4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Akinobu Mita <akinobu.m...@gmail.com>
[ Upstream commit 30ed2b83343bd1e07884ca7355dac70d25ffc158 ]
When the subdevice doesn't provide s_power core ops callback, the
v4l2_subdev_call for s_power returns -ENOIOCTLCMD. If the subdevice
doesn't have the special handling for its power saving mode, the s_power
isn't required. So -ENOIOCTLCMD from the v4l2_subdev_call should be
ignored.
Cc: Hans Verkuil <hans.verk...@cisco.com>
Signed-off-by: Akinobu Mita <akinobu.m...@gmail.com>
Acked-by: Sylwester Nawrocki <sylvester.nawro...@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+sams...@kernel.org>
Signed-off-by: Sasha Levin <alexander.le...@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/media/platform/s3c-camif/camif-capture.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/media/platform/s3c-camif/camif-capture.c
+++ b/drivers/media/platform/s3c-camif/camif-capture.c
@@ -117,6 +117,8 @@ static int sensor_set_power(struct camif
if (camif->sensor.power_count == !on)
err = v4l2_subdev_call(sensor->sd, core, s_power, on);
+ if (err == -ENOIOCTLCMD)
+ err = 0;
if (!err)
sensor->power_count += on ? 1 : -1;
