From: Viorel Suman viorel.suman@nxp.com
[ Upstream commit d7cd5e06c9dd70a82f1461c7b5f676bc03f5cd61 ]
Before 7beecaf7d507b ("net: phy: at803x: improve the WOL feature") patch "at803x_get_wol" implementation used AT803X_INTR_ENABLE_WOL value to set WAKE_MAGIC flag, and now AT803X_WOL_EN value is used for the same purpose. The problem here is that the values of these two bits are different after hardware reset: AT803X_INTR_ENABLE_WOL=0 after hardware reset, but AT803X_WOL_EN=1. So now, if called right after boot, "at803x_get_wol" will set WAKE_MAGIC flag, even if WOL function is not enabled by calling "at803x_set_wol" function. The patch disables WOL function on probe thus the behavior is consistent.
Fixes: 7beecaf7d507b ("net: phy: at803x: improve the WOL feature") Signed-off-by: Viorel Suman viorel.suman@nxp.com Link: https://lore.kernel.org/r/20220527084935.235274-1-viorel.suman@oss.nxp.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/phy/at803x.c | 33 ++++++++++++++++++++++----------- 1 file changed, 22 insertions(+), 11 deletions(-)
diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c index 73926006d319..6a467e7817a6 100644 --- a/drivers/net/phy/at803x.c +++ b/drivers/net/phy/at803x.c @@ -433,20 +433,21 @@ static void at803x_context_restore(struct phy_device *phydev, static int at803x_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) { - struct net_device *ndev = phydev->attached_dev; - const u8 *mac; int ret, irq_enabled; - unsigned int i; - static const unsigned int offsets[] = { - AT803X_LOC_MAC_ADDR_32_47_OFFSET, - AT803X_LOC_MAC_ADDR_16_31_OFFSET, - AT803X_LOC_MAC_ADDR_0_15_OFFSET, - }; - - if (!ndev) - return -ENODEV;
if (wol->wolopts & WAKE_MAGIC) { + struct net_device *ndev = phydev->attached_dev; + const u8 *mac; + unsigned int i; + static const unsigned int offsets[] = { + AT803X_LOC_MAC_ADDR_32_47_OFFSET, + AT803X_LOC_MAC_ADDR_16_31_OFFSET, + AT803X_LOC_MAC_ADDR_0_15_OFFSET, + }; + + if (!ndev) + return -ENODEV; + mac = (const u8 *) ndev->dev_addr;
if (!is_valid_ether_addr(mac)) @@ -857,6 +858,9 @@ static int at803x_probe(struct phy_device *phydev) if (phydev->drv->phy_id == ATH8031_PHY_ID) { int ccr = phy_read(phydev, AT803X_REG_CHIP_CONFIG); int mode_cfg; + struct ethtool_wolinfo wol = { + .wolopts = 0, + };
if (ccr < 0) goto err; @@ -872,6 +876,13 @@ static int at803x_probe(struct phy_device *phydev) priv->is_fiber = true; break; } + + /* Disable WOL by default */ + ret = at803x_set_wol(phydev, &wol); + if (ret < 0) { + phydev_err(phydev, "failed to disable WOL on probe: %d\n", ret); + goto err; + } }
return 0;