrm)
[  155.876562] CPU: 0 PID: 1075 Comm: uvcgadget Tainted: G           O    4.9.28-geed43d1050 #8
[  155.885033] Hardware name: Generic DRA74X (Flattened Device Tree)
[  155.891147] Backtrace: 
[  155.893614] [<c020b29c>] (dump_backtrace) from [<c020b558>] (show_stack+0x18/0x1c)
[  155.901214]  r7:00000009 r6:600f0093 r5:00000000 r4:c1022410
[  155.906896] [<c020b540>] (show_stack) from [<c04c9f40>] (dump_stack+0x8c/0xa0)
[  155.914147] [<c04c9eb4>] (dump_stack) from [<c022dcf0>] (__warn+0xec/0x104)
[  155.921135]  r7:00000009 r6:bf515418 r5:00000000 r4:00000000
[  155.926817] [<c022dc04>] (__warn) from [<c022ddc0>] (warn_slowpath_null+0x28/0x30)
[  155.934416]  r9:00000000 r8:c103e20c r7:bf62b5f4 r6:fe445000 r5:00000008 r4:00000023
[  155.942200] [<c022dd98>] (warn_slowpath_null) from [<bf511584>] (dwc3_ep0_out_start+0x84/0x88 [dwc3])
[  155.951474] [<bf511500>] (dwc3_ep0_out_start [dwc3]) from [<bf511608>] (dwc3_ep0_stall_and_restart+0x80/0x84 [dwc3])
[  155.962037]  r7:bf62b5f4 r6:00000001 r5:ec0e3810 r4:ed9ac900
[  155.967734] [<bf511588>] (dwc3_ep0_stall_and_restart [dwc3]) from [<bf511654>] (dwc3_gadget_ep0_set_halt+0x2c/0x40 [dwc3])
[  155.978821]  r7:bf62b5f4 r6:a00f0013 r5:ed9ac900 r4:ec0e3890
[  155.984525] [<bf511628>] (dwc3_gadget_ep0_set_halt [dwc3]) from [<bf4e508c>] (usb_ep_set_halt+0x1c/0x20 [udc_core])
[  155.995001]  r7:bf62b5f4 r6:d56d9800 r5:ed1ba700 r4:40405501
[  156.000699] [<bf4e5070>] (usb_ep_set_halt [udc_core]) from [<bf62b69c>] (uvc_v4l2_ioctl_default+0xa8/0xb8 [usb_f_uvc])
[  156.011447] [<bf62b5f4>] (uvc_v4l2_ioctl_default [usb_f_uvc]) from [<c06db9e0>] (__video_do_ioctl+0xdc/0x30c)
[  156.021398]  r5:40405501 r4:00000001
[  156.024986] [<c06db904>] (__video_do_ioctl) from [<c06db5b8>] (video_usercopy+0x18c/0x4bc)
[  156.033284]  r10:00000001 r9:00000000 r8:beb598b0 r7:d57dbe18 r6:00000040 r5:00000040
[  156.041142]  r4:40405501
[  156.043682] [<c06db42c>] (video_usercopy) from [<c06db900>] (video_ioctl2+0x18/0x1c)
[  156.051456]  r10:00000000 r9:d57da000 r8:d56d9c00 r7:beb598b0 r6:40405501 r5:ed8d5300
[  156.059315]  r4:d56d9800
[  156.061858] [<c06db8e8>] (video_ioctl2) from [<c06d665c>] (v4l2_ioctl+0xa8/0xe0)
[  156.069286] [<c06d65b4>] (v4l2_ioctl) from [<c033eba8>] (do_vfs_ioctl+0xa8/0x7fc)
[  156.076798]  r9:d57da000 r8:beb598b0 r7:00000003 r6:ed8d5300 r5:d57e2828 r4:beb598b0
[  156.084573] [<c033eb00>] (do_vfs_ioctl) from [<c033f338>] (SyS_ioctl+0x3c/0x64)
[  156.091910]  r10:00000000 r9:d57da000 r8:beb598b0 r7:40405501 r6:ed8d5300 r5:00000003
[  156.099767]  r4:ed8d5300
[  156.102310] [<c033f2fc>] (SyS_ioctl) from [<c0207be0>] (ret_fast_syscall+0x0/0x34)
[  156.109908]  r9:d57da000 r8:c0207d84 r7:00000036 r6:00000000 r5:00000000 r4:beb59b58
[  156.117679] ---[ end trace 5b2a237e284b89ca ]---
1 wLength 001a
streaming request (req 83 cs 01)
bRequestType 2[  156.123626] uvc_video_complete - 552743
1 bRequest 01 wValue 0100 wIndex 0001 wLength 001a
streaming re[  156.131854] uvc_video_complete - 560971
[  156.141251] uvc_video_complete - 570369
quest (req 01 cs 01)
setting probe control, length = 26
bReque[  156.145106] uvc_video_complete - 574224
[  156.154531] uvc_video_complete - 583649
stType a1 bRequest 81 wValue 0100 wIndex 0001 wLength 001a
stre[  156.158400] uvc_video_complete - 587518
aming request (req 81 cs 01)
bRequestType 21 bRequest 01 wValue[  156.167809] uvc_video_complete - 596927
 0100 wIndex 0001 wLength 001a
streaming request (req 01 cs 01)[  156.177233] uvc_video_complete - 606351

