drivers/net/wireless/libertas: 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. I have also taken advantage of the availability
of the value of priv->dev in the subsequent calls to netif_stop_queue and
netif_carrier_off.
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
Acked-by: Dan Williams
Signed-off-by: Andrew Morton
Signed-off-by: David S. Miller
---
drivers/net/wireless/libertas/main.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/libertas/main.c b/drivers/net/wireless/libertas/main.c
index 3dba836..4e0007d 100644
--- a/drivers/net/wireless/libertas/main.c
+++ b/drivers/net/wireless/libertas/main.c
@@ -1369,7 +1369,7 @@ EXPORT_SYMBOL_GPL(lbs_start_card);
void lbs_stop_card(struct lbs_private *priv)
{
- struct net_device *dev = priv->dev;
+ struct net_device *dev;
struct cmd_ctrl_node *cmdnode;
unsigned long flags;
@@ -1377,9 +1377,10 @@ void lbs_stop_card(struct lbs_private *priv)
if (!priv)
goto out;
+ dev = priv->dev;
- netif_stop_queue(priv->dev);
- netif_carrier_off(priv->dev);
+ netif_stop_queue(dev);
+ netif_carrier_off(dev);
lbs_debugfs_remove_one(priv);
if (priv->mesh_tlv) { |
---
drivers/net/wireless/libertas/main.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/libertas/main.c b/drivers/net/wireless/libertas/main.c
index 3dba836..4e0007d 100644
--- a/drivers/net/wireless/libertas/main.c
+++ b/drivers/net/wireless/libertas/main.c
@@ -1369,7 +1369,7 @@ EXPORT_SYMBOL_GPL(lbs_start_card);
void lbs_stop_card(struct lbs_private *priv)
{
- struct net_device *dev = priv->dev;
+ struct net_device *dev;
struct cmd_ctrl_node *cmdnode;
unsigned long flags;
@@ -1377,9 +1377,10 @@ void lbs_stop_card(struct lbs_private *priv)
if (!priv)
goto out;
+ dev = priv->dev;
- netif_stop_queue(priv->dev);
- netif_carrier_off(priv->dev);
+ netif_stop_queue(dev);
+ netif_carrier_off(dev);
lbs_debugfs_remove_one(priv);
if (priv->mesh_tlv) {