From: Qiushi Wu <wu000273@umn.edu>
Date: Sat, 13 Jun 2020 22:30:08 +0000 (+0200)
Subject: media: rcar-vin: Fix a reference count leak.
X-Git-Tag: v5.15~2723^2~141
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=aaffa0126a111d65f4028c503c76192d4cc93277;p=platform%2Fkernel%2Flinux-starfive.git

media: rcar-vin: Fix a reference count leak.

pm_runtime_get_sync() increments the runtime PM usage counter even
when it returns an error code. Thus call pm_runtime_put_noidle()
if pm_runtime_get_sync() fails.

Fixes: 90dedce9bc54 ("media: rcar-vin: add function to manipulate Gen3 chsel value")
Signed-off-by: Qiushi Wu <wu000273@umn.edu>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---

diff --git a/drivers/media/platform/rcar-vin/rcar-dma.c b/drivers/media/platform/rcar-vin/rcar-dma.c
index d067439..3504dd4 100644
--- a/drivers/media/platform/rcar-vin/rcar-dma.c
+++ b/drivers/media/platform/rcar-vin/rcar-dma.c
@@ -1420,8 +1420,10 @@ int rvin_set_channel_routing(struct rvin_dev *vin, u8 chsel)
 	int ret;
 
 	ret = pm_runtime_get_sync(vin->dev);
-	if (ret < 0)
+	if (ret < 0) {
+		pm_runtime_put_noidle(vin->dev);
 		return ret;
+	}
 
 	/* Make register writes take effect immediately. */
 	vnmc = rvin_read(vin, VNMC_REG);