setting probe control, length = 26
bRequestType a1 bRequest 8[  156.187246] uvc_video_complete - 616363
2 wValue 0100 wIndex 0001 wLength 001a
streaming request (req 8[  156.196099] uvc_video_complete - 625217
2 cs 01)
bRequestType a1 bRequest 83 wValue 0100 wIndex 0001 wL[  156.205509] uvc_video_complete - 634627
ength 001a
streaming request (req 83 cs 01)
bRequestType 21 bR[  156.214933] uvc_video_complete - 644051
equest 01 wValue 0100 wIndex 0001 wLength 001a
streaming reques[  156.224357] uvc_video_complete - 653475
t (req 01 cs 01)
setting probe control, length = 26
bRequestTy[  156.233800] uvc_video_complete - 662916
pe a1 bRequest 81 wValue 0100 wIndex 0001 wLength 001a
streamin[  156.243205] uvc_video_complete - 672322
g request (req 81 cs 01)
bRequestType 21 bRequest 01 wValue 010[  156.252629] uvc_video_complete - 681747
0 wIndex 0001 wLength 001a
streaming request (req 01 cs 01)
se[  156.262617] uvc_video_complete - 691735
tting probe control, length = 26
bRequestType a1 bRequest 82 wV[  156.271495] uvc_video_complete - 700612
alue 0100 wIndex 0001 wLength 001a
streaming request (req 82 cs[  156.280906] uvc_video_complete - 710024
 01)
bRequestType a1 bRequest 83 wValue 0100 wIndex 0001 wLengt[  156.290330] uvc_video_complete - 719448
h 001a
streaming request (req 83 cs 01)
bRequestType 21 bReque[  156.299755] uvc_video_complete - 728873
st 01 wValue 0100 wIndex 0001 wLength 001a
streaming request (r[  156.309191] uvc_video_complete - 738308
eq 01 cs 01)
setting probe control, length = 26
bRequestType a[  156.318600] uvc_video_complete - 747718
1 bRequest 81 wValue 0100 wIndex 0001 wLength 001a
streaming re[  156.328024] uvc_video_complete - 757142
quest (req 81 cs 01)
bRequestType 21 bRequest 01 wValue 0100 wI[  156.337992] uvc_video_complete - 767109
ndex 0001 wLength 001a
streaming request (req 01 cs 01)
settin[  156.346891] uvc_video_complete - 776009
g probe control, length = 26
bRequestType a1 bRequest 82 wValue[  156.356302] uvc_video_complete - 785420
 0100 wIndex 0001 wLength 001a
streaming request (req 82 cs 01)[  156.365726] uvc_video_complete - 794844

bRequestType a1 bRequest 83 wValue 0100 wIndex 0001 wLength 00[  156.375151] uvc_video_complete - 804269
1a
streaming request (req 83 cs 01)
bRequestType 21 bRequest 0[  156.384594] uvc_video_complete - 813711
1 wValue 0100 wIndex 0001 wLength 001a
streaming request (req 0[  156.393998] uvc_video_complete - 823116
1 cs 01)
setting probe control, length = 26
bRequestType a1 bR[  156.403422] uvc_video_complete - 832540
equest 81 wValue 0100 wIndex 0001 wLength 001a
streaming reques[  156.413496] uvc_video_complete - 842613
t (req 81 cs 01)
bRequestType 21 bRequest 01 wValue 0200 wIndex[  156.422314] uvc_video_complete - 851427
 0001 wLength 001a
streaming request (req 01 cs 02)
setting co[  156.431705] uvc_video_complete - 860823
mmit control, length = 26
Setting format to 0x56595559 1280x720[  156.441130] uvc_video_complete - 870247

