diff mbox

[1/5] drivers/net/wireless/ipw2x00/ipw2100.c: introduce missing initialization

Message ID alpine.DEB.2.02.1208191149400.2031@localhost6.localdomain6 (mailing list archive)
State Not Applicable, archived
Headers show

Commit Message

Julia Lawall Aug. 19, 2012, 9:49 a.m. UTC 
From: Julia Lawall <Julia.Lawall@lip6.fr>

The result of one call to a function is tested, and then at the second call
to the same function, the previous result, and not the current result, is
tested again.

Also changed &bssid to bssid, at the suggestion of Stanislav Yakovlev.

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

// <smpl>
@@
expression ret;
identifier f;
statement S1,S2;
@@

*ret = f(...);
if (\(ret != 0\|ret < 0\|ret == NULL\)) S1
... when any
*f(...);
if (\(ret != 0\|ret < 0\|ret == NULL\)) S2
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>

---
v2: changed &bssid to bssid

  drivers/net/wireless/ipw2x00/ipw2100.c |    3 ++-
  1 file changed, 2 insertions(+), 1 deletion(-)

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Comments

Stanislav Yakovlev Aug. 19, 2012, 10:07 a.m. UTC | #1 
On 19 August 2012 13:49, Julia Lawall <julia.lawall@lip6.fr> wrote:
> From: Julia Lawall <Julia.Lawall@lip6.fr>
>
> The result of one call to a function is tested, and then at the second call
> to the same function, the previous result, and not the current result, is
> tested again.
>
> Also changed &bssid to bssid, at the suggestion of Stanislav Yakovlev.
>
> The semantic match that finds the first problem is as follows:
>
> (http://coccinelle.lip6.fr/)
>
> // <smpl>
> @@
> expression ret;
> identifier f;
> statement S1,S2;
> @@
>
> *ret = f(...);
> if (\(ret != 0\|ret < 0\|ret == NULL\)) S1
> ... when any
> *f(...);
> if (\(ret != 0\|ret < 0\|ret == NULL\)) S2
> // </smpl>
>
> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
>
> ---
> v2: changed &bssid to bssid
>

Thank you, Julia.

Stanislav.
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diff mbox

Patch

diff --git a/drivers/net/wireless/ipw2x00/ipw2100.c b/drivers/net/wireless/ipw2x00/ipw2100.c
index 8a34202..534e655 100644
--- a/drivers/net/wireless/ipw2x00/ipw2100.c
+++ b/drivers/net/wireless/ipw2x00/ipw2100.c
@@ -2042,7 +2042,8 @@  static void isr_indicate_associated(struct ipw2100_priv *priv, u32 status)
  		return;
  	}
  	len = ETH_ALEN;
-	ipw2100_get_ordinal(priv, IPW_ORD_STAT_ASSN_AP_BSSID, &bssid, &len);
+	ret = ipw2100_get_ordinal(priv, IPW_ORD_STAT_ASSN_AP_BSSID, bssid,
+				  &len);
  	if (ret) {
  		IPW_DEBUG_INFO("failed querying ordinals at line %d\n",
  			       __LINE__);