media: staging/ipu7: fix isys device runtime PM usage in firmware closing

bingbucao · Hans Verkuil · commit 895d3b4b5832 · 2025-09-10T10:40:53.000+02:00
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: Stable@vger.kernel.org Fixes: a516d36 ("media: staging/ipu7: add IPU7 input system device driver") Signed-off-by: Bingbu Cao <bingbu.cao@intel.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
diff --git a/drivers/staging/media/ipu7/ipu7-isys-video.c b/drivers/staging/media/ipu7/ipu7-isys-video.c
@@ -917,6 +917,7 @@ void ipu7_isys_fw_close(struct ipu7_isys *isys)
 		ipu7_fw_isys_close(isys);
 
 	mutex_unlock(&isys->mutex);
+	pm_runtime_put(&isys->adev->auxdev.dev);
 }
 
 int ipu7_isys_setup_video(struct ipu7_isys_video *av,

Original file line number	Diff line number	Diff line change
`@@ -917,6 +917,7 @@ void ipu7_isys_fw_close(struct ipu7_isys *isys)`
`917`	`917`	`ipu7_fw_isys_close(isys);`
`918`	`918`
`919`	`919`	`mutex_unlock(&isys->mutex);`
	`920`	`+ pm_runtime_put(&isys->adev->auxdev.dev);`
`920`	`921`	`}`
`921`	`922`
`922`	`923`	`int ipu7_isys_setup_video(struct ipu7_isys_video *av,`