ath6kl: Recover from fw crash
Re-initialize the target when fw crash is reported.
This would make the device functional again after
target crash. During the target re-initialization
it is made sure that target is not bugged with data/cmd
request, ar->state ATH6KL_STATE_RECOVERY is used
for this purpose.
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
diff --git a/drivers/net/wireless/ath/ath6kl/cfg80211.c b/drivers/net/wireless/ath/ath6kl/cfg80211.c
index b588786..8cf146b 100644
--- a/drivers/net/wireless/ath/ath6kl/cfg80211.c
+++ b/drivers/net/wireless/ath/ath6kl/cfg80211.c
@@ -2503,14 +2503,23 @@
{
struct ath6kl *ar = wiphy_priv(wiphy);
+ ath6kl_recovery_suspend(ar);
+
return ath6kl_hif_suspend(ar, wow);
}
static int __ath6kl_cfg80211_resume(struct wiphy *wiphy)
{
struct ath6kl *ar = wiphy_priv(wiphy);
+ int err;
- return ath6kl_hif_resume(ar);
+ err = ath6kl_hif_resume(ar);
+ if (err)
+ return err;
+
+ ar->fw_recovery.enable = true;
+
+ return 0;
}
/*
@@ -3434,6 +3443,10 @@
clear_bit(CONNECTED, &vif->flags);
clear_bit(CONNECT_PEND, &vif->flags);
+ /* Stop netdev queues, needed during recovery */
+ netif_stop_queue(vif->ndev);
+ netif_carrier_off(vif->ndev);
+
/* disable scanning */
if (ath6kl_wmi_scanparams_cmd(vif->ar->wmi, vif->fw_vif_idx, 0xFFFF,
0, 0, 0, 0, 0, 0, 0, 0, 0) != 0)
@@ -3447,7 +3460,7 @@
struct ath6kl_vif *vif;
vif = ath6kl_vif_first(ar);
- if (!vif) {
+ if (!vif && ar->state != ATH6KL_STATE_RECOVERY) {
/* save the current power mode before enabling power save */
ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode;