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 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
