Re: OTG MUSB driver issue?

[Felipe Balbi <me@felipebalbi.com>]

On Fri, Feb 27, 2009 at 06:52:38PM +0100, Frans Meulenbroeks wrote:
> Hi,
> 
> Several times I encountered issues with devices connected to the
> beagle board's OTG port (through a powered hub).
> (kernel 2.6.28-omap1).
> Today this happened again and I was lucky enough to be able to find
> the symptoms.
> 
> Scenario: I had a file on a USB hard disk. This file was copied to an
> SD card. After copying the file was corrupted.
> Removing the card and hard disk and connecting them to my linux box
> allowed me to compare the SD and hard disk version (using cmp -l).
> There were differences on four places. Each difference was 4 bytes (32
> bits) and occurred on a 4 byte boundary.
> 
> I have no idea what causes it, but I strongly suspect the MUSB driver.
> A hauppauge usb tv card also does not work when connected to the hub,
> whereas the same card works without problem on a linksys NSLU2 (which
> also has an arm processor).
> 
> Anyone suggestions? Patches ??

I guess that should be already fixed with patches queued up in Greg's
queue, but then again, let me check more. Could you:

# echo 5 > /sys/modules/musb_hdrc/parameters/debug
# echo 8 > /proc/sysrq-trigger

then connect device and send me log output ?

-- 
balbi