iwlwifi: fix kernel crash when unregistering thermal zone
authorJens Axboe <axboe@kernel.dk>
Tue, 17 Jan 2017 22:22:24 +0000 (14:22 -0800)
committerKalle Valo <kvalo@codeaurora.org>
Sat, 21 Jan 2017 12:58:37 +0000 (14:58 +0200)
commit92549cdc288f47f3a98cf80ac5890c91f5876a06
tree27a6e575a8374afac867038d69e21384d2b6ff61
parent7195439d1d71bc4a6c33cfb57bc669a7cd041041
iwlwifi: fix kernel crash when unregistering thermal zone

A recent firmware change seems to have enabled thermal zones on the
iwlwifi driver. Unfortunately, my device fails when registering the
thermal zone. This doesn't stop the driver from attempting to unregister
the thermal zone at unload time, triggering a NULL pointer deference in
strlen() off the thermal_zone_device_unregister() path.

Don't unregister if name is NULL, for that case we failed registering.
Do the same for the cooling zone.

Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
drivers/net/wireless/intel/iwlwifi/mvm/tt.c