media: mt9m111: add s_stream callback
authorMarco Felsch <m.felsch@pengutronix.de>
Tue, 27 Nov 2018 10:02:48 +0000 (05:02 -0500)
committerMauro Carvalho Chehab <mchehab+samsung@kernel.org>
Wed, 5 Dec 2018 11:37:55 +0000 (06:37 -0500)
commit7784b1d2789816d3e5cef7243b6b6b4d7185ca3d
treefcba989f2fc46f9b5eebfb052cd839dc98f108bc
parent4f9d7225c70dd9d3f406b79e60f8dbd2cd5ae743
media: mt9m111: add s_stream callback

Add callback to check if we are already streaming. Now other callbacks
can check the state and return -EBUSY if we already streaming.

Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
drivers/media/i2c/mt9m111.c