linux-stable.git/drivers/net/phy, branch v6.6.145

net: phy: sfp: free mii_bus in sfp_i2c_mdiobus_destroy

2026-07-24T14:03:24+00:00

[ Upstream commit 8f31efff9206f9f0adb853cad6916086aac4d5ef ]

sfp_i2c_mdiobus_create() allocates the I2C MDIO bus with mdio_i2c_alloc(),
a plain (non-devm) allocation, and registers it. sfp_i2c_mdiobus_destroy()
only unregisters the bus and clears sfp->i2c_mii without calling
mdiobus_free(). As the only reference to the bus is then cleared, the
struct mii_bus is leaked.

This is hit whenever a copper/RollBall SFP module that instantiated an MDIO
bus is removed: sfp_sm_main() takes the global teardown path and calls
sfp_i2c_mdiobus_destroy(). sfp_cleanup(), on driver unbind, frees
sfp->i2c_mii directly, which is why the leak only triggered on module
hot-removal and not on unbind.

Free the bus in sfp_i2c_mdiobus_destroy() to match the allocation done in
sfp_i2c_mdiobus_create().

Fixes: e85b1347ace6 ("net: sfp: create/destroy I2C mdiobus before PHY probe/after PHY release")
Signed-off-by: Petr Wozniak 
Reviewed-by: Maxime Chevallier 
Reviewed-by: Larysa Zaremba 
Link: https://patch.msgid.link/312bde8176fc429aa89524e3be250137f034ba84.1782581445.git.petr.wozniak@gmail.com
Signed-off-by: Jakub Kicinski 
Signed-off-by: Sasha Levin

net: phy: clean the sfp upstream if phy probing fails

2026-06-19T11:39:29+00:00

[ Upstream commit 48774e87bbaa0056819d4b52301e4692e50e3252 ]

Sashiko reported that we don't call sfp_bus_del_upstream() in the probe
failure path, so let's add it, otherwise the sfp-bus is left with a
dangling 'upstream' field, that may be used later on during SFP events.

This issue existed before the generic phylib sfp support, back when
drivers were calling phy_sfp_probe themselves.

Reviewed-by: Nicolai Buchwitz 
Fixes: 298e54fa810e ("net: phy: add core phylib sfp support")
Signed-off-by: Maxime Chevallier 
Link: https://patch.msgid.link/20260604092819.723505-2-maxime.chevallier@bootlin.com
Signed-off-by: Jakub Kicinski 
Signed-off-by: Sasha Levin

phy: mscc: Use PHY_ID_MATCH_EXACT for VSC8584, VSC8582, VSC8575, VSC856X

2026-06-19T11:39:14+00:00

[ Upstream commit 1bc80d673087e5704adbb3ee8e4b785c14899cce ]

As the PHYs VSC8584, VSC8582, VSC8575 and VSC856X exists only as rev B,
we can use PHY_ID_MATCH_EXACT to match exactly on revision B of the PHY.
Because of this change then there is not need the check if it is a
different revision than rev B in the function vsc8584_probe() as we
already know that this will never happen.
These changes are a preparation for the next patch because in that patch
we will make the PHYs VSC8574 and VSC8572 to use vsc8584_probe() and
these PHYs have multiple revision.

Reviewed-by: Maxime Chevallier 
Signed-off-by: Horatiu Vultur 
Link: https://patch.msgid.link/20251023191350.190940-2-horatiu.vultur@microchip.com
Signed-off-by: Jakub Kicinski 
Signed-off-by: Sasha Levin

net: phy: DP83TC811: add reading of abilities

2026-06-01T15:43:13+00:00

[ Upstream commit c78bdba7b9666020c0832150a4fc4c0aebc7c6ac ]

At this time the driver is not listing any speeds
it supports. This should be ETHTOOL_LINK_MODE_100baseT1_Full_BIT
for DP83TC811. Add the missing call for phylib to read the abilities.

Fixes: b753a9faaf9a ("net: phy: DP83TC811: Introduce support for the DP83TC811 phy")
Suggested-by: Andrew Lunn 
Signed-off-by: Sven Schuchmann 
Reviewed-by: Andrew Lunn 
Link: https://patch.msgid.link/20260512071949.6218-1-schuchmann@schleissheimer.de
[pabeni@redhat.com: dropped revision history]
Signed-off-by: Paolo Abeni 
Signed-off-by: Sasha Levin

net: phy: c45: add genphy_c45_pma_read_ext_abilities() function

2026-06-01T15:43:13+00:00

[ Upstream commit 0c476157085fe2ad13b9bec70ea672e86647fa1a ]

Move part of the genphy_c45_pma_read_abilities() code to a separate
function.

Some PHYs do not implement PMA/PMD status 2 register (Register 1.8) but
do implement PMA/PMD extended ability register (Register 1.11). To make
use of it, we need to be able to access this part of code separately.

