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The PM usage counter of isys was bumped up when start camera stream
(opening firmware) but it was not dropped after stream stop(closing
firmware), it forbids system fail to suspend due to the wrong PM state
of ISYS. This patch drop the PM usage counter in firmware close to fix
it.
Cc: [email protected]
Fixes: a516d36bdc ("media: staging/ipu7: add IPU7 input system device driver")
Signed-off-by: Bingbu Cao <[email protected]>
Signed-off-by: Sakari Ailus <[email protected]>
Signed-off-by: Hans Verkuil <[email protected]>