From: Dinghao Liu <dinghao.liu@zju.edu.cn>
To: dinghao.liu@zju.edu.cn, kjlu@umn.edu
Cc: Sylwester Nawrocki <sylvester.nawrocki@gmail.com>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
linux-media@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] media: platform: s3c-camif: Fix runtime PM imbalance on error
Date: Thu, 21 May 2020 21:29:33 +0800 [thread overview]
Message-ID: <20200521132933.16450-1-dinghao.liu@zju.edu.cn> (raw)
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.
Also, call pm_runtime_disable() when pm_runtime_get_sync() returns
an error code.
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
---
drivers/media/platform/s3c-camif/camif-core.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/media/platform/s3c-camif/camif-core.c b/drivers/media/platform/s3c-camif/camif-core.c
index c6fbcd7036d6..ee624804862e 100644
--- a/drivers/media/platform/s3c-camif/camif-core.c
+++ b/drivers/media/platform/s3c-camif/camif-core.c
@@ -464,7 +464,7 @@ static int s3c_camif_probe(struct platform_device *pdev)
ret = camif_media_dev_init(camif);
if (ret < 0)
- goto err_alloc;
+ goto err_pm;
ret = camif_register_sensor(camif);
if (ret < 0)
@@ -498,10 +498,9 @@ static int s3c_camif_probe(struct platform_device *pdev)
media_device_unregister(&camif->media_dev);
media_device_cleanup(&camif->media_dev);
camif_unregister_media_entities(camif);
-err_alloc:
+err_pm:
pm_runtime_put(dev);
pm_runtime_disable(dev);
-err_pm:
camif_clk_put(camif);
err_clk:
s3c_camif_unregister_subdev(camif);
--
2.17.1
next reply other threads:[~2020-05-21 13:29 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-21 13:29 Dinghao Liu [this message]
2020-05-24 19:15 ` [PATCH] media: platform: s3c-camif: Fix runtime PM imbalance on error Sylwester Nawrocki
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