Signed-off-by: Oleksij Rempel 
Reviewed-by: Andrew Lunn 
Reviewed-by: Russell King (Oracle) 
Link: https://lore.kernel.org/r/20231212054144.87527-2-o.rempel@pengutronix.de
Signed-off-by: Jakub Kicinski 
Stable-dep-of: c78bdba7b966 ("net: phy: DP83TC811: add reading of abilities")
Signed-off-by: Sasha Levin

net: phy: dp83869: fix setting CLK_O_SEL field.

2026-05-23T11:03:29+00:00

[ Upstream commit 46f74a3f7d57d9cc0110b09cbc8163fa0a01afa2 ]

Table 7-121 in datasheet says we have to set register 0xc6
to value 0x10 before CLK_O_SEL can be modified. No more infos
about this field found in datasheet. With this fix, setting
of CLK_O_SEL field in IO_MUX_CFG register worked through dts
property "ti,clk-output-sel" on a DP83869HMRGZR.

Signed-off-by: Heiko Schocher 
Reviewed-by: Simon Horman 
Fixes: 01db923e8377 ("net: phy: dp83869: Add TI dp83869 phy")
Link: https://patch.msgid.link/20260425031339.3318-1-hs@nabladev.com
Signed-off-by: Paolo Abeni 
Signed-off-by: Sasha Levin

net: phy: qcom: at803x: Use the correct bit to disable extended next page

2026-05-23T11:03:10+00:00

[ Upstream commit e7a62edd34b1b4bc5f979988efc2f81c075733fd ]

As noted in the blamed commit, the AR8035 and other PHYs from this
family advertise the Extended Next Page support by default, which may be
understood by some partners as this PHY being multi-gig capable.

The fix is to disable XNP advertising, which is done by setting bit 12
of the Auto-Negotiation Advertisement Register (MII_ADVERTISE).

The blamed commit incorrectly uses MDIO_AN_CTRL1_XNP, which is bit 13 as per
802.3 : 45.2.7.1 AN control register (Register 7.0)

BIT 12 in MII_ADVERTISE is wrapped by ADVERTISE_RESV, used by some
drivers such as the aquantia one. 802.3 Clause 28 defines bit 12 as
Extended Next Page ability, at least in recent versions of the standard.

Let's add a define for it and use it in the at803x driver.

Fixes: 3c51fa5d2afe ("net: phy: ar803x: disable extended next page bit")
Signed-off-by: Maxime Chevallier 
Reviewed-by: Andrew Lunn 
Link: https://patch.msgid.link/20260410171021.1277138-1-maxime.chevallier@bootlin.com
Signed-off-by: Jakub Kicinski 
Signed-off-by: Sasha Levin

net: phy: move at803x PHY driver to dedicated directory

2026-05-23T11:03:09+00:00

[ Upstream commit 9e56ff53b4115875667760445b028357848b4748 ]

In preparation for addition of other Qcom PHY and to tidy things up,
move the at803x PHY driver to dedicated directory.

The same order in the Kconfig selection is saved.

Signed-off-by: Christian Marangi 
Reviewed-by: Andrew Lunn 
Link: https://lore.kernel.org/r/20240129141600.2592-2-ansuelsmth@gmail.com
Signed-off-by: Jakub Kicinski 
Stable-dep-of: e7a62edd34b1 ("net: phy: qcom: at803x: Use the correct bit to disable extended next page")
Signed-off-by: Sasha Levin

net: phy: add Rust Asix PHY driver

2026-05-23T11:03:09+00:00

[ Upstream commit cbe0e415089636170aa6eb540ca4af5dc9842a60 ]

This is the Rust implementation of drivers/net/phy/ax88796b.c. The
features are equivalent. You can choose C or Rust version kernel
configuration.

Signed-off-by: FUJITA Tomonori 
Reviewed-by: Trevor Gross 
Reviewed-by: Benno Lossin 
Reviewed-by: Andrew Lunn 
Reviewed-by: Alice Ryhl 
Signed-off-by: David S. Miller 
Stable-dep-of: e7a62edd34b1 ("net: phy: qcom: at803x: Use the correct bit to disable extended next page")
Signed-off-by: Sasha Levin

net: phy: aquantia: move to separate directory

2026-05-23T11:03:09+00:00

[ Upstream commit d2213db3f49bce8e7a87c8de05b9a091f78f654e ]

Move aquantia PHY driver to separate driectory in preparation for
firmware loading support to keep things tidy.

Signed-off-by: Christian Marangi 
Reviewed-by: Andrew Lunn 
Signed-off-by: David S. Miller 
Stable-dep-of: e7a62edd34b1 ("net: phy: qcom: at803x: Use the correct bit to disable extended next page")
Signed-off-by: Sasha Levin