[alsa-devel] [PATCH 3/10] sound/atmel/abdac.c: fix error return code
Julia Lawall
Julia.Lawall at lip6.fr
Sun Apr 5 13:38:32 CEST 2015
From: Julia Lawall <Julia.Lawall at lip6.fr>
Initialize retval before returning from a failed call to ioremap.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
(
if at p1 (\(ret < 0\|ret != 0\))
{ ... return ret; }
|
ret at p1 = 0
)
... when != ret = e1
when != &ret
*if(...)
{
... when != ret = e2
when forall
return ret;
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall at lip6.fr>
---
sound/atmel/abdac.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/sound/atmel/abdac.c b/sound/atmel/abdac.c
index 98554f4..277ebce 100644
--- a/sound/atmel/abdac.c
+++ b/sound/atmel/abdac.c
@@ -452,6 +452,7 @@ static int __devinit atmel_abdac_probe(struct platform_device *pdev)
dac->regs = ioremap(regs->start, resource_size(regs));
if (!dac->regs) {
dev_dbg(&pdev->dev, "could not remap register memory\n");
+ retval = -ENOMEM;
goto out_free_card;
}
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