4.9-stable review patch. If anyone has any objections, please let me know.
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From: Niklas Cassel niklas.cassel@linaro.org
[ Upstream commit 30549aab146ccb1275230c3b4b4bc6b4181fd54e ]
When building stmmac, it is only possible to select CONFIG_DWMAC_GENERIC, or any of the glue drivers, when CONFIG_STMMAC_PLATFORM is set. The only exception is CONFIG_STMMAC_PCI.
When calling of_mdiobus_register(), it will call our ->reset() callback, which is set to stmmac_mdio_reset().
Most of the code in stmmac_mdio_reset() is protected by a "#if defined(CONFIG_STMMAC_PLATFORM)", which will evaluate to false when CONFIG_STMMAC_PLATFORM=m.
Because of this, the phy reset gpio will only be pulled when stmmac is built as built-in, but not when built as modules.
Fix this by using "#if IS_ENABLED()" instead of "#if defined()".
Signed-off-by: Niklas Cassel niklas.cassel@linaro.org Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c @@ -216,7 +216,7 @@ static int stmmac_mdio_write_gmac4(struc */ int stmmac_mdio_reset(struct mii_bus *bus) { -#if defined(CONFIG_STMMAC_PLATFORM) +#if IS_ENABLED(CONFIG_STMMAC_PLATFORM) struct net_device *ndev = bus->priv; struct stmmac_priv *priv = netdev_priv(ndev); unsigned int mii_address = priv->hw->mii.addr;