4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Bjorn Andersson bjorn.andersson@linaro.org
[ Upstream commit d53628882255481b710641dd0118fbd80af6e983 ]
ieee80211_unregister_hw() might invoke operations to stop the interface, that uses the hal_mutex. So don't destroy it until after we're done using it.
Signed-off-by: Bjorn Andersson bjorn.andersson@linaro.org Signed-off-by: Kalle Valo kvalo@qca.qualcomm.com Signed-off-by: Sasha Levin alexander.levin@verizon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/wireless/ath/wcn36xx/main.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/net/wireless/ath/wcn36xx/main.c +++ b/drivers/net/wireless/ath/wcn36xx/main.c @@ -1165,11 +1165,12 @@ static int wcn36xx_remove(struct platfor wcn36xx_dbg(WCN36XX_DBG_MAC, "platform remove\n");
release_firmware(wcn->nv); - mutex_destroy(&wcn->hal_mutex);
ieee80211_unregister_hw(hw); iounmap(wcn->dxe_base); iounmap(wcn->ccu_base); + + mutex_destroy(&wcn->hal_mutex); ieee80211_free_hw(hw);
return 0;