@@ -1127,8 +1127,12 @@ static void lan743x_ethtool_get_wol(struct net_device *netdev,
if (netdev->phydev)
phy_ethtool_get_wol(netdev->phydev, wol);
- wol->supported |= WAKE_BCAST | WAKE_UCAST | WAKE_MCAST |
- WAKE_MAGIC | WAKE_PHY | WAKE_ARP;
+ if (wol->supported != adapter->phy_wol_supported)
+ netif_warn(adapter, drv, adapter->netdev,
+ "PHY changed its supported WOL! old=%x, new=%x\n",
+ adapter->phy_wol_supported, wol->supported);
+
+ wol->supported |= MAC_SUPPORTED_WAKES;
if (adapter->is_pci11x1x)
wol->supported |= WAKE_MAGICSECURE;
@@ -1143,7 +1147,39 @@ static int lan743x_ethtool_set_wol(struct net_device *netdev,
{
struct lan743x_adapter *adapter = netdev_priv(netdev);
+ /* WAKE_MAGICSEGURE is a modifier of and only valid together with
+ * WAKE_MAGIC
+ */
+ if ((wol->wolopts & WAKE_MAGICSECURE) && !(wol->wolopts & WAKE_MAGIC))
+ return -EINVAL;
+
+ if (netdev->phydev) {
+ struct ethtool_wolinfo phy_wol;
+ int ret;
+
+ phy_wol.wolopts = wol->wolopts & adapter->phy_wol_supported;
+
+ /* If WAKE_MAGICSECURE was requested, filter out WAKE_MAGIC
+ * for PHYs that do not support WAKE_MAGICSECURE
+ */
+ if (wol->wolopts & WAKE_MAGICSECURE &&
+ !(adapter->phy_wol_supported & WAKE_MAGICSECURE))
+ phy_wol.wolopts &= ~WAKE_MAGIC;
+
+ ret = phy_ethtool_set_wol(netdev->phydev, &phy_wol);
+ if (ret && (ret != -EOPNOTSUPP))
+ return ret;
+
+ if (ret == -EOPNOTSUPP)
+ adapter->phy_wolopts = 0;
+ else
+ adapter->phy_wolopts = phy_wol.wolopts;
+ } else {
+ adapter->phy_wolopts = 0;
+ }
+
adapter->wolopts = 0;
+ wol->wolopts &= ~adapter->phy_wolopts;
if (wol->wolopts & WAKE_UCAST)
adapter->wolopts |= WAKE_UCAST;
if (wol->wolopts & WAKE_MCAST)
@@ -1164,10 +1200,10 @@ static int lan743x_ethtool_set_wol(struct net_device *netdev,
memset(adapter->sopass, 0, sizeof(u8) * SOPASS_MAX);
}
+ wol->wolopts = adapter->wolopts | adapter->phy_wolopts;
device_set_wakeup_enable(&adapter->pdev->dev, (bool)wol->wolopts);
- return netdev->phydev ? phy_ethtool_set_wol(netdev->phydev, wol)
- : -ENETDOWN;
+ return 0;
}
#endif /* CONFIG_PM */
@@ -3118,6 +3118,17 @@ static int lan743x_netdev_open(struct net_device *netdev)
if (ret)
goto close_tx;
}
+
+#ifdef CONFIG_PM
+ if (adapter->netdev->phydev) {
+ struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
+
+ phy_ethtool_get_wol(netdev->phydev, &wol);
+ adapter->phy_wol_supported = wol.supported;
+ adapter->phy_wolopts = wol.wolopts;
+ }
+#endif
+
return 0;
close_tx:
@@ -3587,10 +3598,9 @@ static void lan743x_pm_set_wol(struct lan743x_adapter *adapter)
pmtctl |= PMT_CTL_ETH_PHY_D3_COLD_OVR_ | PMT_CTL_ETH_PHY_D3_OVR_;
- if (adapter->wolopts & WAKE_PHY) {
- pmtctl |= PMT_CTL_ETH_PHY_EDPD_PLL_CTL_;
+ if (adapter->phy_wolopts)
pmtctl |= PMT_CTL_ETH_PHY_WAKE_EN_;
- }
+
if (adapter->wolopts & WAKE_MAGIC) {
wucsr |= MAC_WUCSR_MPEN_;
macrx |= MAC_RX_RXEN_;
@@ -3686,7 +3696,7 @@ static int lan743x_pm_suspend(struct device *dev)
lan743x_csr_write(adapter, MAC_WUCSR2, 0);
lan743x_csr_write(adapter, MAC_WK_SRC, 0xFFFFFFFF);
- if (adapter->wolopts)
+ if (adapter->wolopts || adapter->phy_wolopts)
lan743x_pm_set_wol(adapter);
if (adapter->is_pci11x1x) {
@@ -1042,6 +1042,8 @@ enum lan743x_sgmii_lsd {
LINK_2500_SLAVE
};
+#define MAC_SUPPORTED_WAKES (WAKE_BCAST | WAKE_UCAST | WAKE_MCAST | \
+ WAKE_MAGIC | WAKE_ARP)
struct lan743x_adapter {
struct net_device *netdev;
struct mii_bus *mdiobus;
@@ -1049,6 +1051,8 @@ struct lan743x_adapter {
#ifdef CONFIG_PM
u32 wolopts;
u8 sopass[SOPASS_MAX];
+ u32 phy_wolopts;
+ u32 phy_wol_supported;
#endif
struct pci_dev *pdev;
struct lan743x_csr csr;
Prevent options not supported by the PHY from being requested to it by the MAC Whenever a WOL option is supported by both, the PHY is given priority since that usually leads to better power savings. Fixes: e9e13b6adc338 ("lan743x: fix for potential NULL pointer dereference with bare card") Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microchip.com> Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com> Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202406052200.w3zuc32H-lkp@intel.com/ --- Change List: ------------ V3 -> V4: - Fix the support for "CONFIG_PM=N" V2 -> V3: - Remove the "phy does not support WOL" debug message which is not required - Remove WAKE_PHY support option from Ethernet MAC (LAN743x/PCI11x1x) driver - Add "phy_wol_supported" and "phy_wolopts" variables to hold PHY's WOL config V1 -> V2: - Repost - No change V0 -> V1: - Change the "phy does not support WOL" print from netif_info() to netif_dbg() .../net/ethernet/microchip/lan743x_ethtool.c | 44 +++++++++++++++++-- drivers/net/ethernet/microchip/lan743x_main.c | 18 ++++++-- drivers/net/ethernet/microchip/lan743x_main.h | 4 ++ 3 files changed, 58 insertions(+), 8 deletions(-)