This is a note to let you know that I've just added the patch titled
net: phy: avoid genphy_aneg_done() for PHYs without clause 22 support
to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: net-phy-avoid-genphy_aneg_done-for-phys-without-clause-22-support.patch and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From foo@baz Mon Apr 9 17:09:24 CEST 2018
From: Russell King rmk+kernel@armlinux.org.uk Date: Mon, 5 Jun 2017 12:22:55 +0100 Subject: net: phy: avoid genphy_aneg_done() for PHYs without clause 22 support
From: Russell King rmk+kernel@armlinux.org.uk
[ Upstream commit 41408ad519f7a2a1c5229e61f2a97f4df1b61adc ]
Avoid calling genphy_aneg_done() for PHYs that do not implement the Clause 22 register set.
Clause 45 PHYs may implement the Clause 22 register set along with the Clause 22 extension MMD. Hence, we can't simply block access to the Clause 22 functions based on the PHY being a Clause 45 PHY.
Signed-off-by: Russell King rmk+kernel@armlinux.org.uk Reviewed-by: Andrew Lunn andrew@lunn.ch Reviewed-by: Florian Fainelli f.fainelli@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/phy/phy.c | 6 ++++++ 1 file changed, 6 insertions(+)
--- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -148,6 +148,12 @@ static inline int phy_aneg_done(struct p if (phydev->drv->aneg_done) return phydev->drv->aneg_done(phydev);
+ /* Avoid genphy_aneg_done() if the Clause 45 PHY does not + * implement Clause 22 registers + */ + if (phydev->is_c45 && !(phydev->c45_ids.devices_in_package & BIT(0))) + return -EINVAL; + return genphy_aneg_done(phydev); }
Patches currently in stable-queue which might be from rmk+kernel@armlinux.org.uk are
queue-4.9/net-phy-avoid-genphy_aneg_done-for-phys-without-clause-22-support.patch