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From: Julia Lawall <julia@diku.dk>
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/5] arch/arm/mach-omap2/smartreflex.c: add missing error-handling code
Date: Mon, 04 Jul 2011 14:11:43 +0000	[thread overview]
Message-ID: <1309788705-22278-3-git-send-email-julia@diku.dk> (raw)

From: Julia Lawall <julia@diku.dk>

At this point, the ioremap has taken place, so the error handling code at
the label err_iounmap should be used rather than returning directly.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r@
identifier x;
@@

kfree(x)

@@
identifier r.x;
expression E1!=0,E2,E3,E4;
statement S;
@@

(
if (<+...x...+>) S
|
if (...) { ... when != kfree(x)
               when != if (...) { ... kfree(x); ... }
               when != x = E3
* return E1;
}
... when != x = E2
if (...) { ... when != x = E4
 kfree(x); ... return ...; }
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>

---
 arch/arm/mach-omap2/smartreflex.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mach-omap2/smartreflex.c b/arch/arm/mach-omap2/smartreflex.c
index fb7dc52..e8280df 100644
--- a/arch/arm/mach-omap2/smartreflex.c
+++ b/arch/arm/mach-omap2/smartreflex.c
@@ -891,7 +891,7 @@ static int __init omap_sr_probe(struct platform_device *pdev)
 		ret = sr_late_init(sr_info);
 		if (ret) {
 			pr_warning("%s: Error in SR late init\n", __func__);
-			return ret;
+			goto err_iounmap;
 		}
 	}
 


             reply	other threads:[~2011-07-04 14:11 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-07-04 14:11 Julia Lawall [this message]
2011-07-05 17:51 ` [PATCH 3/5] arch/arm/mach-omap2/smartreflex.c: add missing error-handling code Kevin Hilman

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