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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>
This commit is contained in:
Larry Finger 2011-08-27 15:53:42 -05:00 committed by John W. Linville
parent 1ba45b9e3a
commit 9a53bf54b8
1 changed files with 4 additions and 1 deletions
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5
drivers/net/wireless/b43/main.c
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@ -4131,10 +4131,13 @@ static void b43_op_configure_filter(struct ieee80211_hw *hw,
* 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;