diff options
| author | Andreas Pape <ap@ca-pape.de> | 2018-11-23 19:14:54 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2018-12-05 22:10:48 +0300 |
| commit | 3c28b91380dd1183347d32d87d820818031ebecf (patch) | |
| tree | c2f58f5ae0597e5965ae5c60ebddd116808454c9 /drivers | |
| parent | 2bf47eefca6de0547e866c05935c592ed7ea06f6 (diff) | |
| download | linux-3c28b91380dd1183347d32d87d820818031ebecf.tar.xz | |
media: stkwebcam: Bugfix for wrong return values
usb_control_msg returns in case of a successfully sent message the number
of sent bytes as a positive number. Don't use this value as a return value
for stk_camera_read_reg, as a non-zero return value is used as an error
condition in some cases when stk_camera_read_reg is called.
Signed-off-by: Andreas Pape <ap@ca-pape.de>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/usb/stkwebcam/stk-webcam.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/media/usb/stkwebcam/stk-webcam.c b/drivers/media/usb/stkwebcam/stk-webcam.c index e61427e50525..b8ec74d98e8d 100644 --- a/drivers/media/usb/stkwebcam/stk-webcam.c +++ b/drivers/media/usb/stkwebcam/stk-webcam.c @@ -171,7 +171,11 @@ int stk_camera_read_reg(struct stk_camera *dev, u16 index, u8 *value) *value = *buf; kfree(buf); - return ret; + + if (ret < 0) + return ret; + else + return 0; } static int stk_start_stream(struct stk_camera *dev) |