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media: stkwebcam: Bugfix for wrong return values
authorAndreas Pape <ap@ca-pape.de>
Fri, 23 Nov 2018 16:14:54 +0000 (11:14 -0500)
committerMauro Carvalho Chehab <mchehab+samsung@kernel.org>
Wed, 5 Dec 2018 19:10:48 +0000 (14:10 -0500)
commit3c28b91380dd1183347d32d87d820818031ebecf
treec2f58f5ae0597e5965ae5c60ebddd116808454c9
parent2bf47eefca6de0547e866c05935c592ed7ea06f6
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>
drivers/media/usb/stkwebcam/stk-webcam.c