| Message ID | 20230322071959.9101-3-wsa+renesas@sang-engineering.com (mailing list archive) |
|---|---|
| State | Mainlined |
| Commit | f22c993f31fa9615df46e49cd768b713d39a852f |
| Delegated to: | Geert Uytterhoeven |
| Headers | show |
| Series | smsc911x: fix issues when interface is not up yet | expand |
On Wed, Mar 22, 2023 at 08:19:59AM +0100, Wolfram Sang wrote: > SMSC911x doesn't need mdiobus suspend/resume, that's why it sets > 'mac_managed_pm'. However, setting it needs to be moved from init to > probe, so mdiobus PM functions will really never be called (e.g. when > the interface is not up yet during suspend/resume). > > Fixes: 3ce9f2bef755 ("net: smsc911x: Stop and start PHY during suspend and resume") > Suggested-by: Heiner Kallweit <hkallweit1@gmail.com> > Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Simon Horman <simon.horman@corigine.com>
diff --git a/drivers/net/ethernet/smsc/smsc911x.c b/drivers/net/ethernet/smsc/smsc911x.c index 67cb5eb9c716..01aac820ac30 100644 --- a/drivers/net/ethernet/smsc/smsc911x.c +++ b/drivers/net/ethernet/smsc/smsc911x.c @@ -1037,8 +1037,6 @@ static int smsc911x_mii_probe(struct net_device *dev) return ret; } - /* Indicate that the MAC is responsible for managing PHY PM */ - phydev->mac_managed_pm = true; phy_attached_info(phydev); phy_set_max_speed(phydev, SPEED_100); @@ -1066,6 +1064,7 @@ static int smsc911x_mii_init(struct platform_device *pdev, struct net_device *dev) { struct smsc911x_data *pdata = netdev_priv(dev); + struct phy_device *phydev; int err = -ENXIO; pdata->mii_bus = mdiobus_alloc(); @@ -1108,6 +1107,10 @@ static int smsc911x_mii_init(struct platform_device *pdev, goto err_out_free_bus_2; } + phydev = phy_find_first(pdata->mii_bus); + if (phydev) + phydev->mac_managed_pm = true; + return 0; err_out_free_bus_2:
SMSC911x doesn't need mdiobus suspend/resume, that's why it sets 'mac_managed_pm'. However, setting it needs to be moved from init to probe, so mdiobus PM functions will really never be called (e.g. when the interface is not up yet during suspend/resume). Fixes: 3ce9f2bef755 ("net: smsc911x: Stop and start PHY during suspend and resume") Suggested-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> --- Changes since v2: * kept the original error handling when a PHY is not present in mii_probe() to avoid regressions. Because the patch is simpler now, it is also easier to backport. drivers/net/ethernet/smsc/smsc911x.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)