dect
/
linux-2.6
Archived
13
0
Fork 0
Code Releases Activity

drivers/net/irda/pxaficp_ir.c: fix error return code 

The function pxa_irda_probe() return 0 for success and negative value
for most of its internal tests failures. There is one exception
that is error case going to err_mem_3:. For this error case, the
function abort its success execution path, but returns non negative
value, making it difficult for a caller function to notice the error.

This patch fixes the error case that do not return negative value.

This was found by Coccinelle, but the code change was made by hand.
This patch is not robot generated.

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@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Peter Senna Tschudin 2012-10-05 11:33:05 +00:00 committed by David S. Miller
parent 6734011f3c
commit cbd841ca91
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/irda/pxaficp_ir.c
View File

@ -846,8 +846,10 @@ static int pxa_irda_probe(struct platform_device *pdev)
goto err_mem_2;
dev = alloc_irdadev(sizeof(struct pxa_irda));
if (!dev)
if (!dev) {
err = -ENOMEM;
goto err_mem_3;
}
SET_NETDEV_DEV(dev, &pdev->dev);
si = netdev_priv(dev);