4 buffers allocated.
length: 1843200 offset: 0
Buffer 0 mapp[  156.450555] uvc_video_complete - 879673
ed at address 0xb6b1c000.
length: 1843200 offset: 1843200
Buff[  156.460000] uvc_video_complete - 889118
er 1 mapped at address 0xb695a000.
length: 1843200 offset: 3686[  156.469405] uvc_video_complete - 898523
400
Buffer 2 mapped at address 0xb6798000.
length: 1843200 off[  156.478830] uvc_video_complete - 907948
set: 5529600
Buffer 3 mapped at address 0xb65d6000.
Starting v[  156.488867] uvc_video_complete - 917984
ideo stream.
Queueing buffer 0.
Queueing buffer 1.
Queueing b[  156.497704] uvc_video_complete - 926821
uffer 2.
Queueing buffer 3.
bRequestType a1 bRequest 87 wValue[  156.507111] uvc_video_complete - 936229
 0200 wIndex 0200 wLength 0002
control request (req 87 cs 02)
[  156.516536] uvc_video_complete - 945654
[  156.525962] uvc_video_complete - 955080
[  156.529838] uvc_video_complete - 958955
[  156.533690] uvc_video_complete - 962808
[  156.537541] uvc_video_complete - 966659
[  156.541993] uvc_video_complete - 971110
[  156.545861] uvc_video_complete - 974979
[  156.549715] uvc_video_complete - 978833
[  156.553568] uvc_video_complete - 982686
[  156.557422] uvc_video_complete - 986540
[  156.561297] uvc_video_complete - 990413
[  156.565152] uvc_video_complete - 994270
[  156.569001] uvc_video_complete - 998120
[  156.573491] uvc_video_complete - 002608
[  156.577362] uvc_video_complete - 006479
[  156.581217] uvc_video_complete - 010335
[  156.585072] uvc_video_complete - 014190
[  156.588924] uvc_video_complete - 018042
[  156.592806] uvc_video_complete - 021923
[  156.596659] uvc_video_complete - 025777
[  156.600510] uvc_video_complete - 029628
[  156.604991] uvc_video_complete - 034108
[  156.608860] uvc_video_complete - 037977
[  156.612714] uvc_video_complete - 041832
[  156.616567] uvc_video_complete - 045685
[  156.620421] uvc_video_complete - 049539
[  156.624294] uvc_video_complete - 053411
[  156.628150] uvc_video_complete - 057268
[  156.632000] uvc_video_complete - 061119
[  156.636488] uvc_video_complete - 065605
[  156.640370] uvc_video_complete - 069487
[  156.644225] uvc_video_complete - 073343
[  156.648078] uvc_video_complete - 077196
[  156.651931] uvc_video_complete - 081049
[  156.655800] uvc_video_complete - 084917
[  156.659655] uvc_video_complete - 088773
[  156.663505] uvc_video_complete - 092623
[  156.667990] uvc_video_complete - 097108
[  156.671859] uvc_video_complete - 100977
[  156.675719] uvc_video_complete - 104837
[  156.679572] uvc_video_complete - 108690
[  156.683424] uvc_video_complete - 112542
[  156.687290] uvc_video_complete - 116407
[  156.691147] uvc_video_complete - 120265
[  156.694998] uvc_video_complete - 124116
[  156.699492] uvc_video_complete - 128609
[  156.703360] uvc_video_complete - 132477
[  156.707214] uvc_video_complete - 136332
[  156.711067] uvc_video_complete - 140185
[  156.714920] uvc_video_complete - 144038
[  156.718785] uvc_video_complete - 147903
[  156.722641] uvc_video_complete - 151759
[  156.726491] uvc_video_complete - 155610
[  156.730988] uvc_video_complete - 160105
[  156.734854] uvc_video_complete - 163972
[  156.738709] uvc_video_complete - 167827
[  156.742562] uvc_video_complete - 171680
[  156.746414] uvc_video_complete - 175532
[  156.750284] uvc_video_complete - 179398
[  156.754141] uvc_video_complete - 183259
[  156.757992] uvc_video_complete - 187110
[  156.762488] uvc_video_complete - 191605
[  156.766357] uvc_video_complete - 195474
[  156.770211] uvc_video_complete - 199329
[  156.774064] uvc_video_complete - 203182
[  156.777916] uvc_video_complete - 207034
[  156.781782] uvc_video_complete - 210899
[  156.785636] uvc_video_complete - 214754
[  156.789487] uvc_video_complete - 218605
[  156.793988] uvc_video_complete - 223105
[  156.797855] uvc_video_complete - 226973
[  156.801709] uvc_video_complete - 230827
[  156.805562] uvc_video_complete - 234680
[  156.809415] uvc_video_complete - 238533
[  156.813284] uvc_video_complete - 242400
[  156.817139] uvc_video_complete - 246257
[  156.820989] uvc_video_complete - 250107
[  156.825490] uvc_video_complete - 254607
[  156.829359] uvc_video_complete - 258476
[  156.833213] uvc_video_complete - 262331
[  156.837065] uvc_video_complete - 266183
[  156.840918] uvc_video_complete - 270036
[  156.844787] uvc_video_complete - 273903
[  156.848641] uvc_video_complete - 277759
[  156.852492] uvc_video_complete - 281610
[  156.856988] uvc_video_complete - 286105
[  156.860858] uvc_video_complete - 289975
[  156.864717] uvc_video_complete - 293835
[  156.868570] uvc_video_complete - 297688
[  156.872424] uvc_video_complete - 301542
[  156.876291] uvc_video_complete - 305408
[  156.880148] uvc_video_complete - 309266
[  156.883998] uvc_video_complete - 313116
[  156.888494] uvc_video_complete - 317611
[  156.892373] uvc_video_complete - 321490
[  156.896229] uvc_video_complete - 325346
[  156.900082] uvc_video_complete - 329200
[  156.903935] uvc_video_complete - 333053
[  156.907806] uvc_video_complete - 336921
[  156.911662] uvc_video_complete - 340780
[  156.915512] uvc_video_complete - 344630
[  156.919989] uvc_video_complete - 349106
[  156.923858] uvc_video_complete - 352976
[  156.927713] uvc_video_complete - 356830
[  156.931566] uvc_video_complete - 360684
[  156.935419] uvc_video_complete - 364537
[  156.939288] uvc_video_complete - 368405
[  156.943142] uvc_video_complete - 372260
[  156.946993] uvc_video_complete - 376111
[  156.951488] uvc_video_complete - 380605
[  156.955356] uvc_video_complete - 384474
[  156.959210] uvc_video_complete - 388328
[  156.963064] uvc_video_complete - 392182
[  156.966916] uvc_video_complete - 396035
[  156.970793] uvc_video_complete - 399909
[  156.974649] uvc_video_complete - 403767
[  156.978499] uvc_video_complete - 407617
[  156.982986] uvc_video_complete - 412103
[  156.986853] uvc_video_complete - 415971
[  156.990707] uvc_video_complete - 419825
[  156.994559] uvc_video_complete - 423677
[  156.998411] uvc_video_complete - 427529
[  157.002288] uvc_video_complete - 431404
[  157.006142] uvc_video_complete - 435260
[  157.009993] uvc_video_complete - 439110
[  157.014488] uvc_video_complete - 443605
