drivers/net/hamradio: Move a dereference below a NULL test
Author: Julia Lawall <julia@diku.dk>
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/)
//
@@
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;
//
Signed-off-by: Julia Lawall
Signed-off-by: David S. Miller
---
drivers/net/hamradio/mkiss.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
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: |
---
drivers/net/hamradio/mkiss.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
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: