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    Subject[PATCH 5.10 086/130] net: usb: lan78xx: lan78xx_phy_init(): use PHY_POLL instead of "0" if no IRQ is available
    Date
    From: Sven Schuchmann <schuchmann@schleissheimer.de>

    commit 817b653160db9852d5a0498a31f047e18ce27e5b upstream.

    On most systems request for IRQ 0 will fail, phylib will print an error message
    and fall back to polling. To fix this set the phydev->irq to PHY_POLL if no IRQ
    is available.

    Fixes: cc89c323a30e ("lan78xx: Use irq_domain for phy interrupt from USB Int. EP")
    Reviewed-by: Andrew Lunn <andrew@lunn.ch>
    Signed-off-by: Sven Schuchmann <schuchmann@schleissheimer.de>
    Signed-off-by: David S. Miller <davem@davemloft.net>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    drivers/net/usb/lan78xx.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/drivers/net/usb/lan78xx.c
    +++ b/drivers/net/usb/lan78xx.c
    @@ -2128,7 +2128,7 @@ static int lan78xx_phy_init(struct lan78
    if (dev->domain_data.phyirq > 0)
    phydev->irq = dev->domain_data.phyirq;
    else
    - phydev->irq = 0;
    + phydev->irq = PHY_POLL;
    netdev_dbg(dev->net, "phydev->irq = %d\n", phydev->irq);

    /* set to AUTOMDIX */

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