linux-kernel - [PATCH 76/78] media: sun4i_v4l2: use pm_runtime_resume_and

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Message-Id: <19ff6114784154d1ce289b01bd22230a37b77a98.1619191723.git.mchehab+huawei@kernel.org>
Date:   Sat, 24 Apr 2021 08:45:26 +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>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Maxime Ripard <mripard@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org
Subject: [PATCH 76/78] media: sun4i_v4l2: 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/platform/sunxi/sun4i-csi/sun4i_v4l2.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/media/platform/sunxi/sun4i-csi/sun4i_v4l2.c b/drivers/media/platform/sunxi/sun4i-csi/sun4i_v4l2.c
index 4785faddf630..ed6ec41b9c2d 100644
--- a/drivers/media/platform/sunxi/sun4i-csi/sun4i_v4l2.c
+++ b/drivers/media/platform/sunxi/sun4i-csi/sun4i_v4l2.c
@@ -206,9 +206,9 @@ static int sun4i_csi_open(struct file *file)
 	if (ret)
 		return ret;
 
-	ret = pm_runtime_get_sync(csi->dev);
+	ret = pm_runtime_resume_and_get(csi->dev);
 	if (ret < 0)
-		goto err_pm_put;
+		goto err_unlock;
 
 	ret = v4l2_pipeline_pm_get(&csi->vdev.entity);
 	if (ret)
@@ -225,8 +225,7 @@ static int sun4i_csi_open(struct file *file)
 err_pipeline_pm_put:
 	v4l2_pipeline_pm_put(&csi->vdev.entity);
 
-err_pm_put:
-	pm_runtime_put(csi->dev);
+err_unlock:
 	mutex_unlock(&csi->lock);
 
 	return ret;
-- 
2.30.2