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ath6kl: Fix race in heart beat polling 

Make sure to cancel heart beat timer before
freeing wmi to avoid potential NULL pointer
dereference.

Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Vasanthakumar Thiagarajan 2013-06-20 12:47:20 +05:30 committed by Kalle Valo
parent 8cc8df906f
commit f32036e823
1 changed files with 3 additions and 0 deletions
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3
drivers/net/wireless/ath/ath6kl/init.c
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@ -1836,6 +1836,9 @@ void ath6kl_stop_txrx(struct ath6kl *ar)
clear_bit(WMI_READY, &ar->flag);
if (ar->fw_recovery.enable)
del_timer_sync(&ar->fw_recovery.hb_timer);
/*
* After wmi_shudown all WMI events will be dropped. We
* need to cleanup the buffers allocated in AP mode and