summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorJulia Lawall <julia@diku.dk>2008-12-21 16:39:15 +0100
committerKrzysztof Hałasa <khc@pm.waw.pl>2008-12-22 01:12:09 +0100
commit4cb56b685617732733d4d9dffbf8c5a81d4a0c71 (patch)
tree8e2a0be26a2713b10f0adac145823df59d0102aa
parent93bc933524d05e3b391358e24b3666599f8ec026 (diff)
drivers/net/wan: Remove redundant test
arg is checked not to be NULL a few lines before. A simplified version of the semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @r exists@ local idexpression x; expression E; position p1,p2; @@ if (x@p1 == NULL || ...) { ... when forall return ...; } ... when != \(x=E\|x--\|x++\|--x\|++x\|x-=E\|x+=E\|x|=E\|x&=E\|&x\) ( x@p2 == NULL | x@p2 != NULL ) // another path to the test that is not through p1? @s exists@ local idexpression r.x; position r.p1,r.p2; @@ ... when != x@p1 ( x@p2 == NULL | x@p2 != NULL ) @fix depends on !s@ position r.p1,r.p2; expression x,E; statement S1,S2; @@ ( - if ((x@p2 != NULL) || ...) S1 | - if ((x@p2 == NULL) && ...) S1 | - BUG_ON(x@p2 == NULL); ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
-rw-r--r--drivers/net/wan/pc300_drv.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/net/wan/pc300_drv.c b/drivers/net/wan/pc300_drv.c
index d67957af589..c23fde0c034 100644
--- a/drivers/net/wan/pc300_drv.c
+++ b/drivers/net/wan/pc300_drv.c
@@ -2718,9 +2718,8 @@ static int cpc_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
}
pc300patrntst.num_errors =
falc_pattern_test_error(card, ch);
- if (!arg
- || copy_to_user(arg, &pc300patrntst,
- sizeof (pc300patterntst_t)))
+ if (copy_to_user(arg, &pc300patrntst,
+ sizeof(pc300patterntst_t)))
return -EINVAL;
} else {
falc_pattern_test(card, ch, pc300patrntst.patrntst_on);