[PATCH v2 5/5] wifi: mt76: mt7921: disable auto regd changes after user set

[JB Tsai <jb.tsai@mediatek.com>]

Add regd_user flag to block automatic regulatory domain updates
if set by user.

Co-developed-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: JB Tsai <jb.tsai@mediatek.com>
---
v2: no changes
---
 drivers/net/wireless/mediatek/mt76/mt7921/mcu.c  | 1 +
 drivers/net/wireless/mediatek/mt76/mt7921/regd.c | 7 ++++++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
index 3e605a9ab919..25b9437250f7 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
@@ -419,6 +419,7 @@ static int mt7921_load_clc(struct mt792x_dev *dev, const char *fw_name)
 	u8 *clc_base = NULL, hw_encap = 0;
 
 	dev->phy.clc_chan_conf = 0xff;
+	dev->regd_user = false;
 	if (!mt7921_regd_clc_supported(dev))
 		return 0;
 
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/regd.c b/drivers/net/wireless/mediatek/mt76/mt7921/regd.c
index 229aa59e60f3..f122e418d825 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/regd.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/regd.c
@@ -117,6 +117,10 @@ void mt7921_regd_notifier(struct wiphy *wiphy,
 	struct mt76_connac_pm *pm = &dev->pm;
 	struct mt76_dev *mdev = &dev->mt76;
 
+	if (req->initiator == NL80211_REGDOM_SET_BY_USER &&
+	    !dev->regd_user)
+		dev->regd_user = true;
+
 	/* do not need to update the same country twice */
 	if (!memcmp(req->alpha2, mdev->alpha2, 2) &&
 	    dev->country_ie_env == req->country_ie_env)
@@ -168,7 +172,8 @@ int mt7921_regd_change(struct mt792x_phy *phy, char *alpha2)
 		return 0;
 
 	if (!mt7921_regd_is_valid_alpha2(alpha2) ||
-	    !mt7921_regd_clc_supported(dev))
+	    !mt7921_regd_clc_supported(dev) ||
+	    dev->regd_user)
 		return -EINVAL;
 
 	if (mdev->alpha2[0] != '0' && mdev->alpha2[1] != '0')
-- 
2.43.0