[PATCH net-next 1/5] net: stmmac: dwc-qos-eth: move MDIO bus locking into stmmac_mdio

[Maxime Chevallier]

> Rather than dwc-qos-eth manipulating the MDIO bus lock directly, add
> helpers to the stmmac MDIO layer and use them in dwc-qos-eth. This
> improves my commit 87f43e6f06a2 ("net: stmmac: dwc-qos: calibrate tegra
> with mdio bus idle").
> 
> Signed-off-by: Russell King (Oracle) <rmk+kernel at armlinux.org.uk>

Reviewed-by: Maxime Chevallier <maxime.chevallier at bootlin.com>