[  157.018355] uvc_video_complete - 447473
[  157.022210] uvc_video_complete - 451328
[  157.026064] uvc_video_complete - 455181
[  157.029917] uvc_video_complete - 459036
[  157.033791] uvc_video_complete - 462909
[  157.037646] uvc_video_complete - 466764
[  157.041497] uvc_video_complete - 470615
[  157.045995] uvc_video_complete - 475110
[  157.049878] uvc_video_complete - 478994
[  157.053738] uvc_video_complete - 482855
[  157.057592] uvc_video_complete - 486710
[  157.061446] uvc_video_complete - 490563
[  157.065316] uvc_video_complete - 494430
[  157.069171] uvc_video_complete - 498289
[  157.073022] uvc_video_complete - 502140
[  157.077486] uvc_video_complete - 506603
[  157.081366] uvc_video_complete - 510483
[  157.085222] uvc_video_complete - 514340
[  157.089076] uvc_video_complete - 518194
[  157.092930] uvc_video_complete - 522048
[  157.096797] uvc_video_complete - 525915
[  157.100654] uvc_video_complete - 529772
[  157.104505] uvc_video_complete - 533623
[  157.108987] uvc_video_complete - 538104
[  157.112860] uvc_video_complete - 541978
[  157.116718] uvc_video_complete - 545836
[  157.120571] uvc_video_complete - 549690
[  157.124424] uvc_video_complete - 553542
[  157.128289] uvc_video_complete - 557407
[  157.132146] uvc_video_complete - 561264
[  157.135996] uvc_video_complete - 565114
[  157.140492] uvc_video_complete - 569608
[  157.144361] uvc_video_complete - 573479
[  157.148215] uvc_video_complete - 577333
[  157.152069] uvc_video_complete - 581187
[  157.155922] uvc_video_complete - 585040
[  157.159791] uvc_video_complete - 588908
[  157.163646] uvc_video_complete - 592764
[  157.167496] uvc_video_complete - 596614
[  157.171985] uvc_video_complete - 601103
[  157.175851] uvc_video_complete - 604969
[  157.179706] uvc_video_complete - 608824
[  157.183559] uvc_video_complete - 612677
[  157.187412] uvc_video_complete - 616531
[  157.191281] uvc_video_complete - 620398
[  157.195136] uvc_video_complete - 624254
[  157.198986] uvc_video_complete - 628104
[  157.203486] uvc_video_complete - 632604
[  157.207354] uvc_video_complete - 636472
[  157.211207] uvc_video_complete - 640325
[  157.215060] uvc_video_complete - 644179
[  157.218913] uvc_video_complete - 648031
[  157.222783] uvc_video_complete - 651899
[  157.226638] uvc_video_complete - 655755
[  157.230488] uvc_video_complete - 659606
[  157.234985] uvc_video_complete - 664103
[  157.238853] uvc_video_complete - 667970
[  157.242707] uvc_video_complete - 671825
[  157.246559] uvc_video_complete - 675677
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[  160.554041] uvc_video_complete - 983159
[  160.557894] uvc_video_complete - 987012
[  160.561761] uvc_video_complete - 990878
[  160.565618] uvc_video_complete - 994736
[  160.569469] uvc_video_complete - 998587
[  160.573967] uvc_video_complete - 003085
[  160.577835] uvc_video_complete - 006952
[  160.581690] uvc_video_complete - 010808
[  160.585542] uvc_video_complete - 014660
[  160.589395] uvc_video_complete - 018513
[  160.593266] uvc_video_complete - 022380
[  160.597120] uvc_video_complete - 026238
[  160.600971] uvc_video_complete - 030089
[  160.605467] uvc_video_complete - 034584
[  160.609336] uvc_video_complete - 038453
[  160.613189] uvc_video_complete - 042307
[  160.617042] uvc_video_complete - 046160
[  160.620894] uvc_video_complete - 050012
[  160.624766] uvc_video_complete - 053881
[  160.628622] uvc_video_complete - 057739
[  160.632472] uvc_video_complete - 061591
[  160.636966] uvc_video_complete - 066084
[  160.640838] uvc_video_complete - 069956
[  160.644697] uvc_video_complete - 073815
[  160.648550] uvc_video_complete - 077668
[  160.652403] uvc_video_complete - 081521
[  160.656268] uvc_video_complete - 085386
[  160.660124] uvc_video_complete - 089242
[  160.663974] uvc_video_complete - 093092
[  160.668466] uvc_video_complete - 097584
[  160.672336] uvc_video_complete - 101453
[  160.676196] uvc_video_complete - 105313
[  160.680049] uvc_video_complete - 109167
[  160.683901] uvc_video_complete - 113019
[  160.687766] uvc_video_complete - 116884
[  160.691621] uvc_video_complete - 120738
[  160.695470] uvc_video_complete - 124588
[  160.699966] uvc_video_complete - 129084
[  160.703834] uvc_video_complete - 132952
[  160.707687] uvc_video_complete - 136805
[  160.711540] uvc_video_complete - 140658
[  160.715393] uvc_video_complete - 144511
[  160.719267] uvc_video_complete - 148384
[  160.723123] uvc_video_complete - 152241
[  160.726974] uvc_video_complete - 156092
[  160.731467] uvc_video_complete - 160584
[  160.735334] uvc_video_complete - 164452
[  160.739188] uvc_video_complete - 168306
[  160.743040] uvc_video_complete - 172158
[  160.746893] uvc_video_complete - 176011
[  160.750762] uvc_video_complete - 179880
[  160.754617] uvc_video_complete - 183735
[  160.758469] uvc_video_complete - 187587
[  160.762966] uvc_video_complete - 192083
[  160.766831] uvc_video_complete - 195949
[  160.770685] uvc_video_complete - 199803
[  160.774539] uvc_video_complete - 203657
[  160.778392] uvc_video_complete - 207510
[  160.782261] uvc_video_complete - 211377
[  160.786116] uvc_video_complete - 215234
[  160.789967] uvc_video_complete - 219085
[  160.794467] uvc_video_complete - 223584
[  160.798333] uvc_video_complete - 227451
[  160.802188] uvc_video_complete - 231306
[  160.806041] uvc_video_complete - 235159
[  160.809893] uvc_video_complete - 239011
[  160.813767] uvc_video_complete - 242883
[  160.817622] uvc_video_complete - 246740
[  160.821472] uvc_video_complete - 250590
[  160.825967] uvc_video_complete - 255084
[  160.829841] uvc_video_complete - 258957
[  160.833699] uvc_video_complete - 262817
[  160.837553] uvc_video_complete - 266670
[  160.841405] uvc_video_complete - 270523
[  160.845271] uvc_video_complete - 274389
[  160.849128] uvc_video_complete - 278245
[  160.852979] uvc_video_complete - 282097
[  160.857468] uvc_video_complete - 286585
[  160.861344] uvc_video_complete - 290461
[  160.865202] uvc_video_complete - 294320
[  160.869056] uvc_video_complete - 298174
[  160.872910] uvc_video_complete - 302028
[  160.876775] uvc_video_complete - 305893
[  160.880632] uvc_video_complete - 309750
