V4L/DVB (9277): gspca: propagate an error in m5602_start_transfer()

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

1 files changed, 6 insertions, 4 deletions

diff --git a/drivers/media/video/gspca/m5602/m5602_core.c b/drivers/media/video/gspca/m5602/m5602_core.c
index 19d5e351ccc1..a7021fcec2bf 100644
--- a/drivers/media/video/gspca/m5602/m5602_core.c
+++ b/drivers/media/video/gspca/m5602/m5602_core.c
@@ -146,16 +146,18 @@ static int m5602_start_transfer(struct gspca_dev *gspca_dev)
 {
         struct sd *sd = (struct sd *) gspca_dev;
         __u8 *buf = sd->gspca_dev.usb_buf;
+        int err;
 
         /* Send start command to the camera */
         const u8 buffer[4] = {0x13, 0xf9, 0x0f, 0x01};
         memcpy(buf, buffer, sizeof(buffer));
-        usb_control_msg(gspca_dev->dev, usb_sndctrlpipe(gspca_dev->dev, 0),
-                        0x04, 0x40, 0x19, 0x0000, buf,
-                        4, M5602_URB_MSG_TIMEOUT);
+        err = usb_control_msg(gspca_dev->dev,
+                              usb_sndctrlpipe(gspca_dev->dev, 0),
+                              0x04, 0x40, 0x19, 0x0000, buf,
+                              4, M5602_URB_MSG_TIMEOUT);
 
         PDEBUG(DBG_V4L2, "Transfer started");
-        return 0;
+        return (err < 0) ? err : 0;
 }
 
 static void m5602_urb_complete(struct gspca_dev *gspca_dev,