From 70656b45467ce09b9938e9b2e06442c853ba9e63 Mon Sep 17 00:00:00 2001 From: Lorenzo Bianconi Date: Fri, 14 Nov 2025 14:16:23 +0100 Subject: [PATCH] wifi: mt76: Move mt76_abort_scan out of mt76_reset_device() [ Upstream commit 6aaaaeacf18b2dc2b0f78f241800e0ea680938c7 ] Move mt76_abort_scan routine out of mt76_reset_device() in order to avoid a possible deadlock since mt76_reset_device routine is running with mt76 mutex help and mt76_abort_scan_complete() can grab mt76 mutex in some cases. Fixes: b36d55610215a ("wifi: mt76: abort scan/roc on hw restart") Signed-off-by: Lorenzo Bianconi Tested-by: Ben Greear Link: https://patch.msgid.link/20251114-mt76-fix-missing-mtx-v1-3-259ebf11f654@kernel.org Signed-off-by: Felix Fietkau Signed-off-by: Sasha Levin --- drivers/net/wireless/mediatek/mt76/mac80211.c | 2 -- drivers/net/wireless/mediatek/mt76/mt7915/mac.c | 2 ++ drivers/net/wireless/mediatek/mt76/mt7996/mac.c | 2 ++ 3 files changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mac80211.c b/drivers/net/wireless/mediatek/mt76/mac80211.c index 5ceaf78c9ea0..5e75861bf6f9 100644 --- a/drivers/net/wireless/mediatek/mt76/mac80211.c +++ b/drivers/net/wireless/mediatek/mt76/mac80211.c @@ -847,8 +847,6 @@ void mt76_reset_device(struct mt76_dev *dev) } rcu_read_unlock(); - mt76_abort_scan(dev); - INIT_LIST_HEAD(&dev->wcid_list); INIT_LIST_HEAD(&dev->sta_poll_list); dev->vif_mask = 0; diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c index 1c0d310146d6..5caf818e8283 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c @@ -1451,6 +1451,8 @@ mt7915_mac_full_reset(struct mt7915_dev *dev) if (ext_phy) cancel_delayed_work_sync(&ext_phy->mac_work); + mt76_abort_scan(&dev->mt76); + mutex_lock(&dev->mt76.mutex); for (i = 0; i < 10; i++) { if (!mt7915_mac_restart(dev)) diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c index b06728a98a69..cfad46a532bb 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c @@ -2424,6 +2424,8 @@ mt7996_mac_full_reset(struct mt7996_dev *dev) mt7996_for_each_phy(dev, phy) cancel_delayed_work_sync(&phy->mt76->mac_work); + mt76_abort_scan(&dev->mt76); + mutex_lock(&dev->mt76.mutex); for (i = 0; i < 10; i++) { if (!mt7996_mac_restart(dev))