Commit 01463900 authored Oct 13, 2012 by Henrik Rydberg Committed by Greg Kroah-Hartman Oct 17, 2012

usbdevfs: Fix broken scatter-gather transfer



The handling of large output bulk transfers is broken; the same user
page is read over and over again. Fixed with this patch.

Cc: stable <stable@vger.kernel.org>
Acked-by: Peter Stuge <peter@stuge.se>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 2c78040c

drivers/usb/core/devio.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1348,6 +1348,7 @@ static int proc_do_submiturb(struct dev_state ps, struct usbdevfs_urb uurb,
		ret = -EFAULT;
		goto error;
		}
		uurb->buffer += u;
		}
		totlen -= u;
		}