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usb wifi device can not work with other usb devices on usb hub!

YHLShareware
Intellectual 830 points

Hi All,

I found a serious issue when I used usb hub with inserting WIFI device zydas 1211b based WIFI dongle and usb storage disk.

1. During starting the linux kernel, I got many error messages

"FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
ls: /usb/merge: Input/output error "

2. After finishing the linux kernel boot, I loaded the wifi device driver module (insmod zd1211b.ko) and wifi device can work.

    When I did bandwidth test using IPERF(bandwidth test tool), frequently I got errors :

"Tx status: -110, Error Occur in zd1211_rx_comp_cb, nonzero read bulk status received: -EPROTO", and usb storage disk can not be written (it was set as read-only filesystem).

Your much help is appreciated. Thanks in advance.

 

Best Regards,

Jeff