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b43: Fix oops on unload when firmware not found

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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 2d838bb608 fixed the same problem
for b43legacy.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Tested-by: Markus Kanet <dvmailing@gmx.eu>
Cc: Stable <stable@vger.kernel.org> [V3.3.0+ (the patch will need to be refactored)]
Cc: Markus Kanet <dvmailing@gmx.eu>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Larry Finger 2012-10-24 08:57:16 -05:00 committed by John W. Linville
parent 6fcf2b1053
commit f89ff6441d
1 changed files with 4 additions and 0 deletions
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4
drivers/net/wireless/b43/main.c
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@ -5404,6 +5404,8 @@ static void b43_bcma_remove(struct bcma_device *core)
cancel_work_sync(&wldev->restart_work); cancel_work_sync(&wldev->restart_work);
B43_WARN_ON(!wl); B43_WARN_ON(!wl);
if (!wldev->fw.ucode.data)
return; /* NULL if firmware never loaded */
if (wl->current_dev == wldev && wl->hw_registred) { if (wl->current_dev == wldev && wl->hw_registred) {
b43_leds_stop(wldev); b43_leds_stop(wldev);
ieee80211_unregister_hw(wl->hw); ieee80211_unregister_hw(wl->hw);
@ -5478,6 +5480,8 @@ static void b43_ssb_remove(struct ssb_device *sdev)
cancel_work_sync(&wldev->restart_work); cancel_work_sync(&wldev->restart_work);
B43_WARN_ON(!wl); B43_WARN_ON(!wl);
if (!wldev->fw.ucode.data)
return; /* NULL if firmware never loaded */
if (wl->current_dev == wldev && wl->hw_registred) { if (wl->current_dev == wldev && wl->hw_registred) {
b43_leds_stop(wldev); b43_leds_stop(wldev);
ieee80211_unregister_hw(wl->hw); ieee80211_unregister_hw(wl->hw);