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Message-Id: <20230817150644.3605105-6-vladimir.oltean@nxp.com>
Date: Thu, 17 Aug 2023 18:06:41 +0300
From: Vladimir Oltean <vladimir.oltean@....com>
To: netdev@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-phy@...ts.infradead.org
Cc: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>,
Heiner Kallweit <hkallweit1@...il.com>,
Andrew Lunn <andrew@...n.ch>,
Florian Fainelli <f.fainelli@...il.com>,
Madalin Bucur <madalin.bucur@....com>,
Ioana Ciornei <ioana.ciornei@....com>,
Camelia Groza <camelia.groza@....com>,
Li Yang <leoyang.li@....com>, Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor@...nel.org>,
Sean Anderson <sean.anderson@...o.com>,
Maxime Chevallier <maxime.chevallier@...tlin.com>,
Vinod Koul <vkoul@...nel.org>,
Kishon Vijay Abraham I <kishon@...nel.org>
Subject: [RFC PATCH net-next 5/8] net: phy: balance calls to ->suspend() and ->resume()
Some future PHY drivers will need to do balanced stuff in these methods,
like phy_power_off() and phy_power_on(). Currently ->resume() is called
twice during initialization, leading to phy_power_off() not actually
doing anything during ->suspend() because the refcount in the generic
PHY core remains elevated.
Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
---
drivers/net/phy/phy_device.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index 17cb3e07216a..9cb5aa04b2b5 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -1882,7 +1882,7 @@ int __phy_resume(struct phy_device *phydev)
lockdep_assert_held(&phydev->lock);
- if (!phydrv || !phydrv->resume)
+ if (!phydrv || !phydrv->resume || !phydev->suspended)
return 0;
ret = phydrv->resume(phydev);
@@ -3275,6 +3275,8 @@ static int phy_probe(struct device *dev)
if (phydrv->flags & PHY_IS_INTERNAL)
phydev->is_internal = true;
+ phydev->suspended = true;
+
/* Deassert the reset signal */
phy_device_reset(phydev, 0);
--
2.34.1
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