diff options
| author | Wen Gong <wgong@codeaurora.org> | 2020-09-08 04:13:06 +0000 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2020-12-12 06:38:12 +0200 |
| commit | 5dadbe4e3718fb2214199b6dc7af1077fe14bf32 (patch) | |
| tree | ef32406fe31b58f5ed3d02047fb9274a983665f9 /drivers/net/wireless/ath/ath10k/mac.c | |
| parent | 2bc2b87bb35a4d7b022016819fc28ce9e2b13adc (diff) | |
ath10k: add atomic protection for device recovery
When it has more than one restart_work queued meanwhile, the 2nd
restart_work is very easy to break the 1st restart work and lead
recovery fail.
Add a flag to allow only one restart work running untill
device successfully recovered.
It already has flag ATH10K_FLAG_CRASH_FLUSH, but it can not use this
flag again, because it is clear in ath10k_core_start. The function
ieee80211_reconfig(called by ieee80211_restart_work) of mac80211 do
many things and drv_start(call to ath10k_core_start) is 1st thing,
when drv_start complete, it does not mean restart complete. So it
add new flag and clear it in ath10k_reconfig_complete, because it
is the last thing called from drv_reconfig_complete of function
ieee80211_reconfig, after it, the restart process finished.
Tested-on: QCA6174 hw3.2 SDIO WLAN.RMH.4.4.1-00049
Signed-off-by: Wen Gong <wgong@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/010101746bead6a0-d5e97c66-dedd-4b92-810e-c2e4840fafc9-000000@us-west-2.amazonses.com
Diffstat (limited to 'drivers/net/wireless/ath/ath10k/mac.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath10k/mac.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index dc32c7852a24..7d98250380ec 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -7932,6 +7932,7 @@ static void ath10k_reconfig_complete(struct ieee80211_hw *hw, ath10k_info(ar, "device successfully recovered\n"); ar->state = ATH10K_STATE_ON; ieee80211_wake_queues(ar->hw); + clear_bit(ATH10K_FLAG_RESTARTING, &ar->dev_flags); } mutex_unlock(&ar->conf_mutex); |