Messages in this thread | | | Date | Tue, 17 Oct 2023 09:37:38 -0700 | Subject | Re: [PATCH v2 net] net: mdio-mux: fix C45 access returning -EIO after API change | From | Florian Fainelli <> |
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On 10/17/23 07:31, Vladimir Oltean wrote: > The mii_bus API conversion to read_c45() and write_c45() did not cover > the mdio-mux driver before read() and write() were made C22-only. > > This broke arch/arm64/boot/dts/freescale/fsl-ls1028a-qds-13bb.dtso. > The -EOPNOTSUPP from mdiobus_c45_read() is transformed by > get_phy_c45_devs_in_pkg() into -EIO, is further propagated to > of_mdiobus_register() and this makes the mdio-mux driver fail to probe > the entire child buses, not just the PHYs that cause access errors. > > Fix the regression by introducing special c45 read and write accessors > to mdio-mux which forward the operation to the parent MDIO bus. > > Fixes: db1a63aed89c ("net: phy: Remove fallback to old C45 method") > Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com> -- Florian
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