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net: stmmac: mdio: clean up c22/c45 accessor split

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The C45 accessors were setting the GR (register number) field twice,
once with the 16-bit register address truncated to five bits, and
then overwritten with the C45 devad. This is harmless since the field
was being cleared prior to being updated with the C45 devad, except
for the extra work.

Remove the redundant code.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/E1urGBn-00000000DCH-3swS@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Russell King (Oracle)
2025-08-27 14:27:47 +01:00
committed by Jakub Kicinski
parent 5309dbc95b
commit 24eb86a817
1 changed files with 0 additions and 4 deletions
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4
drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
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@@ -311,12 +311,10 @@ static int stmmac_mdio_read_c45(struct mii_bus *bus, int phyaddr, int devad,
value |= (phyaddr << priv->hw->mii.addr_shift)
& priv->hw->mii.addr_mask;
value |= (phyreg << priv->hw->mii.reg_shift) & priv->hw->mii.reg_mask;
value |= (priv->clk_csr << priv->hw->mii.clk_csr_shift)
& priv->hw->mii.clk_csr_mask;
value |= MII_GMAC4_READ;
value |= MII_GMAC4_C45E;
value &= ~priv->hw->mii.reg_mask;
value |= (devad << priv->hw->mii.reg_shift) & priv->hw->mii.reg_mask;
data |= phyreg << MII_GMAC4_REG_ADDR_SHIFT;
@@ -409,14 +407,12 @@ static int stmmac_mdio_write_c45(struct mii_bus *bus, int phyaddr,
value |= (phyaddr << priv->hw->mii.addr_shift)
& priv->hw->mii.addr_mask;
value |= (phyreg << priv->hw->mii.reg_shift) & priv->hw->mii.reg_mask;
value |= (priv->clk_csr << priv->hw->mii.clk_csr_shift)
& priv->hw->mii.clk_csr_mask;
value |= MII_GMAC4_WRITE;
value |= MII_GMAC4_C45E;
value &= ~priv->hw->mii.reg_mask;
value |= (devad << priv->hw->mii.reg_shift) & priv->hw->mii.reg_mask;
data |= phyreg << MII_GMAC4_REG_ADDR_SHIFT;