linux-kernel - [PATCH 06/10] drivers/video/imxfb.c: fix error return code

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Date:	Tue, 18 Sep 2012 14:07:56 +0200
From:	Peter Senna Tschudin <peter.senna@...il.com>
To:	kernel@...gutronix.de
Cc:	FlorianSchandinat@....de, linux-fbdev@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org,
	Peter Senna Tschudin <peter.senna@...il.com>
Subject: [PATCH 06/10] drivers/video/imxfb.c: fix error return code

From: Peter Senna Tschudin <peter.senna@...il.com>

Convert a nonnegative error return code to a negative one, as returned
elsewhere in the function.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}
// </smpl>

Signed-off-by: Peter Senna Tschudin <peter.senna@...il.com>
---
 drivers/video/imxfb.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/video/imxfb.c b/drivers/video/imxfb.c
index caad368..469b07c 100644
--- a/drivers/video/imxfb.c
+++ b/drivers/video/imxfb.c
@@ -803,6 +803,7 @@ static int __init imxfb_probe(struct platform_device *pdev)
 	fbi->regs = ioremap(res->start, resource_size(res));
 	if (fbi->regs == NULL) {
 		dev_err(&pdev->dev, "Cannot map frame buffer registers\n");
+		ret = -ENOMEM;
 		goto failed_ioremap;
 	}
 
-- 
1.7.11.4

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