[  160.884482] uvc_video_complete - 313600
[  160.888966] uvc_video_complete - 318084
[  160.892840] uvc_video_complete - 321956
[  160.896697] uvc_video_complete - 325815
[  160.900550] uvc_video_complete - 329668
[  160.904403] uvc_video_complete - 333521
[  160.908269] uvc_video_complete - 337387
[  160.912126] uvc_video_complete - 341244
[  160.915976] uvc_video_complete - 345094
[  160.920467] uvc_video_complete - 349584
[  160.924333] uvc_video_complete - 353451
[  160.928187] uvc_video_complete - 357305
[  160.932041] uvc_video_complete - 361159
[  160.935894] uvc_video_complete - 365012
[  160.939762] uvc_video_complete - 368879
[  160.943617] uvc_video_complete - 372735
[  160.947468] uvc_video_complete - 376586
[  160.951965] uvc_video_complete - 381083
[  160.955832] uvc_video_complete - 384949
[  160.959685] uvc_video_complete - 388803
[  160.963538] uvc_video_complete - 392656
[  160.967391] uvc_video_complete - 396509
[  160.971261] uvc_video_complete - 400377
[  160.975116] uvc_video_complete - 404234
[  160.978967] uvc_video_complete - 408085
[  160.983465] uvc_video_complete - 412583
[  160.987331] uvc_video_complete - 416449
[  160.991186] uvc_video_complete - 420304
[  160.995039] uvc_video_complete - 424157
[  160.998893] uvc_video_complete - 428011
[  161.002762] uvc_video_complete - 431878
[  161.006617] uvc_video_complete - 435735
[  161.010467] uvc_video_complete - 439585
[  161.014965] uvc_video_complete - 444082
[  161.018831] uvc_video_complete - 447949
[  161.022686] uvc_video_complete - 451804
[  161.026539] uvc_video_complete - 455657
[  161.030393] uvc_video_complete - 459511
[  161.034261] uvc_video_complete - 463378
[  161.038117] uvc_video_complete - 467235
[  161.041967] uvc_video_complete - 471085
[  161.046465] uvc_video_complete - 475582
[  161.050339] uvc_video_complete - 479455
[  161.054197] uvc_video_complete - 483315
[  161.058051] uvc_video_complete - 487169
[  161.061905] uvc_video_complete - 491023
[  161.065772] uvc_video_complete - 494889
[  161.069628] uvc_video_complete - 498746
[  161.073478] uvc_video_complete - 502596
[  161.077964] uvc_video_complete - 507082
[  161.081837] uvc_video_complete - 510955
[  161.085694] uvc_video_complete - 514812
[  161.089547] uvc_video_complete - 518666
[  161.093400] uvc_video_complete - 522518
[  161.097265] uvc_video_complete - 526383
[  161.101121] uvc_video_complete - 530239
[  161.104971] uvc_video_complete - 534089
[  161.109465] uvc_video_complete - 538582
[  161.113341] uvc_video_complete - 542456
[  161.117198] uvc_video_complete - 546316
[  161.121051] uvc_video_complete - 550169
[  161.124904] uvc_video_complete - 554022
[  161.128777] uvc_video_complete - 557895
[  161.132632] uvc_video_complete - 561750
[  161.136483] uvc_video_complete - 565601
[  161.140965] uvc_video_complete - 570083
[  161.144832] uvc_video_complete - 573950
[  161.148687] uvc_video_complete - 577805
[  161.152540] uvc_video_complete - 581658
[  161.156394] uvc_video_complete - 585512
[  161.160265] uvc_video_complete - 589383
[  161.164119] uvc_video_complete - 593237
[  161.167970] uvc_video_complete - 597088
[  161.172465] uvc_video_complete - 601583
[  161.176330] uvc_video_complete - 605448
[  161.180184] uvc_video_complete - 609302
[  161.184037] uvc_video_complete - 613155
[  161.187889] uvc_video_complete - 617007
[  161.191758] uvc_video_complete - 620875
[  161.195613] uvc_video_complete - 624731
[  161.199463] uvc_video_complete - 628581
[  161.203966] uvc_video_complete - 633083
[  161.207839] uvc_video_complete - 636956
[  161.211692] uvc_video_complete - 640810
[  161.215545] uvc_video_complete - 644663
[  161.219397] uvc_video_complete - 648515
[  161.223267] uvc_video_complete - 652383
[  161.227121] uvc_video_complete - 656239
[  161.230971] uvc_video_complete - 660089
[  161.235464] uvc_video_complete - 664581
[  161.239330] uvc_video_complete - 668448
[  161.243184] uvc_video_complete - 672302
[  161.247036] uvc_video_complete - 676154
[  161.250889] uvc_video_complete - 680007
[  161.254755] uvc_video_complete - 683872
[  161.258609] uvc_video_complete - 687727
[  161.262459] uvc_video_complete - 691577
[  161.266965] uvc_video_complete - 696082
[  161.270837] uvc_video_complete - 699955
[  161.274695] uvc_video_complete - 703813
[  161.278548] uvc_video_complete - 707666
[  161.282400] uvc_video_complete - 711518
[  161.286267] uvc_video_complete - 715384
[  161.290121] uvc_video_complete - 719240
[  161.293972] uvc_video_complete - 723090
[  161.298464] uvc_video_complete - 727581
[  161.302334] uvc_video_complete - 731452
[  161.306192] uvc_video_complete - 735310
[  161.310045] uvc_video_complete - 739163
[  161.313898] uvc_video_complete - 743017
[  161.317767] uvc_video_complete - 746883
[  161.321623] uvc_video_complete - 750741
[  161.325473] uvc_video_complete - 754591
[  161.329972] uvc_video_complete - 759089
[  161.333840] uvc_video_complete - 762958
[  161.337694] uvc_video_complete - 766812
[  161.341548] uvc_video_complete - 770666
[  161.345401] uvc_video_complete - 774519
[  161.349266] uvc_video_complete - 778384
[  161.353123] uvc_video_complete - 782241
[  161.356973] uvc_video_complete - 786091
[  161.361465] uvc_video_complete - 790582
[  161.365334] uvc_video_complete - 794451
[  161.369187] uvc_video_complete - 798306
[  161.373041] uvc_video_complete - 802159
[  161.376895] uvc_video_complete - 806013
[  161.380768] uvc_video_complete - 809884
[  161.384622] uvc_video_complete - 813740
[  161.388472] uvc_video_complete - 817590
[  161.392963] uvc_video_complete - 822080
[  161.396829] uvc_video_complete - 825947
[  161.400682] uvc_video_complete - 829800
[  161.404535] uvc_video_complete - 833653
[  161.408388] uvc_video_complete - 837506
[  161.412259] uvc_video_complete - 841375
[  161.416113] uvc_video_complete - 845232
[  161.419964] uvc_video_complete - 849083
[  161.424462] uvc_video_complete - 853579
[  161.428331] uvc_video_complete - 857448
[  161.432185] uvc_video_complete - 861302
[  161.436038] uvc_video_complete - 865156
[  161.439891] uvc_video_complete - 869009
[  161.443767] uvc_video_complete - 872883
[  161.447620] uvc_video_complete - 876738

