linux-kernel - [PATCH 38/78] media: i2c: mt9m001: use pm_runtime_resume_and

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Message-Id: <beddb7295807f43a190f2add6c1665b7475cb154.1619191723.git.mchehab+huawei@kernel.org>
Date:   Sat, 24 Apr 2021 08:44:48 +0200
From:   Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To:     unlisted-recipients:; (no To-header on input)
Cc:     linuxarm@...wei.com, mauro.chehab@...wei.com,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Jacopo Mondi <jacopo+renesas@...ndi.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-kernel@...r.kernel.org, linux-media@...r.kernel.org
Subject: [PATCH 38/78] media: i2c: mt9m001: use pm_runtime_resume_and_get()

Commit dd8088d5a896 ("PM: runtime: Add pm_runtime_resume_and_get to deal with usage counter")
added pm_runtime_resume_and_get() in order to automatically handle
dev->power.usage_count decrement on errors.

Use the new API, in order to cleanup the error check logic.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
---
 drivers/media/i2c/mt9m001.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/media/i2c/mt9m001.c b/drivers/media/i2c/mt9m001.c
index 3b0ba8ed5233..57e15a291ebd 100644
--- a/drivers/media/i2c/mt9m001.c
+++ b/drivers/media/i2c/mt9m001.c
@@ -217,9 +217,9 @@ static int mt9m001_s_stream(struct v4l2_subdev *sd, int enable)
 		goto done;
 
 	if (enable) {
-		ret = pm_runtime_get_sync(&client->dev);
+		ret = pm_runtime_resume_and_get(&client->dev);
 		if (ret < 0)
-			goto put_unlock;
+			goto unlock;
 
 		ret = mt9m001_apply_selection(sd);
 		if (ret)
@@ -247,6 +247,7 @@ static int mt9m001_s_stream(struct v4l2_subdev *sd, int enable)
 
 put_unlock:
 	pm_runtime_put(&client->dev);
+unlock:
 	mutex_unlock(&mt9m001->mutex);
 
 	return ret;
@@ -834,7 +835,7 @@ static int mt9m001_remove(struct i2c_client *client)
 {
 	struct mt9m001 *mt9m001 = to_mt9m001(client);
 
-	pm_runtime_get_sync(&client->dev);
+	pm_runtime_resume_and_get(&client->dev);
 
 	v4l2_async_unregister_subdev(&mt9m001->subdev);
 	media_entity_cleanup(&mt9m001->subdev.entity);
-- 
2.30.2