[PATCH ath-next 2/3] wifi: ath12k: fix regdomain update failure when adding interface

[Aditya Kumar Singh]

From: Baochen Qiang <quic_bqiang at quicinc.com>

Commit 4c546023d71a ("wifi: ath12k: update regulatory rules when interface
added"), introduced a call to ath12k_reg_handle_chan_list() during
interface addition to update the regulatory domain based on the interface
type. While this works initially, subsequent updates (e.g., after an
interface delete/re-add cycle) fail because ah->regd_updated is never
reset.

To address this, reset ah->regd_updated before calling
ath12k_reg_handle_chan_list() to allow the update to proceed.

However, this change exposes another issue: a timeout occurs when waiting
for the 11D scan to complete, as seen in the log:
    ath12k_pci 0000:05:00.0: failed to receive 11d scan complete: timed out

This happens because during interface down, ar->state_11d is set to
ATH12K_11D_PREPARING, and during interface up, the host waits for
ar->completed_11d_scan even though the scan hasn't started yet.

Fix this by updating the wait condition to check for ATH12K_11D_RUNNING,
which is the only state where a scan complete event is expected.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.1.c5-00284-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1

Fixes: 4c546023d71a ("wifi: ath12k: update regulatory rules when interface added")
Signed-off-by: Baochen Qiang <quic_bqiang at quicinc.com>
Signed-off-by: Aditya Kumar Singh <aditya.kumar.singh at oss.qualcomm.com>
---
 drivers/net/wireless/ath/ath12k/mac.c | 1 +
 drivers/net/wireless/ath/ath12k/reg.c | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index 81ff32d2ce5afce582b78c17fbdf5082e4394798..755546246915cb355fc6f40fef85a87b880e2f91 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -8833,6 +8833,7 @@ static int ath12k_mac_op_add_interface(struct ieee80211_hw *hw,
 		ab = ar->ab;
 		reg_info = ab->reg_info[ar->pdev_idx];
 		ath12k_dbg(ab, ATH12K_DBG_MAC, "interface added to change reg rules\n");
+		ah->regd_updated = false;
 		ath12k_reg_handle_chan_list(ab, reg_info, ahvif->vdev_type,
 					    IEEE80211_REG_UNSET_AP);
 		break;
diff --git a/drivers/net/wireless/ath/ath12k/reg.c b/drivers/net/wireless/ath/ath12k/reg.c
index 2134e72e0812b2a0bdc537ace456ef7af1db0726..2598b39d5d7ee9b24ad8ed5d6de1bc5bbc6554e0 100644
--- a/drivers/net/wireless/ath/ath12k/reg.c
+++ b/drivers/net/wireless/ath/ath12k/reg.c
@@ -139,7 +139,7 @@ int ath12k_reg_update_chan_list(struct ath12k *ar, bool wait)
 	int num_channels = 0;
 	int i, ret, left;
 
-	if (wait && ar->state_11d != ATH12K_11D_IDLE) {
+	if (wait && ar->state_11d == ATH12K_11D_RUNNING) {
 		left = wait_for_completion_timeout(&ar->completed_11d_scan,
 						   ATH12K_SCAN_TIMEOUT_HZ);
 		if (!left) {

-- 
2.34.1