    2. Video and HID in parallel
    Another issue is when Video and HID composite are running in parallel.
    We have a custom composite gadget driver; when the video packet is submitted to DWC3 and in parallel HID packet is submitted, then the video IN endpoint is blocked (it is not triggering the completion callback function). But HID can continue queuing data to its endpoint.
    Unforutunately there is no sample code that can be provided.
    Doing a video stream restart from host PC (streaming PC), the error recovers and video completion handler starts working. (but further HID events disrupt the video completion handler)
    Is there any sample code from TI to check Video, HID in parallel ?  

    Let me know if some additional details required.

  • 0 in reply to Monica chandrasekaran
    TI__Guru**** 169391 points
    Monica,

    I am about leaving the office for the holidays, and don't have much time to replicate the exact use case you have based on the patches you provided, but I do see you use "printk()" in the uvc completion handler to print the timestamp, which is not a correct way to measure runtime performance, because typically printk outputs the log messages directly onto the UART console which is very slow, it will cause inaccurate measurement.

    I did a quick experiment to prove my statement:

    In the same place as in your patch 0002, I use trace_printk() (you would need to enable ftrace in kernel config for it), the logs show the handler is called in about ~120us interval. Then I changed it to dev_err(), which is a wrapper of printk(), now the logs directly go to UART console, and the handler is called in about ~4ms, which matches what you observed.

    You probably would ask why another platform gives ~800us performance with printk(), I think that likely depends how each UART driver is implemented or configured, but that is irrelevant, printk() shouldn't be used in this measurement anyway.

    Regarding issue #2 you reported, do you have any log for Video only and Video+HID to show how the video IN EP is blocked?

    I will be back in office in about 3 weeks to continue this discussion. Thanks.
  • 0 in reply to Bin Liu
    Prodigy 30 points

    Bin,

    Attaching logs taken from UDC(drivers/usb/gadget/udc/core.c) for issue #2,

    Fullscreen tilogs_video_working_without_hid.txt Download 
       86.624350] 
[   86.624350] 
[   86.633932] Handling Audio control ep
[   86.637743] audio_function_setup() req=83 reqtype=a1 v=0200 i=0602 l=2
[   86.637743] 
[   86.637743] 
[   86.647324] Handling Audio control ep
[   86.651219] audio_function_setup() req=84 reqtype=a1 v=0200 i=0602 l=2
[   86.651219] 
[   86.651219] 
[   86.660788] Handling Audio control ep
[   86.664662] audio_function_setup() req=81 reqtype=a1 v=0700 i=0602 l=1
[   86.664662] 
[   86.664662] 
[   86.674229] Handling Audio control ep
[   86.678132] audio_function_set_alt() intf 3, alt 0
[   86.682949] (3,0) event sent
[   86.685843] flushed skb and ep-req queue
[   86.690177] audio_function_set_alt() intf 4, alt 0
[   86.694996] (4,0) event sent
[   86.697889] flushed skb and ep-req queue
[   86.787679] audio_function_setup() req=01 reqtype=21 v=0100 i=0202 l=1
[   86.787679] 
[   86.787679] 
[   86.797284] Handling Audio control ep
[   86.824532] audio_function_setup() req=01 reqtype=21 v=0200 i=0202 l=2
[   86.824532] 
[   86.824532] 
[   86.834129] Handling Audio control ep
[   86.872805] audio_function_setup() req=01 reqtype=21 v=0200 i=0602 l=2
[   86.872805] 
[   86.872805] 
[   86.882379] Handling Audio control ep
[   91.853551] random: crng init done
[  102.703941] uvc_function_set_alt(1, 11)
[  102.707812] Maxpacket size = 400

