On Tue, May 24, 2005 at 07:52:28AM +0200, Martin Diehl wrote: > On Mon, 23 May 2005, Henk wrote: > > > > The variant in the kernel module will crash with something like: > > > ... host controller process error. something bad > > > ... host controller halted. very bad > > > > > > /* KERNEL variant */ > > > err = usb_control_msg(chip->udev, usb_sndctrlpipe(chip->udev, 0), > [...] > > > CMD[URB_INIT],URB_LENGTH, /* init string 16 bytes long*/ > > Just a wild guess: are you sure the CMD-buffer is properly kmalloc'ed, in > contrast to the stack or other location which is invalid for busmastering? > I've seen this mistake leading to HC-errors on UHCI in the past. > > Martin > No the cmd strings are staticly defined data strings .... I never thought of this before, but I'll bet you're absolutely right.
I will test this tonight. Thanks Martin! Regards, Henk ------------------------------------------------------- This SF.Net email is sponsored by Oracle Space Sweepstakes Want to be the first software developer in space? Enter now for the Oracle Space Sweepstakes! http://ads.osdn.com/?ad_id=7412&alloc_id=16344&op=click _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
