From f89ff6441df06abc2d95f3ef67525923032d6283 Mon Sep 17 00:00:00 2001 From: Larry Finger Date: Wed, 24 Oct 2012 08:57:16 -0500 Subject: [PATCH] b43: Fix oops on unload when firmware not found When b43 fails to find firmware when loaded, a subsequent unload will oops due to calling ieee80211_unregister_hw() when the corresponding register call was never made. Commit 2d838bb608e2d1f6cb4280e76748cb812dc822e7 fixed the same problem for b43legacy. Signed-off-by: Larry Finger Tested-by: Markus Kanet Cc: Stable [V3.3.0+ (the patch will need to be refactored)] Cc: Markus Kanet Signed-off-by: John W. Linville --- drivers/net/wireless/b43/main.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c index 73730e94e0ac..c5a99c8c8168 100644 --- a/drivers/net/wireless/b43/main.c +++ b/drivers/net/wireless/b43/main.c @@ -5404,6 +5404,8 @@ static void b43_bcma_remove(struct bcma_device *core) cancel_work_sync(&wldev->restart_work); B43_WARN_ON(!wl); + if (!wldev->fw.ucode.data) + return; /* NULL if firmware never loaded */ if (wl->current_dev == wldev && wl->hw_registred) { b43_leds_stop(wldev); ieee80211_unregister_hw(wl->hw); @@ -5478,6 +5480,8 @@ static void b43_ssb_remove(struct ssb_device *sdev) cancel_work_sync(&wldev->restart_work); B43_WARN_ON(!wl); + if (!wldev->fw.ucode.data) + return; /* NULL if firmware never loaded */ if (wl->current_dev == wldev && wl->hw_registred) { b43_leds_stop(wldev); ieee80211_unregister_hw(wl->hw);