root@am57xx-evm:~# cat /sys/kernel/debug/tracing/trace
# tracer: nop
#
# entries-in-buffer/entries-written: 7552/7552   #P:2
#
#                              _-----=> irqs-off
#                             / _----=> need-resched
#                            | / _---=> hardirq/softirq
#                            || / _--=> preempt-depth
#                            ||| /     delay
#           TASK-PID   CPU#  ||||    TIMESTAMP  FUNCTION
#              | |       |   ||||       |         |
    irq/476-dwc3-920   [001] d...   102.989839: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.989957: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.990083: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.990207: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.990332: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.990456: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.990581: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.990707: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.990831: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.990957: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.991082: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.991207: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.991331: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.991450: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.991581: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.991706: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.991832: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.991956: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.992081: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.992206: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.992331: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.992455: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.992580: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.992706: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.992834: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.992958: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.993082: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.993207: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.993332: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.993458: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.993566: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   102.993684: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.013704: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.013828: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.013953: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.014079: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.014203: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.014327: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.014453: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.014578: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.014703: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.014827: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.014947: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.015076: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.015202: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.015327: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.015453: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.015577: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.015703: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.015828: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.015953: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.016078: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.016203: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.016328: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.016453: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.016578: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.016702: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.016828: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.016953: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.017071: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.017202: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.017327: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.017434: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.017554: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.046954: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.047079: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.047203: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.047328: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.047452: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.047578: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.047703: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.047828: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.047953: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.048078: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.048202: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.048328: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.048453: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.048578: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.048702: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.048828: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.048952: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.049077: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.049202: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.049328: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.049457: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.049583: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.049707: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.049833: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.049957: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.050075: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.050208: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.050331: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.050455: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.050580: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.050688: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.050807: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.080204: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.080328: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.080453: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.080577: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.080703: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.080827: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.080953: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.081077: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.081202: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.081328: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.081459: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.081579: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.081702: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.081830: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.081956: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.082079: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.082206: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.082328: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.082453: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.082572: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.082702: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.082828: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.082952: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.083077: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.083202: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.083326: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.083453: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.083578: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.083702: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.083826: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.083934: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.084053: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.113453: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.113577: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.113702: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.113827: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.113946: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.114077: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.114202: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.114327: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.114452: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.114577: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.114702: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.114827: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.114952: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.115077: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.115201: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.115327: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.115451: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.115577: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.115702: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.115829: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.115952: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.116077: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.116202: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.116327: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.116452: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.116579: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.116706: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.116826: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.116950: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.117076: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.117185: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.117303: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.146835: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.146959: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.147084: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.147208: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.147333: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.147460: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.147585: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.147708: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.147833: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.147958: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.148084: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.148209: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.148333: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.148458: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.148583: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.148708: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.148834: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.148958: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.149083: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.149208: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.149334: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.149460: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.149584: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.149709: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.149833: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.149960: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.150084: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.150208: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.150331: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.150457: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.150565: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.150684: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.180209: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.180333: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.180459: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.180583: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.180708: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.180833: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.180958: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.181081: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.181208: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.181327: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.181457: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.181587: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.181708: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.181834: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.181957: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.182082: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.182208: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.182333: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.182459: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.182583: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.182709: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.182833: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.182958: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.183083: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.183209: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.183338: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.183458: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.183582: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.183706: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.183830: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.183939: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.184056: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.213459: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.213583: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.213708: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.213833: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.213958: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.214083: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.214208: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.214333: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.214458: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.214583: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.214708: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.214834: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.214957: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.215083: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.215208: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.215332: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.215458: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.215583: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.215708: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.215833: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.215958: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.216084: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.216209: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.216333: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.216458: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.216584: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.216707: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.216832: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.216956: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.217080: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.217189: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.217309: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.246708: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.246834: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.246958: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.247083: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.247207: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.247332: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.247458: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.247583: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.247708: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.247833: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.247958: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.248083: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.248208: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.248333: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.248457: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.248583: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.248708: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.248833: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.248958: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.249083: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.249208: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.249333: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.249459: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.249583: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.249707: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.249833: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.249960: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.250082: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.250205: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.250330: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.250439: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.250559: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.280084: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.280208: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.280333: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.280457: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.280583: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.280708: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.280834: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.280957: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.281083: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.281208: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.281332: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.281458: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.281583: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.281708: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.281833: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.281957: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.282082: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.282208: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.282333: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.282457: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.282583: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.282708: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.282833: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.282958: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.283082: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.283209: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.283333: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.283457: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.283582: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.283705: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.283814: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.283933: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.313333: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.313458: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.313583: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.313708: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.313837: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.313958: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.314083: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.314207: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.314332: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.314458: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.314582: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.314707: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.314833: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.314957: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.315083: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.315208: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.315333: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.315457: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.315583: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.315707: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.315833: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.315958: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.316083: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.316207: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.316333: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.316457: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.316587: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.316707: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.316830: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.316955: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.317064: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.317182: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.346707: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.346833: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.346958: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.347082: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.347207: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.347332: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.347457: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.347582: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.347707: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.347832: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.347957: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.348081: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.348208: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.348333: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.348457: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.348582: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.348707: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.348833: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.348957: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.349082: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.349207: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.349332: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.349459: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.349584: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.349707: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.349835: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.349956: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.350081: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.350205: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.350330: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.350439: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.350566: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.379959: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.380085: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.380209: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.380334: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.380458: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.380583: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.380708: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.380834: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.380960: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.381085: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.381210: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.381333: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.381459: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.381585: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.381708: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.381834: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.381958: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.382085: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.382209: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.382334: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.382459: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.382584: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.382709: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.382836: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.382958: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.383084: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.383207: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.383332: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.383455: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.383580: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.383689: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.383807: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.413332: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.413457: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.413582: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.413707: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.413832: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.413957: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.414083: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.414208: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.414333: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.414457: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.414582: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.414707: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.414832: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.414957: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.415082: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.415207: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.415332: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.415456: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.415583: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.415707: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.415832: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.415957: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.416082: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.416207: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.416332: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.416459: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.416580: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.416706: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.416829: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.416955: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.417063: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.417182: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.446708: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.446832: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.446956: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.447082: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.447208: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.447333: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.447457: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.447581: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.447706: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.447832: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.447957: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.448080: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.448207: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.448333: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.448457: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.448582: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.448707: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.448832: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.448957: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.449083: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.449207: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.449332: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.449457: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.449582: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.449708: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.449831: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.449957: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.450080: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.450205: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.450329: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.450438: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.450558: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.479951: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.480076: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.480202: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.480326: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.480450: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.480575: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.480700: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.480826: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.480950: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.481076: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.481201: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.481326: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.481450: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.481577: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.481701: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.481825: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.481951: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.482075: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.482200: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.482325: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.482450: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.482576: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.482701: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.482825: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.482951: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.483078: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.483200: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.483327: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.483449: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.483574: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.483683: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.483801: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.513208: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.513331: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.513457: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.513582: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.513706: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.513832: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.513956: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.514080: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.514200: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.514331: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.514456: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.514582: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.514706: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.514832: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.514957: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.515081: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.515207: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.515331: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.515457: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.515582: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.515706: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.515831: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.515957: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.516080: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.516207: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.516334: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.516455: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.516581: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.516705: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.516829: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.516938: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.517057: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.551206: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.551332: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.551455: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.551581: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.551706: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.551831: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.551955: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.552081: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.552206: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.552331: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.552455: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.552580: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.552705: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.552830: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.552955: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.553079: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.553205: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.553331: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.553456: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.553581: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.553705: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.553831: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.553956: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.554081: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.554205: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.554330: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.554456: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.554580: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.554703: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.554828: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.554937: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.555056: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.579832: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.579956: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.580081: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.580206: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.580330: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.580457: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.580581: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.580708: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.580832: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.580956: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.581082: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.581206: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.581332: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.581456: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.581581: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.581707: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.581831: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.581957: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.582081: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.582207: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.582332: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.582458: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.582582: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.582707: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.582832: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.582954: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.583084: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.583204: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.583329: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.583453: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.583562: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.583681: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.613207: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.613326: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.613456: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.613588: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.613706: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.613831: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.613956: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.614081: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.614205: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.614331: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.614456: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.614581: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.614706: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.614831: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.614960: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.615081: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.615206: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.615331: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.615457: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.615581: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.615706: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.615831: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.615956: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.616081: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.616206: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.616331: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.616455: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.616580: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.616704: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.616829: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.616937: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.617056: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.646459: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.646583: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.646709: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.646833: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.646958: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.647082: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.647208: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.647333: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.647458: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.647582: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.647707: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.647833: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.647958: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.648083: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.648208: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.648333: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.648458: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.648582: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.648710: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.648833: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.648959: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.649082: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.649207: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.649334: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.649461: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-920   [001] d...   103.649580: usb_gadget_giveback_request: ISOC_UDC

