From 4ea03443ecdac6920eb7aa3a9da2cd0b8cc6dfc8 Mon Sep 17 00:00:00 2001
From: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
Date: Wed, 10 Nov 2021 21:05:57 +0530
Subject: [PATCH] ath11k: fix error routine when fallback of add interface fails
Git-commit: 4ea03443ecdac6920eb7aa3a9da2cd0b8cc6dfc8
Patch-mainline: v5.17-rc1
References: bsc#1206451

When there is an error in add interface process from
ath11k_mac_set_kickout(), the code attempts to handle a
fallback for add_interface. When this fallback succeeds, the
driver returns zero rather than error code. This leads to
success for the non created VAP. In cleanup, driver gets
remove interface callback for the non created VAP and
proceeds to self peer delete request which leads to FW assert.
Since it was already deleted on the fallback of add interface,
return the actual error code instead of fallback return code.

Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.5.0.1-00729-QCAHKSWPL_SILICONZ-3 v2

Signed-off-by: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1636558557-2874-1-git-send-email-quic_periyasa@quicinc.com
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/net/wireless/ath/ath11k/mac.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c
index b82910c3f5a5..5439a7918842 100644
--- a/drivers/net/wireless/ath/ath11k/mac.c
+++ b/drivers/net/wireless/ath/ath11k/mac.c
@@ -5613,7 +5613,7 @@ static int ath11k_mac_op_add_interface(struct ieee80211_hw *hw,
 	u32 param_id, param_value;
 	u16 nss;
 	int i;
-	int ret;
+	int ret, fbret;
 	int bit;
 
 	vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
@@ -5816,17 +5816,17 @@ static int ath11k_mac_op_add_interface(struct ieee80211_hw *hw,
 	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
 		reinit_completion(&ar->peer_delete_done);
 
-		ret = ath11k_wmi_send_peer_delete_cmd(ar, vif->addr,
-						      arvif->vdev_id);
-		if (ret) {
+		fbret = ath11k_wmi_send_peer_delete_cmd(ar, vif->addr,
+							arvif->vdev_id);
+		if (fbret) {
 			ath11k_warn(ar->ab, "failed to delete peer vdev_id %d addr %pM\n",
 				    arvif->vdev_id, vif->addr);
 			goto err;
 		}
 
-		ret = ath11k_wait_for_peer_delete_done(ar, arvif->vdev_id,
-						       vif->addr);
-		if (ret)
+		fbret = ath11k_wait_for_peer_delete_done(ar, arvif->vdev_id,
+							 vif->addr);
+		if (fbret)
 			goto err;
 
 		ar->num_peers--;
-- 
2.35.3