From 817b653160db9852d5a0498a31f047e18ce27e5b Mon Sep 17 00:00:00 2001
From: Sven Schuchmann <schuchmann@schleissheimer.de>
Date: Sat, 27 Nov 2021 11:47:07 +0100
Subject: [PATCH] net: usb: lan78xx: lan78xx_phy_init(): use PHY_POLL instead
 of "0" if no IRQ is available
Git-commit: 817b653160db9852d5a0498a31f047e18ce27e5b
References: git-fixes
Patch-mainline: v5.16-rc4

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: Oliver Neukum <oneukum@suse.com>
---
 drivers/net/usb/lan78xx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
index f20376c1ef3f..8cd265fc1fd9 100644
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -2228,7 +2228,7 @@ static int lan78xx_phy_init(struct lan78xx_net *dev)
 	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 */
-- 
2.26.2