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From: Sean Wang <sean.wang@kernel.org>
To: nbd@nbd.name, lorenzo.bianconi@redhat.com
Cc: linux-wireless@vger.kernel.org,
	linux-mediatek@lists.infradead.org,
	Sean Wang <sean.wang@mediatek.com>
Subject: [PATCH 11/19] wifi: mt76: mt7925: resolve link after acquiring mt76 mutex
Date: Fri,  6 Mar 2026 17:22:30 -0600	[thread overview]
Message-ID: <20260306232238.2039675-12-sean.wang@kernel.org> (raw)
In-Reply-To: <20260306232238.2039675-1-sean.wang@kernel.org>

From: Sean Wang <sean.wang@mediatek.com>

mt792x_sta_to_link() uses rcu_dereference_protected() and therefore
expects mt76.mutex to be held. Move the lookup after
mt792x_mutex_acquire() to make the locking explicit and correct.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
---
 drivers/net/wireless/mediatek/mt76/mt7925/main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/main.c b/drivers/net/wireless/mediatek/mt76/mt7925/main.c
index 68f168a093f2..135a803b4382 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/main.c
@@ -1071,11 +1071,11 @@ static void mt7925_mac_link_sta_assoc(struct mt76_dev *mdev,
 	struct mt792x_link_sta *mlink;
 	struct mt792x_sta *msta;
 
+	mt792x_mutex_acquire(dev);
+
 	msta = (struct mt792x_sta *)link_sta->sta->drv_priv;
 	mlink = mt792x_sta_to_link(msta, link_sta->link_id);
 
-	mt792x_mutex_acquire(dev);
-
 	if (ieee80211_vif_is_mld(vif)) {
 		link_conf = mt792x_vif_to_bss_conf(vif, msta->deflink_id);
 	} else {
-- 
2.43.0


  parent reply	other threads:[~2026-03-06 23:23 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-06 23:22 [PATCH 00/19] wifi: mt76: mt7925: fix up MLO link lifetime and error handling Sean Wang
2026-03-06 23:22 ` [PATCH 01/19] wifi: mt76: mt7925: pass mlink to sta_amsdu_tlv() Sean Wang
2026-03-06 23:22 ` [PATCH 02/19] wifi: mt76: mt7925: pass WCID indices to bss_basic_tlv() Sean Wang
2026-03-07 13:45   ` kernel test robot
2026-03-07 17:59   ` kernel test robot
2026-03-06 23:22 ` [PATCH 03/19] wifi: mt76: mt7925: pass mlink and mconf to sta_mld_tlv() Sean Wang
2026-03-06 23:22 ` [PATCH 04/19] wifi: mt76: mt7925: pass mlink to mcu_sta_update() Sean Wang
2026-03-06 23:22 ` [PATCH 05/19] wifi: mt76: mt7925: resolve primary mlink via def_wcid Sean Wang
2026-03-06 23:22 ` [PATCH 06/19] wifi: mt76: mt7925: pass mlink to mac_link_sta_remove() Sean Wang
2026-03-06 23:22 ` [PATCH 07/19] wifi: mt76: mt7925: pass mlink to sta_hdr_trans_tlv() Sean Wang
2026-03-06 23:22 ` [PATCH 08/19] wifi: mt76: mt7925: validate mlink in sta_hdr_trans_tlv() Sean Wang
2026-03-06 23:22 ` [PATCH 09/19] wifi: mt76: mt7925: pass mlink to wtbl_update_hdr_trans() Sean Wang
2026-03-06 23:22 ` [PATCH 10/19] wifi: mt76: mt7925: pass mlink to set_link_key() Sean Wang
2026-03-06 23:22 ` Sean Wang [this message]
2026-03-06 23:22 ` [PATCH 12/19] wifi: mt76: mt7925: pass mconf and mlink to wtbl_update_hdr_trans() Sean Wang
2026-03-06 23:22 ` [PATCH 13/19] wifi: mt76: mt7925: make WCID cleanup unconditional in sta_remove_links() Sean Wang
2026-03-06 23:22 ` [PATCH 14/19] wifi: mt76: mt7925: unwind WCID setup on link STA add failure Sean Wang
2026-03-06 23:22 ` [PATCH 15/19] wifi: mt76: mt7925: drop WCID reinit after publish Sean Wang
2026-03-06 23:22 ` [PATCH 16/19] wifi: mt76: mt7925: move WCID teardown into link_sta_remove() Sean Wang
2026-03-06 23:22 ` [PATCH 17/19] wifi: mt76: mt7925: switch link STA allocation to RCU lifetime Sean Wang
2026-03-06 23:22 ` [PATCH 18/19] wifi: mt76: mt7925: publish msta->link after successful link add Sean Wang
2026-03-06 23:22 ` [PATCH 19/19] wifi: mt76: mt7925: host-only unwind published links on add failure Sean Wang

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