netdev - [PATCH net-next] net: phy: Deduplicate interrupt disablement on PHY attach

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Date:   Wed, 27 Apr 2022 08:30:51 +0200
From:   Lukas Wunner <lukas@...ner.de>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Russell King <linux@...linux.org.uk>
Cc:     netdev@...r.kernel.org
Subject: [PATCH net-next] net: phy: Deduplicate interrupt disablement on PHY
 attach

phy_attach_direct() first calls phy_init_hw() (which restores interrupt
settings through ->config_intr()), then calls phy_disable_interrupts().

So if phydev->interrupts was previously set to 1, interrupts are briefly
enabled, then disabled, which seems nonsensical.

If it was previously set to 0, interrupts are disabled twice, which is
equally nonsensical.

Deduplicate interrupt disablement.

Signed-off-by: Lukas Wunner <lukas@...ner.de>
---
 drivers/net/phy/phy_device.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index 8406ac739def..f867042b2eb4 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -1449,6 +1449,8 @@ int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
 
 	phydev->state = PHY_READY;
 
+	phydev->interrupts = PHY_INTERRUPT_DISABLED;
+
 	/* Port is set to PORT_TP by default and the actual PHY driver will set
 	 * it to different value depending on the PHY configuration. If we have
 	 * the generic PHY driver we can't figure it out, thus set the old
@@ -1471,10 +1473,6 @@ int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
 	if (err)
 		goto error;
 
-	err = phy_disable_interrupts(phydev);
-	if (err)
-		return err;
-
 	phy_resume(phydev);
 	phy_led_triggers_register(phydev);
 
-- 
2.35.2