Commit ccde8a45 authored by Guennadi Liakhovetski's avatar Guennadi Liakhovetski Committed by John W. Linville
Browse files

wireless: b43: fix Oops on card eject during transfer 



An Oops has once been observed, when the SDIO card had been ejected during
IO. The PC value shows, that the dev pointer in b43_op_stop() was NULL.

(I moved the NULL check before the lock, based upon a suggestion from
Julian Calaby <julian.calaby@gmail.com>. -- JWL)

Signed-off-by: default avatarGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 09946950

drivers/net/wireless/b43/main.c

+4 −1
Original line number Diff line number Diff line
@@ -4852,6 +4852,9 @@ static void b43_op_stop(struct ieee80211_hw *hw) 


	cancel_work_sync(&(wl->beacon_update_trigger));



	if (!dev)

		goto out;



	mutex_lock(&wl->mutex);

	if (b43_status(dev) >= B43_STAT_STARTED) {

		dev = b43_wireless_core_stop(dev);
@@ -4863,7 +4866,7 @@ static void b43_op_stop(struct ieee80211_hw *hw) 


out_unlock:

	mutex_unlock(&wl->mutex);



out:

	cancel_work_sync(&(wl->txpower_adjust_work));

}