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From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
To: Andrew Lunn <andrew@lunn.ch>, Heiner Kallweit <hkallweit1@gmail.com>
Cc: Jijie Shao <shaojijie@huawei.com>,
	shaojijie@huawei.com, shenjian15@huawei.com,
	liuyonglong@huawei.com, wangjie125@huawei.com,
	chenhao418@huawei.com, lanhao@huawei.com,
	wangpeiyang1@huawei.com, "David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	netdev@vger.kernel.org
Subject: [PATCH RFC net-next 2/7] net: phy: call phy_error_precise() while holding the lock
Date: Fri, 08 Sep 2023 12:20:50 +0100	[thread overview]
Message-ID: <E1qeZXe-007G4J-CU@rmk-PC.armlinux.org.uk> (raw)
In-Reply-To: <ZPsDdqt1RrXB+aTO@shell.armlinux.org.uk>

Move the locking out of phy_error_precise() and to its only call site,
merging with the locked region that has already been taken.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
---
 drivers/net/phy/phy.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index 1e5218935eb3..990d387b31bd 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -1231,9 +1231,7 @@ static void phy_error_precise(struct phy_device *phydev,
 			      const void *func, int err)
 {
 	WARN(1, "%pS: returned: %d\n", func, err);
-	mutex_lock(&phydev->lock);
 	phy_process_error(phydev);
-	mutex_unlock(&phydev->lock);
 }
 
 /**
@@ -1503,10 +1501,10 @@ void phy_state_machine(struct work_struct *work)
 	if (err == -ENODEV)
 		return;
 
+	mutex_lock(&phydev->lock);
 	if (err < 0)
 		phy_error_precise(phydev, func, err);
 
-	mutex_lock(&phydev->lock);
 	phy_process_state_change(phydev, old_state);
 
 	/* Only re-schedule a PHY state machine change if we are polling the
-- 
2.30.2


  parent reply	other threads:[~2023-09-08 11:21 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-09-08 11:20 [PATCH RFC net-next 0/7] net: phy: avoid race when erroring stopping PHY Russell King (Oracle)
2023-09-08 11:20 ` [PATCH RFC net-next 1/7] net: phy: always call phy_process_state_change() under lock Russell King (Oracle)
2023-09-08 11:20 ` Russell King (Oracle) [this message]
2023-09-08 11:20 ` [PATCH RFC net-next 3/7] net: phy: move call to start aneg Russell King (Oracle)
2023-09-08 11:21 ` [PATCH RFC net-next 4/7] net: phy: move phy_suspend() to end of phy_state_machine() Russell King (Oracle)
2023-09-08 11:21 ` [PATCH RFC net-next 5/7] net: phy: move phy_state_machine() Russell King (Oracle)
2023-09-08 11:21 ` [PATCH RFC net-next 6/7] net: phy: split locked and unlocked section of phy_state_machine() Russell King (Oracle)
2023-09-08 11:21 ` [PATCH RFC net-next 7/7] net: phy: convert phy_stop() to use split state machine Russell King (Oracle)
2023-09-11  8:54 ` [PATCH RFC net-next 0/7] net: phy: avoid race when erroring stopping PHY Russell King (Oracle)
2023-09-12  6:35   ` Jijie Shao

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