b43: Don't abuse wl->current_dev in the led work

Don't abuse wl->current_dev in the LED work for checking whether we're
going down. Add an explicit variable.
This fixes a crash on rmmod dereferencing the wl->current_dev NULL pointer
in various other places of the driver.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index 7fa947ca7c32..a8840ef63770 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -4987,7 +4987,7 @@ static void b43_remove(struct ssb_device *dev)
                  * might have modified it. Restoring is important, so the networking
                  * stack can properly free resources. */
                 wl->hw->queues = wl->mac80211_initially_registered_queues;
-                wl->current_dev = NULL;
+                wl->leds.stop = 1;
                 cancel_work_sync(&wl->leds.work);
                 ieee80211_unregister_hw(wl->hw);
         }