[5/6] media: imx319: Use pm_runtime_get_if_active(), put usage_count correctly

Commit Message

Sakari Ailus Nov. 15, 2023, 6:18 p.m. UTC

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 <[e-mail]>
---
 drivers/media/i2c/imx319.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

Patch

diff --git a/drivers/media/i2c/imx319.c b/drivers/media/i2c/imx319.c
index 5378f607f340..b1031bba71b7 100644
--- a/drivers/media/i2c/imx319.c
+++ b/drivers/media/i2c/imx319.c
@@ -1880,8 +1880,8 @@  static int imx319_set_ctrl(struct v4l2_ctrl *ctrl)
 	struct imx319 *imx319 = container_of(ctrl->handler,
 					     struct imx319, ctrl_handler);
 	struct i2c_client *client = v4l2_get_subdevdata(&imx319->sd);
+	int ret, pm_status;
 	s64 max;
-	int ret;
 
 	/* Propagate change of current control to all related controls */
 	switch (ctrl->id) {
@@ -1898,7 +1898,8 @@  static int imx319_set_ctrl(struct v4l2_ctrl *ctrl)
 	 * Applying V4L2 control value only happens
 	 * when power is up for streaming
 	 */
-	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) {
@@ -1937,7 +1938,8 @@  static int imx319_set_ctrl(struct v4l2_ctrl *ctrl)
 		break;
 	}
 
-	pm_runtime_put(&client->dev);
+	if (pm_status > 0)
+		pm_runtime_put(&client->dev);
 
 	return ret;
 }