Re: [PATCH net v13 1/4] net: usb: lan78xx: register the PHY interrupt with the MDIO bus

[Andrew Lunn <andrew@lunn.ch>]

On Thu, Oct 01, 2026 at 04:02:33PM +0300, Aleksei Sviridkin wrote:
> The interrupt this driver maps for its PHY is written only into
> phydev->irq, while the bus table mdiobus->irq[] keeps reading PHY_POLL
> for the same address. That table is where phylib records what the bus
> described - phy_device_create() seeds phydev->irq from it - so the
> number lives only as long as nothing else writes that one field.
> 
> Copy the number into the table entry of the PHY this driver attaches,
> and into no other. The chip has one PHY interrupt, and on 7801
> phy_mask is 0, so other PHYs on the bus keep what the bus gave them.
> The address is known only after the scan, so the write to phydev->irq
> stays.
> 
> Found going through the drivers that keep a PHY interrupt outside the
> bus table, so that the restore on detach later in this series has a
> number to hand back here as well.
> 
> Assisted-by: LLM
> Signed-off-by: Aleksei Sviridkin <f@lex.la>

Reviewed-by: Andrew Lunn <andrew@lunn.ch>

    Andrew