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authorJulia Lawall <julia@diku.dk>2008-12-16 15:43:29 -0800
committerDavid S. Miller <davem@davemloft.net>2008-12-16 15:43:29 -0800
commitf40e0638237a2d3e2ce8bedf3af4b3c02cf6fff7 (patch)
treec70b1a86681bd827fd0d7028cef391042f344e79
parentf162e97d778ec29492be8eb9bbecb65be976b7c8 (diff)
drivers/net/hamradio: Move a dereference below a NULL test
In each case, if the NULL test is necessary, then the dereference should be moved below the NULL test. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ type T; expression E; identifier i,fld; statement S; @@ - T i = E->fld; + T i; ... when != E when != i if (E == NULL) S + i = E->fld; // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/hamradio/mkiss.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/hamradio/mkiss.c b/drivers/net/hamradio/mkiss.c
index 7570c73..bbdb311 100644
--- a/drivers/net/hamradio/mkiss.c
+++ b/drivers/net/hamradio/mkiss.c
@@ -846,12 +846,13 @@ static int mkiss_ioctl(struct tty_struct *tty, struct file *file,
unsigned int cmd, unsigned long arg)
{
struct mkiss *ax = mkiss_get(tty);
- struct net_device *dev = ax->dev;
+ struct net_device *dev;
unsigned int tmp, err;
/* First make sure we're connected. */
if (ax == NULL)
return -ENXIO;
+ dev = ax->dev;
switch (cmd) {
case SIOCGIFNAME: