linux-kernel - [PATCH 1/2 v4] ARM: imx: fix error handling in ipu device registration

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Date:	Sun, 18 May 2014 22:50:59 +0200
From:	Emil Goode <emilgoode@...il.com>
To:	Shawn Guo <shawn.guo@...escale.com>,
	Sascha Hauer <kernel@...gutronix.de>,
	Russell King <linux@....linux.org.uk>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org, Emil Goode <emilgoode@...il.com>
Subject: [PATCH 1/2 v4] ARM: imx: fix error handling in ipu device registration

If we fail to allocate struct platform_device pdev we
dereference it after the goto label err.

This bug was found using coccinelle.

Signed-off-by: Emil Goode <emilgoode@...il.com>
---
v4: Simplified version that just fixes the bug.
    Also updated the changelog.
v3: Made subject line more specific.
v2: Changed to return -ENOMEM instead of ret where possible and
    updated the subject line.

 arch/arm/mach-imx/devices/platform-ipu-core.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mach-imx/devices/platform-ipu-core.c b/arch/arm/mach-imx/devices/platform-ipu-core.c
index fc4dd7c..6bd7c3f 100644
--- a/arch/arm/mach-imx/devices/platform-ipu-core.c
+++ b/arch/arm/mach-imx/devices/platform-ipu-core.c
@@ -77,7 +77,7 @@ struct platform_device *__init imx_alloc_mx3_camera(
 
 	pdev = platform_device_alloc("mx3-camera", 0);
 	if (!pdev)
-		goto err;
+		return ERR_PTR(-ENOMEM);
 
 	pdev->dev.dma_mask = kmalloc(sizeof(*pdev->dev.dma_mask), GFP_KERNEL);
 	if (!pdev->dev.dma_mask)
-- 
1.7.10.4

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