[PATCH 3/20] drivers/net/can/sja1000/peak_pci.c: fix error return code

[PATCH 3/20] drivers/net/can/sja1000/peak_pci.c: fix error return code

[Peter Senna Tschudin]

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

---
 drivers/net/can/sja1000/peak_pci.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/can/sja1000/peak_pci.c b/drivers/net/can/sja1000/peak_pci.c
index f0a1296..f5b82ae 100644
--- a/drivers/net/can/sja1000/peak_pci.c
+++ b/drivers/net/can/sja1000/peak_pci.c
@@ -583,12 +583,14 @@ static int __devinit peak_pci_probe(struct pci_dev *pdev,
 	cfg_base = pci_iomap(pdev, 0, PEAK_PCI_CFG_SIZE);
 	if (!cfg_base) {
 		dev_err(&pdev->dev, "failed to map PCI resource #0\n");
+		err = -ENOMEM;
 		goto failure_release_regions;
 	}
 
 	reg_base = pci_iomap(pdev, 1, PEAK_PCI_CHAN_SIZE * channels);
 	if (!reg_base) {
 		dev_err(&pdev->dev, "failed to map PCI resource #1\n");
+		err = -ENOMEM;
 		goto failure_unmap_cfg_base;
 	}
 

Re: [PATCH 3/20] drivers/net/can/sja1000/peak_pci.c: fix error return code

[Marc Kleine-Budde]

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On 10/03/2012 06:17 PM, Peter Senna Tschudin wrote:
> From: Peter Senna Tschudin <peter.senna@gmail.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@gmail.com>

Applied to can.
Tnx, Marc
-- 
Pengutronix e.K.                  | Marc Kleine-Budde           |
Industrial Linux Solutions        | Phone: +49-231-2826-924     |
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