[PATCH net v8 2/4] net: usb: smsc95xx: register the PHY interrupt with the MDIO bus

[Aleksei Sviridkin]

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.

The bus is the one this function registered a few lines earlier, so
record the number there as well.

Assisted-by: LLM
Signed-off-by: Aleksei Sviridkin <f@xxxxxx>
---

Notes:
    Compile-tested only; I have no LAN95xx device.
    
    No Fixes: tag, for the same reason as patch 1: the write has no reader until
    patch 3 lands.
    
    Teardown order keeps the number live for as long as it is read:
    smsc95xx_unbind() disconnects the PHY before it disposes the interrupt
    mapping.

 drivers/net/usb/smsc95xx.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c
index 42e4048b574b..130a460c1f54 100644
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c
@@ -1252,6 +1252,7 @@ static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf)
 		goto unregister_mdio;
 	}
 
+	pdata->mdiobus->irq[pdata->phydev->mdio.addr] = phy_irq;
 	pdata->phydev->irq = phy_irq;
 	pdata->phydev->is_internal = pdata->is_internal_phy;
 
-- 
2.53.0