b43: Fix swatch warning
Swatch reports the following warning for main.c:
CHECK drivers/net/wireless/b43/main.c
drivers/net/wireless/b43/main.c +4115 b43_wireless_core_stop(7) warn: variable dereferenced before check 'dev'
After analysis, this is not a bug, but a false warning. Nonetheless,
a cleanup is in order to prevent some future janitor proposing
the wrong fix, as I did in my original patch.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index d2b1d1f..1722941 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -4131,10 +4131,13 @@
* because the core might be gone away while we unlocked the mutex. */
static struct b43_wldev * b43_wireless_core_stop(struct b43_wldev *dev)
{
- struct b43_wl *wl = dev->wl;
+ struct b43_wl *wl;
struct b43_wldev *orig_dev;
u32 mask;
+ if (!dev)
+ return NULL;
+ wl = dev->wl;
redo:
if (!dev || b43_status(dev) < B43_STAT_STARTED)
return dev;