linux-kernel - [PATCH] media: aspeed-video: Fix memory leaks in aspeed_video

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Message-Id: <20191026042519.29446-1-navid.emamdoost@gmail.com>
Date:   Fri, 25 Oct 2019 23:25:18 -0500
From:   Navid Emamdoost <navid.emamdoost@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     emamd001@....edu, kjlu@....edu, smccaman@....edu,
        Navid Emamdoost <navid.emamdoost@...il.com>,
        Eddie James <eajames@...ux.ibm.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Joel Stanley <joel@....id.au>,
        Andrew Jeffery <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] media: aspeed-video: Fix memory leaks in aspeed_video_probe

In the implementation of aspeed_video_probe() the allocated memory for
video should be released in case of failure. Release video if either
devm_ioremap_resource() or aspeed_video_init() or
aspeed_video_setup_video() fails.

Fixes: d2b4387f3bdf ("media: platform: Add Aspeed Video Engine driver")
Signed-off-by: Navid Emamdoost <navid.emamdoost@...il.com>
---
 drivers/media/platform/aspeed-video.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/drivers/media/platform/aspeed-video.c b/drivers/media/platform/aspeed-video.c
index eb12f3793062..8c473356132d 100644
--- a/drivers/media/platform/aspeed-video.c
+++ b/drivers/media/platform/aspeed-video.c
@@ -1663,18 +1663,24 @@ static int aspeed_video_probe(struct platform_device *pdev)
 
 	video->base = devm_ioremap_resource(video->dev, res);
 
-	if (IS_ERR(video->base))
-		return PTR_ERR(video->base);
+	if (IS_ERR(video->base)) {
+		rc = PTR_ERR(video->base);
+		goto free_video;
+	}
 
 	rc = aspeed_video_init(video);
 	if (rc)
-		return rc;
+		goto free_video;
 
 	rc = aspeed_video_setup_video(video);
 	if (rc)
-		return rc;
+		goto free_video;
 
 	return 0;
+
+free_video:
+	kfree(video);
+	return rc;
 }
 
 static int aspeed_video_remove(struct platform_device *pdev)
-- 
2.17.1