b43: fix wldev use after free

Commit Message

Dave Young Oct. 1, 2009, 8:49 a.m. UTC

None

Patch

--- linux-2.6.31.orig/drivers/net/wireless/b43/main.c	2009-10-01 16:17:00.000000000 +0800
+++ linux-2.6.31/drivers/net/wireless/b43/main.c	2009-10-01 16:37:41.000000000 +0800
@@ -4993,11 +4993,13 @@  static void b43_remove(struct ssb_device
 		ieee80211_unregister_hw(wl->hw);
 	}
 
+	if (list_is_last(&wldev->list, &wl->devlist))
+		b43_leds_unregister(wldev);
+
 	b43_one_core_detach(dev);
 
 	if (list_empty(&wl->devlist)) {
 		b43_rng_exit(wl);
-		b43_leds_unregister(wldev);
 		/* Last core on the chip unregistered.
 		 * We can destroy common struct b43_wl.
 		 */