We are trying to configure USB ports in DM8168 host and device modes.
With reference to "http://processors.wiki.ti.com/index.php/Usbgeneralpage", we did Linux kernel configuration and
inserted the driver by giving command "insmod g_file_storage.ko file=/dev/mmcblk0p3 stall=0" and connected to linux pc it is getting mounted.But it is not mounting in all linux pcs. In some linux pc, some ports it is showing error.
$ insmod g_file_storage.ko file=/dev/mmcblk0p3 stall=0
g_file_storage gadget: No serial-number string provided!
g_file_storage gadget: File-backed Storage Gadget, version: 1 September 2010
g_file_storage gadget: Number of LUNs=1
g_file_storage gadget-lun0: ro=0, nofua=0, file: /dev/mmcblk0p3
**************************dmesg log on host PC when its get mounted***************************
[ 4949.330670] usb 2-3: new high speed USB device using ehci_hcd and address 8
[ 4949.484843] usb 2-3: configuration #1 chosen from 1 choice
[ 4949.489779] scsi11 : SCSI emulation for USB Mass Storage devices
[ 4949.490667] usb-storage: device found at 8
[ 4949.490673] usb-storage: waiting for device to settle before scanning
[ 4954.490649] usb-storage: device scan complete
[ 4954.491828] scsi 11:0:0:0: Direct-Access Linux File-Stor Gadget 0316 PQ: 0 ANSI: 2
[ 4954.494547] sd 11:0:0:0: Attached scsi generic sg2 type 0
[ 4954.496746] sd 11:0:0:0: [sdb] 3405780 512-byte logical blocks: (1.74 GB/1.62 GiB)
[ 4954.497114] sd 11:0:0:0: [sdb] Write Protect is off
[ 4954.497122] sd 11:0:0:0: [sdb] Mode Sense: 0f 00 00 00
[ 4954.497128] sd 11:0:0:0: [sdb] Assuming drive cache: write through
[ 4954.498603] sd 11:0:0:0: [sdb] Assuming drive cache: write through
[ 4954.498615] sdb:
[ 4954.512994] sd 11:0:0:0: [sdb] Assuming drive cache: write through
[ 4954.513006] sd 11:0:0:0: [sdb] Attached SCSI disk
**************************dmesg log on host PC when its not get mounted***************************
[ 5017.210531] usb 2-4: new high speed USB device using ehci_hcd and address 9
[ 5017.362659] usb 2-4: configuration #1 chosen from 1 choice
[ 5017.368389] scsi12 : SCSI emulation for USB Mass Storage devices
[ 5017.368733] usb-storage: device found at 9
[ 5017.368738] usb-storage: waiting for device to settle before scanning
[ 5022.363108] usb-storage: device scan complete
[ 5022.363936] scsi 12:0:0:0: Direct-Access Linux File-Stor Gadget 0316 PQ: 0 ANSI: 2
[ 5022.365771] sd 12:0:0:0: Attached scsi generic sg2 type 0
[ 5022.373849] sd 12:0:0:0: [sdb] 3405780 512-byte logical blocks: (1.74 GB/1.62 GiB)
[ 5022.374341] sd 12:0:0:0: [sdb] Write Protect is off
[ 5022.374349] sd 12:0:0:0: [sdb] Mode Sense: 0f 00 00 00
[ 5022.374355] sd 12:0:0:0: [sdb] Assuming drive cache: write through
[ 5022.375592] sd 12:0:0:0: [sdb] Assuming drive cache: write through
[ 5022.375602] sdb:
[ 5022.500314] usb 2-4: reset high speed USB device using ehci_hcd and address 9
[ 5022.802690] usb 2-4: reset high speed USB device using ehci_hcd and address 9
[ 5023.091769] usb 2-4: reset high speed USB device using ehci_hcd and address 9
[ 5054.132665] usb 2-4: reset high speed USB device using ehci_hcd and address 9
[ 5054.288727] sd 12:0:0:0: [sdb] Unhandled error code
[ 5054.288736] sd 12:0:0:0: [sdb] Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK
[ 5054.288746] sd 12:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00
[ 5054.288769] end_request: I/O error, dev sdb, sector 0
[ 5054.288780] Buffer I/O error on device sdb, logical block 0
[ 5054.288790] Buffer I/O error on device sdb, logical block 1
[ 5054.420186] usb 2-4: reset high speed USB device using ehci_hcd and address 9
[ 5054.711914] usb 2-4: reset high speed USB device using ehci_hcd and address 9
[ 5055.020186] usb 2-4: reset high speed USB device using ehci_hcd and address 9
[ 5055.312695] usb 2-4: reset high speed USB device using ehci_hcd and address 9
[ 5055.464990] sd 12:0:0:0: [sdb] Unhandled error code
[ 5055.464999] sd 12:0:0:0: [sdb] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK
[ 5055.465010] sd 12:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00
[ 5055.465034] end_request: I/O error, dev sdb, sector 0
[ 5055.465046] Buffer I/O error on device sdb, logical block 0
[ 5055.465055] Buffer I/O error on device sdb, logical block 1
[ 5055.600294] usb 2-4: reset high speed USB device using ehci_hcd and address 9
[ 5055.902714] usb 2-4: reset high speed USB device using ehci_hcd and address 9
[ 5056.191852] usb 2-4: reset high speed USB device using ehci_hcd and address 9
[ 5056.347992] sd 12:0:0:0: [sdb] Unhandled error code
[ 5056.348002] sd 12:0:0:0: [sdb] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK
[ 5056.348013] sd 12:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00
[ 5056.348036] end_request: I/O error, dev sdb, sector 0
[ 5056.348047] Buffer I/O error on device sdb, logical block 0
[ 5056.348057] Buffer I/O error on device sdb, logical block 1
[ 5056.482758] usb 2-4: reset high speed USB device using ehci_hcd and address 9
[ 5056.770435] usb 2-4: reset high speed USB device using ehci_hcd and address 9
[ 5057.061396] usb 2-4: reset high speed USB device using ehci_hcd and address 9
[ 5057.217615] sd 12:0:0:0: [sdb] Unhandled error code
[ 5057.217626] sd 12:0:0:0: [sdb] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK
[ 5057.217636] sd 12:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00
[ 5057.217660] end_request: I/O error, dev sdb, sector 0
[ 5057.217671] Buffer I/O error on device sdb, logical block 0
[ 5057.217682] Buffer I/O error on device sdb, logical block 1
When connected to windows pc the gadget name appears in removable devices icon.
Am i missing something or any more further steps is needed ?
Please help us on this issue.
