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.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@xxxxxx>
---
Might also be good for stable
drivers/net/wireless/b43/main.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index 5634d9a..3849c25 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -4834,6 +4834,9 @@ static void b43_op_stop(struct ieee80211_hw *hw)
cancel_work_sync(&(wl->beacon_update_trigger));
mutex_lock(&wl->mutex);
+ if (!dev)
+ goto out_unlock;
+
if (b43_status(dev) >= B43_STAT_STARTED) {
dev = b43_wireless_core_stop(dev);
if (!dev)
--
1.7.2.5
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