linux-kernel - [PATCH] [v2] media: smiapp: Fix runtime PM imbalance on error

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Message-Id: <20200525081958.3525-1-dinghao.liu@zju.edu.cn>
Date:   Mon, 25 May 2020 16:19:58 +0800
From:   Dinghao Liu <dinghao.liu@....edu.cn>
To:     dinghao.liu@....edu.cn, kjlu@....edu
Cc:     Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] [v2] media: smiapp: Fix runtime PM imbalance on error

When v4l2_async_register_subdev_sensor_common() returns
an error code, a pairing runtime PM usage counter
decrement is needed to keep the counter balanced.

Signed-off-by: Dinghao Liu <dinghao.liu@....edu.cn>
---

Changelog:

v2: - Use pm_runtime_put_noidle() insead of
      pm_runtime_put_autosuspend().
---
 drivers/media/i2c/smiapp/smiapp-core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c
index 5e4f6a2ef78e..0a8d27481bd1 100644
--- a/drivers/media/i2c/smiapp/smiapp-core.c
+++ b/drivers/media/i2c/smiapp/smiapp-core.c
@@ -3103,6 +3103,7 @@ static int smiapp_probe(struct i2c_client *client)
 	return 0;
 
 out_disable_runtime_pm:
+	pm_runtime_put_noidle(&client->dev);
 	pm_runtime_disable(&client->dev);
 
 out_media_entity_cleanup:
-- 
2.17.1