    Fullscreen tilogs_video_hid_not_working.txt Download 
    # entries-in-buffer/entries-written: 46/46   #P:2
#
#                              _-----=> irqs-off
#                             / _----=> need-resched
#                            | / _---=> hardirq/softirq
#                            || / _--=> preempt-depth
#                            ||| /     delay
#           TASK-PID   CPU#  ||||    TIMESTAMP  FUNCTION
#              | |       |   ||||       |         |
 dll_rx_thread_d-923   [000] ....   102.141151: usb_ep_queue: INT_UDC
    irq/476-dwc3-929   [001] d...   102.141286: usb_gadget_giveback_request: INT_UDC
 dll_rx_thread_d-923   [000] ....   102.143140: usb_ep_queue: INT_UDC
    irq/476-dwc3-929   [001] d...   102.143286: usb_gadget_giveback_request: INT_UDC
 dll_rx_thread_d-923   [000] ....   102.145138: usb_ep_queue: INT_UDC
    irq/476-dwc3-929   [001] d...   102.145285: usb_gadget_giveback_request: INT_UDC
 dll_rx_thread_d-923   [000] ....   102.147157: usb_ep_queue: INT_UDC
 dll_rx_thread_d-923   [000] ....   102.149152: usb_ep_queue: INT_UDC
 dll_rx_thread_d-923   [000] ....   102.151142: usb_ep_queue: INT_UDC
 dll_rx_thread_d-923   [000] ....   102.153140: usb_ep_queue: INT_UDC
 dll_rx_thread_d-923   [000] ....   102.155141: usb_ep_queue: INT_UDC
    irq/476-dwc3-929   [001] d...   102.156711: usb_gadget_giveback_request: INT_UDC
    irq/476-dwc3-929   [001] d...   102.156722: usb_gadget_giveback_request: INT_UDC
    irq/476-dwc3-929   [001] d...   102.156729: usb_gadget_giveback_request: INT_UDC
    irq/476-dwc3-929   [001] d...   102.156740: usb_gadget_giveback_request: INT_UDC
    irq/476-dwc3-929   [001] d...   102.156750: usb_gadget_giveback_request: INT_UDC
 dll_rx_thread_d-923   [000] ....   102.160587: usb_ep_queue: INT_UDC
 dll_rx_thread_d-923   [000] ....   102.160610: usb_ep_queue: INT_UDC
    irq/476-dwc3-929   [001] d...   102.160799: usb_gadget_giveback_request: INT_UDC
    irq/476-dwc3-929   [001] d...   102.161034: usb_gadget_giveback_request: INT_UDC
    irq/476-dwc3-929   [001] d...   102.176053: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-929   [001] d...   102.176175: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-929   [001] d...   102.176298: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-929   [001] d...   102.176421: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-929   [001] d...   102.176549: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-929   [001] d...   102.176673: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-929   [001] d...   102.176798: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-929   [001] d...   102.176923: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-929   [001] d...   102.177049: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-929   [001] d...   102.177173: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-929   [001] d...   102.177298: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-929   [001] d...   102.177423: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-929   [001] d...   102.177547: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-929   [001] d...   102.177671: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-929   [001] d...   102.187282: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-929   [001] d...   102.187288: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-929   [001] d...   102.187293: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-929   [001] d...   102.187297: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-929   [001] d...   102.187302: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-929   [001] d...   102.187307: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-929   [001] d...   102.187312: usb_gadget_giveback_request: ISOC_UDC
    irq/476-dwc3-929   [001] d...   102.187317: usb_gadget_giveback_request: ISOC_UDC
 dll_rx_thread_d-923   [000] ....   102.219146: usb_ep_queue: INT_UDC
 dll_rx_thread_d-923   [000] ....   102.221133: usb_ep_queue: INT_UDC
    irq/476-dwc3-929   [001] d...   102.222611: usb_gadget_giveback_request: INT_UDC
    irq/476-dwc3-929   [001] d...   102.222621: usb_gadget_giveback_request: INT_UDC
root@am57xx-evm:~# cat /sys/kernel/debug/tracing/trace

    mem-crash.txt

    Observations from the above logs are,

    1. "usb_gadget_giveback_request: ISOC_UDC" (debug message added for isochronous ep) is called when video is streaming without HID events. (Refer tilogs_video_working_without_hid.txt)

    2.  After queuing few HID events "usb_gadget_giveback_request: INT_UDC" (debug message added for interrupt ep), we see "usb_gadget_giveback_request: ISOC_UDC" is not getting called for video requests. (Refer tilogs_video_hid_not_working.txt)

    3. After isochronous ep blocked, video packets are piled up in queue waiting USB request buffer leads to memory crash. (Refer mem-crash.txt)

    Note: We have request buffer queue of size 1024 only for video.

  • 0 in reply to Monica chandrasekaran
    TI__Guru**** 169391 points
    Monica,

    I am still working on creating your usecase using usb configfs to create a composite gadget which has HID and UVC.

    The HID gadget cause kernel crashes because of NULL pointer deference, then I moved to the latest mainline kernel (v4.15-rc6), which doesn't have this crash problem. It would took me a while to figure out which kernel patch solve it, so I will stick to the community kernel for now to see if I can reproduce your observation.

    Meanwhile, is it possible for you to test the v4.15-rc6 as well?
  • 0 in reply to Bin Liu
    TI__Guru**** 169391 points
    BTY, I didn't apply any of your patches in 2664.NV12_Support.tar you provided above.
  • 0 in reply to Bin Liu
    TI__Guru**** 169391 points

    Monica,

    I finally got the test case up and running on kernel v4.15-rc6 - using usb config gadgetfs to create a usb composite gadget which has UVC and HID functions. The HID function is a keyboard which feeds keystrokes in 1ms interval. I noticed in your log that your HID uses 2ms interval.

    But I don't see the problem that the HID packet events block the UVC transfers, I also don't see any frame rate drop in the UVC video streaming either (I assume this is the problem you are trying to solve).

    Here is the portion of the ftrace log.

    am57x-uvc-hid-gadget.log

  • 0 in reply to Bin Liu
    TI__Guru**** 169391 points
    I just tested the same on community kernel v4.14.13, and didn't see the blocking issue either.
  • 0 in reply to Bin Liu
    Prodigy 30 points

    Bin,

    As per your comments on printk, we replaced trace_printk() and measured the latency. Latency data measured is similar to what you measured.

    Also we observed that we had a print in one of the gadget module, we replaced and we don't find the hang issue in this scenario now.

    I believe that printk was expensive and causing the issue. We will further testing and report if we find similar issue.

    Thank you for your support.

  • 0 in reply to Monica chandrasekaran
    TI__Guru**** 169391 points
    Monica,

    Thanks for the update, and I am glad the issue is solved.
    I will close this thread. Please open new posts when you have new issues.