On Fri, 10 Nov 2006, Viehweger Thomas wrote:
> Hi,
>
> after switching on and connecting the emtrion HICO.ARM9 demo board to a
> Windows 2000 PC in the device manager appears a "USB device" with a
> yellow exclamation mark. This might be o.k. because at this time no
> operating system is running on the demo board. After booting the kernel
> (with compiled in at91_udc driver), the yellow marked "USB device" still
> is present.
> After loading the g_file_storage module the yellow marked "USB device"
> disappears. No other device appears!
> When I try to rmmod g_file_storage the yellow marked "USB device"
> re-appears and the board seems to hang. Switching on debug messages shows
> a fast repeating
> g_file_storage gadget: disconnect or port reset
>
> Here is a (quite long) log what happens when connecting the gadget with a
> Linux host. To show more details, I added something like DBG("%s\n",
> __FUNCTION__) on top of every function. As noted earlier - the host PC
> does not recognise the attaching of the gadget, but it recognises the
> rmmod g_file_storage:
I can't tell you much about what's wrong with your system, but it looks
like there are some problems in the at91_udc driver.
This is your opportunity to fix a driver bug!
Alan Stern
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