Thread (12 messages) 12 messages, 6 authors, 2012-10-02
STALE5015d
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[PATCH 6/6] drivers/atm/iphase.c: fix error return code

From: Julia Lawall <hidden>
Date: 2012-08-05 09:52:54
Also in: lkml, netdev
Subsystem: atm, the rest · Maintainers: Chas Williams, Linus Torvalds

From: Julia Lawall <redacted>

Convert a 0 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>
@@
identifier ret;
expression e,e1,e2,e3,e4,x;
@@

(
if (\(ret != 0\|ret < 0\) || ...) { ... return ...; }
|
ret = 0
)
... when != ret = e1
*x = \(kmalloc\|kzalloc\|kcalloc\|devm_kzalloc\|ioremap\|ioremap_nocache\|devm_ioremap\|devm_ioremap_nocache\)(...);
... when != x = e2
    when != ret = e3
*if (x = NULL || ...)
{
  ... when != ret = e4
*  return ret;
}
// </smpl>

Signed-off-by: Julia Lawall <redacted>

---
 drivers/atm/iphase.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/atm/iphase.c b/drivers/atm/iphase.c
index d438601..96cce6d 100644
--- a/drivers/atm/iphase.c
+++ b/drivers/atm/iphase.c
@@ -2362,7 +2362,7 @@ static int __devinit ia_init(struct atm_dev *dev)
 	{  
 		printk(DEV_LABEL " (itf %d): can't set up page mapping\n",  
 			    dev->number);  
-		return error;  
+		return -ENOMEM;
 	}  
 	IF_INIT(printk(DEV_LABEL " (itf %d): rev.%d,base=%p,irq=%d\n",  
 			dev->number, iadev->pci->revision, base, iadev->irq);)
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