This is a note to let you know that I've just added the patch titled
media: vsp1: Fix runtime PM imbalance on error
to the 5.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
media-vsp1-fix-runtime-pm-imbalance-on-error.patch
and it can be found in the queue-5.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 8a1dc1f50dd217caabc8619542f453070f5d0bf7
Author: Dinghao Liu <dinghao.liu@xxxxxxxxxx>
Date: Mon Jun 8 07:29:19 2020 +0200
media: vsp1: Fix runtime PM imbalance on error
[ Upstream commit 98fae901c8883640202802174a4bd70a1b9118bd ]
pm_runtime_get_sync() increments the runtime PM usage counter even
when it returns an error code. Thus a pairing decrement is needed on
the error handling path to keep the counter balanced.
Signed-off-by: Dinghao Liu <dinghao.liu@xxxxxxxxxx>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx>
Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/media/platform/vsp1/vsp1_drv.c b/drivers/media/platform/vsp1/vsp1_drv.c
index c650e45bb0ad1..dc62533cf32ce 100644
--- a/drivers/media/platform/vsp1/vsp1_drv.c
+++ b/drivers/media/platform/vsp1/vsp1_drv.c
@@ -562,7 +562,12 @@ int vsp1_device_get(struct vsp1_device *vsp1)
int ret;
ret = pm_runtime_get_sync(vsp1->dev);
- return ret < 0 ? ret : 0;
+ if (ret < 0) {
+ pm_runtime_put_noidle(vsp1->dev);
+ return ret;
+ }
+
+ return 0;
}
/*
@@ -845,12 +850,12 @@ static int vsp1_probe(struct platform_device *pdev)
/* Configure device parameters based on the version register. */
pm_runtime_enable(&pdev->dev);
- ret = pm_runtime_get_sync(&pdev->dev);
+ ret = vsp1_device_get(vsp1);
if (ret < 0)
goto done;
vsp1->version = vsp1_read(vsp1, VI6_IP_VERSION);
- pm_runtime_put_sync(&pdev->dev);
+ vsp1_device_put(vsp1);
for (i = 0; i < ARRAY_SIZE(vsp1_device_infos); ++i) {
if ((vsp1->version & VI6_IP_VERSION_MODEL_MASK) ==
