[PATCH v2 5/7] media: ov8858: Use pm_runtime_get_if_active(), put usage_count correctly

[Sakari Ailus <sakari.ailus@linux.intel.com>]

Use pm_runtime_get_if_active() to get the device's runtime PM usage_count
and set controls, then use runtime PM autosuspend once the controls have
been set (instead of likely transitioning to suspended state immediately).

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
 drivers/media/i2c/ov8858.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/media/i2c/ov8858.c b/drivers/media/i2c/ov8858.c
index 3af6125a2eee..a99b91700a8d 100644
--- a/drivers/media/i2c/ov8858.c
+++ b/drivers/media/i2c/ov8858.c
@@ -1538,7 +1538,7 @@ static int ov8858_set_ctrl(struct v4l2_ctrl *ctrl)
 	struct v4l2_subdev_state *state;
 	u16 digi_gain;
 	s64 max_exp;
-	int ret;
+	int ret, pm_status;
 
 	/*
 	 * The control handler and the subdev state use the same mutex and the
@@ -1561,7 +1561,8 @@ static int ov8858_set_ctrl(struct v4l2_ctrl *ctrl)
 		break;
 	}
 
-	if (!pm_runtime_get_if_in_use(&client->dev))
+	pm_status = pm_runtime_get_if_active(&client->dev);
+	if (!pm_status)
 		return 0;
 
 	switch (ctrl->id) {
@@ -1601,7 +1602,8 @@ static int ov8858_set_ctrl(struct v4l2_ctrl *ctrl)
 		break;
 	}
 
-	pm_runtime_put(&client->dev);
+	if (pm_status > 0)
+		pm_runtime_mark_busy_autosusp(&client->dev);
 
 	return ret;
 }
-- 
2.39.2