gadgetfs: host side enumeration issues

[Anshuman Saxena <anshuman.saxena@xxxxxxxxxxxxxxxxx>]

Dear All,

We have a at91 board on which we are running a stripped down version of linux 2.6.20. While we have been able to run different kernel space gadget drivers like g_ether and g_zero on the board, we are facing some problem with the test program (usb.c) that comes with the user space driver gadgetfs.

Here are the steps we take (on the board)

[root @ \h]# insmod gadgetfs.ko

gadgetfs: USB Gadget filesystem, version 24 Aug 2004

[root @ \h]# mkdir /dev/gadget

[root @ \h]# mount -t gadgetfs gadgetfs /dev/gadget

[root @ \h]# ls /dev/gadget

at91_udc

[root @ \h]# chmod 744 usb

[root @ \h]# ./usb -r "HDR" -v

gadgetfs: bound to at91_udc driver

/dev/gadget/at91_udc ep0 configured

serial="HDR"

Now we connect the board to a linux host and the above output on the board continues as below

gadgetfs: suspended from state 2

** Thu Jan 1 00:08:12 1998

SUSPEND

gadgetfs: suspenrom state 2

SUSgadgetfs: connected

CONNECT full speed

gadgetfs: disconnected

DISCONNECT

gadgetfs: connected

CONNECT full speed

SETUP 80.06 v0300 i0000 255

SETUP 80.06 v0303 i0gadgetfs: disconnected

409 255

ep0 read after poll: Level 2 halted

done

[root @ \h]#

At the host, dmesg reveals the following

usb 4-2: new full speed USB device using uhci_hcd and address 17

usb 4-2: configuration #3 chosen from 1 choice

usb 4-2: can't set config #3, error -71

usb 4-2: USB disconnect, address 17



As you can see, it does bind to the at91_udc but there seems to be some problem with the user space program usb.c. Wondering if anyone came across this issue?

Regards,

Anshuman

 



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