From 4cb56b685617732733d4d9dffbf8c5a81d4a0c71 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Sun, 21 Dec 2008 16:39:15 +0100 Subject: drivers/net/wan: Remove redundant test MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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/) // @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); ) // Signed-off-by: Julia Lawall Signed-off-by: Krzysztof Hałasa --- drivers/net/wan/pc300_drv.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'drivers/net/wan') diff --git a/drivers/net/wan/pc300_drv.c b/drivers/net/wan/pc300_drv.c index d67957af589c..c23fde0c0344 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); -- cgit v1.2.3