V4L/DVB (8829): gspca: Have a clean kmalloc-ated buffer for USB exchanges.

The USB buffer may be used for DMA and there may be a caching problem
if the buffer is part of the device structure.
Thanks to Alan Stern.

Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/media/video/gspca/t613.c b/drivers/media/video/gspca/t613.c
index 81b175e15ca7..f034c748fc7e 100644
--- a/drivers/media/video/gspca/t613.c
+++ b/drivers/media/video/gspca/t613.c
@@ -391,7 +391,7 @@ static void reg_w(struct gspca_dev *gspca_dev,
                                 NULL, 0, 500);
                 return;
         }
-        if (len <= sizeof gspca_dev->usb_buf) {
+        if (len <= USB_BUF_SZ) {
                 memcpy(gspca_dev->usb_buf, buffer, len);
                 usb_control_msg(gspca_dev->dev,
                                 usb_sndctrlpipe(gspca_dev->dev, 0),