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Message-ID: <20121011215310.GA24651@kroah.com> Date: Fri, 12 Oct 2012 06:53:10 +0900 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: Henrik Rydberg <rydberg@...omail.se> Cc: Hans de Goede <hdegoede@...hat.com>, Alan Stern <stern@...land.harvard.edu>, linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org, Peter Stuge <peter@...ge.se> Subject: Re: REGRESSION: usbdevfs: Use-scatter-gather-lists-for-large-bulk-transfers On Thu, Oct 11, 2012 at 11:37:07PM +0200, Henrik Rydberg wrote: > Hi Hans, > > > Oh what fun (not). The best way to figure out what really is going > > on is to get some usb level traces. Note my first hunch is that what > > you're seeing is a device firmware bug, as this patch together with > > a new libusb (which you seem to also have) will make bulk transfers > > run slightly faster, which might be just enough to overwhelm your > > device ... > > Or, the large bulk transfer actually never worked in the first place. > The list you gave me seemed boringly long, so I read the patch more > closely instead. The fix below is the result. Greg, will you please > take it through your tree? Henrik, Very nice fix, thanks for debugging this. Hans, any objection to me taking this? greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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