linux-kernel - [PATCH v2] media: aspeed: move err-handling together to the bottom

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Message-ID: <20211206004811.1118-1-jammy_huang@aspeedtech.com>
Date:   Mon, 6 Dec 2021 08:48:11 +0800
From:   Jammy Huang <jammy_huang@...eedtech.com>
To:     <hverkuil-cisco@...all.nl>, <sakari.ailus@...ux.intel.com>,
        <gregkh@...uxfoundation.org>, <laurent.pinchart@...asonboard.com>,
        <eajames@...ux.ibm.com>, <mchehab@...nel.org>, <joel@....id.au>,
        <andrew@...id.au>, <linux-media@...r.kernel.org>,
        <openbmc@...ts.ozlabs.org>, <linux-arm-kernel@...ts.infradead.org>,
        <linux-aspeed@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v2] media: aspeed: move err-handling together to the bottom

refine aspeed_video_setup_video() flow.

Signed-off-by: Jammy Huang <jammy_huang@...eedtech.com>
---
v2:
 - remove change-id in comment
---
 drivers/media/platform/aspeed-video.c | 24 +++++++++++-------------
 1 file changed, 11 insertions(+), 13 deletions(-)

diff --git a/drivers/media/platform/aspeed-video.c b/drivers/media/platform/aspeed-video.c
index fea5e4d0927e..f5c40d6b4ece 100644
--- a/drivers/media/platform/aspeed-video.c
+++ b/drivers/media/platform/aspeed-video.c
@@ -1641,11 +1641,8 @@ static int aspeed_video_setup_video(struct aspeed_video *video)
 
 	rc = video->ctrl_handler.error;
 	if (rc) {
-		v4l2_ctrl_handler_free(&video->ctrl_handler);
-		v4l2_device_unregister(v4l2_dev);
-
 		dev_err(video->dev, "Failed to init controls: %d\n", rc);
-		return rc;
+		goto err_ctrl_init;
 	}
 
 	v4l2_dev->ctrl_handler = &video->ctrl_handler;
@@ -1663,11 +1660,8 @@ static int aspeed_video_setup_video(struct aspeed_video *video)
 
 	rc = vb2_queue_init(vbq);
 	if (rc) {
-		v4l2_ctrl_handler_free(&video->ctrl_handler);
-		v4l2_device_unregister(v4l2_dev);
-
 		dev_err(video->dev, "Failed to init vb2 queue\n");
-		return rc;
+		goto err_vb2_init;
 	}
 
 	vdev->queue = vbq;
@@ -1685,15 +1679,19 @@ static int aspeed_video_setup_video(struct aspeed_video *video)
 	video_set_drvdata(vdev, video);
 	rc = video_register_device(vdev, VFL_TYPE_GRABBER, 0);
 	if (rc) {
-		vb2_queue_release(vbq);
-		v4l2_ctrl_handler_free(&video->ctrl_handler);
-		v4l2_device_unregister(v4l2_dev);
-
 		dev_err(video->dev, "Failed to register video device\n");
-		return rc;
+		goto err_video_reg;
 	}
 
 	return 0;
+
+err_video_reg:
+	vb2_queue_release(vbq);
+err_vb2_init:
+err_ctrl_init:
+	v4l2_ctrl_handler_free(&video->ctrl_handler);
+	v4l2_device_unregister(v4l2_dev);
+	return rc;
 }
 
 static int aspeed_video_init(struct aspeed_video *video)
-- 
2.25.1