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net: stmmac: check if MAC needs to attach to a PHY

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After the introduction of the fixed-link support, the MAC driver
no longer attempt to scan for a PHY to attach to. This causes the
non fixed-link setups to stop working.

Using the phylink_expects_phy() to check and determine if the MAC
should expect and attach a PHY.

Fixes: ab21cf9209 ("net: stmmac: make mdio register skips PHY scanning for fixed-link")
Signed-off-by: Michael Sit Wei Hong <michael.wei.hong.sit@intel.com>
Signed-off-by: Lai Peter Jun Ann <peter.jun.ann.lai@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Sit Wei Hong 2023-03-30 17:14:03 +08:00 committed by David S. Miller
parent 653a180957
commit fe2cfbc968
1 changed files with 3 additions and 1 deletions
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4
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
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@ -1135,6 +1135,7 @@ static int stmmac_init_phy(struct net_device *dev)
{
struct stmmac_priv *priv = netdev_priv(dev);
struct fwnode_handle *fwnode;
bool phy_needed;
int ret;
fwnode = of_fwnode_handle(priv->plat->phylink_node);
@ -1144,10 +1145,11 @@ static int stmmac_init_phy(struct net_device *dev)
if (fwnode)
ret = phylink_fwnode_phy_connect(priv->phylink, fwnode, 0);
phy_needed = phylink_expects_phy(priv->phylink);
/* Some DT bindings do not set-up the PHY handle. Let's try to
* manually parse it
*/
if (!fwnode || ret) {
if (!fwnode || phy_needed || ret) {
int addr = priv->plat->phy_addr;
struct phy_device *phydev;