[PATCH 1/12] drivers/atm: Correct redundant test

From: Julia Lawall
Date: Mon Jul 27 2009 - 12:15:51 EST


From: Julia Lawall <julia@xxxxxxx>

str has already been tested. It seems that this test should be on the
recently returned value snr.

A simplified version of the semantic match that finds this problem is as
follows: (http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@r exists@
local idexpression x;
expression E;
@@

if (x == NULL || ...) { ... when forall
return ...; }
... when != \(x=E\|x--\|x++\|--x\|++x\|x-=E\|x+=E\|x|=E\|x&=E\|&x\)
(
*x == NULL
|
*x != NULL
)
// </smpl>

Signed-off-by: Julia Lawall <julia@xxxxxxx>

---
drivers/atm/solos-pci.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/atm/solos-pci.c b/drivers/atm/solos-pci.c
index 9359613..307321b 100644
--- a/drivers/atm/solos-pci.c
+++ b/drivers/atm/solos-pci.c
@@ -372,7 +372,7 @@ static int process_status(struct solos_card *card, int port, struct sk_buff *skb
}

snr = next_string(skb);
- if (!str)
+ if (!snr)
return -EIO;
attn = next_string(skb);
if (!attn)
--
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