From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Peter Chiu <chui-hao.chiu@mediatek.com>,
Felix Fietkau <nbd@nbd.name>, Sasha Levin <sashal@kernel.org>,
lorenzo.bianconi83@gmail.com, ryder.lee@mediatek.com,
kvalo@kernel.org, davem@davemloft.net, kuba@kernel.org,
matthias.bgg@gmail.com, linux-wireless@vger.kernel.org,
netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org
Subject: [PATCH AUTOSEL 5.15 130/188] mt76: mt7615: fix possible deadlock while mt7615_register_ext_phy()
Date: Mon, 17 Jan 2022 21:30:54 -0500 [thread overview]
Message-ID: <20220118023152.1948105-130-sashal@kernel.org> (raw)
In-Reply-To: <20220118023152.1948105-1-sashal@kernel.org>
From: Peter Chiu <chui-hao.chiu@mediatek.com>
[ Upstream commit 8c55516de3f9b76b9d9444e7890682ec2efc809f ]
ieee80211_register_hw() is called with rtnl_lock held, and this could be
caused lockdep from a work item that's on a workqueue that is flushed
with the rtnl held.
Move mt7615_register_ext_phy() outside the init_work().
Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/mediatek/mt76/mt7615/pci_init.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/pci_init.c b/drivers/net/wireless/mediatek/mt76/mt7615/pci_init.c
index a2465b49ecd0c..87b4aa52ee0f9 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/pci_init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/pci_init.c
@@ -28,8 +28,6 @@ static void mt7615_pci_init_work(struct work_struct *work)
return;
mt7615_init_work(dev);
- if (dev->dbdc_support)
- mt7615_register_ext_phy(dev);
}
static int mt7615_init_hardware(struct mt7615_dev *dev)
@@ -160,6 +158,12 @@ int mt7615_register_device(struct mt7615_dev *dev)
mt7615_init_txpower(dev, &dev->mphy.sband_2g.sband);
mt7615_init_txpower(dev, &dev->mphy.sband_5g.sband);
+ if (dev->dbdc_support) {
+ ret = mt7615_register_ext_phy(dev);
+ if (ret)
+ return ret;
+ }
+
return mt7615_init_debugfs(dev);
}
--
2.34.1
next prev parent reply other threads:[~2022-01-18 2:52 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20220118023152.1948105-1-sashal@kernel.org>
2022-01-18 2:28 ` [PATCH AUTOSEL 5.15 011/188] ar5523: Fix null-ptr-deref with unexpected WDCMSG_TARGET_START reply Sasha Levin
2022-01-18 2:29 ` [PATCH AUTOSEL 5.15 022/188] ath11k: Fix crash caused by uninitialized TX ring Sasha Levin
2022-01-18 2:29 ` [PATCH AUTOSEL 5.15 063/188] rtw88: add quirk to disable pci caps on HP 250 G7 Notebook PC Sasha Levin
2022-01-18 2:29 ` [PATCH AUTOSEL 5.15 064/188] mwifiex: Fix skb_over_panic in mwifiex_usb_recv() Sasha Levin
2022-01-18 2:29 ` [PATCH AUTOSEL 5.15 065/188] rsi: Fix use-after-free in rsi_rx_done_handler() Sasha Levin
2022-01-18 2:29 ` [PATCH AUTOSEL 5.15 066/188] rsi: Fix out-of-bounds read in rsi_read_pkt() Sasha Levin
2022-01-18 2:29 ` [PATCH AUTOSEL 5.15 067/188] ath11k: Avoid NULL ptr access during mgmt tx cleanup Sasha Levin
2022-01-18 2:30 ` [PATCH AUTOSEL 5.15 090/188] iwlwifi: mvm: synchronize with FW after multicast commands Sasha Levin
2022-01-18 2:30 ` [PATCH AUTOSEL 5.15 091/188] iwlwifi: mvm: avoid clearing a just saved session protection id Sasha Levin
2022-01-18 2:30 ` [PATCH AUTOSEL 5.15 094/188] ath11k: avoid deadlock by change ieee80211_queue_work for regd_update_work Sasha Levin
2022-01-18 2:30 ` [PATCH AUTOSEL 5.15 095/188] ath10k: Fix tx hanging Sasha Levin
2022-01-18 2:30 ` [PATCH AUTOSEL 5.15 102/188] ath11k: Avoid false DEADLOCK warning reported by lockdep Sasha Levin
2022-01-18 2:30 ` Sasha Levin [this message]
2022-01-18 2:30 ` [PATCH AUTOSEL 5.15 131/188] mt76: do not pass the received frame with decryption error Sasha Levin
2022-01-18 2:30 ` [PATCH AUTOSEL 5.15 132/188] mt76: mt7615: improve wmm index allocation Sasha Levin
2022-01-18 2:30 ` [PATCH AUTOSEL 5.15 133/188] ath9k_htc: fix NULL pointer dereference at ath9k_htc_rxep() Sasha Levin
2022-01-18 2:30 ` [PATCH AUTOSEL 5.15 134/188] ath9k_htc: fix NULL pointer dereference at ath9k_htc_tx_get_packet() Sasha Levin
2022-01-18 2:30 ` [PATCH AUTOSEL 5.15 135/188] ath9k: Fix out-of-bound memcpy in ath9k_hif_usb_rx_stream Sasha Levin
2022-01-18 2:31 ` [PATCH AUTOSEL 5.15 136/188] rtw88: 8822c: update rx settings to prevent potential hw deadlock Sasha Levin
2022-01-18 2:31 ` [PATCH AUTOSEL 5.15 138/188] iwlwifi: fix leaks/bad data after failed firmware load Sasha Levin
2022-01-18 2:31 ` [PATCH AUTOSEL 5.15 139/188] iwlwifi: remove module loading failure message Sasha Levin
2022-01-18 2:31 ` [PATCH AUTOSEL 5.15 140/188] iwlwifi: mvm: Fix calculation of frame length Sasha Levin
2022-01-18 2:31 ` [PATCH AUTOSEL 5.15 141/188] iwlwifi: mvm: fix AUX ROC removal Sasha Levin
2022-01-18 2:31 ` [PATCH AUTOSEL 5.15 142/188] iwlwifi: pcie: make sure prph_info is set when treating wakeup IRQ Sasha Levin
2022-01-18 2:31 ` [PATCH AUTOSEL 5.15 146/188] ath11k: Fix napi related hang Sasha Levin
2022-01-18 2:31 ` [PATCH AUTOSEL 5.15 167/188] mac80211: allow non-standard VHT MCS-10/11 Sasha Levin
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