From 014639003c77a51fc319c9fdf225e7747cb6e18d Mon Sep 17 00:00:00 2001 From: Henrik Rydberg <rydberg@euromail.se> Date: Sat, 13 Oct 2012 12:20:36 +0200 Subject: [PATCH] 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> --- drivers/usb/core/devio.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index e0356cb859b5..b78fbe222b72 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -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; } -- GitLab