net: phy: fix phy_validate_pause

We have valid scenarios where ETHTOOL_LINK_MODE_Pause_BIT doesn't
need to be supported. Therefore extend the first check to check
for rx_pause being set.

See also phy_set_asym_pause:
rx=0 and tx=1: advertise asym pause only
rx=0 and tx=0: stop advertising both pause modes

The fixed commit isn't wrong, it's just the one that introduced the
linkmode bitmaps.

Fixes: 3c1bcc8614db ("net: ethernet: Convert phydev advertize and supported from u32 to link mode")
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 7 insertions, 4 deletions

diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index 77068c545de0..cd5966b0db57 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -2044,11 +2044,14 @@ bool phy_validate_pause(struct phy_device *phydev,
                         struct ethtool_pauseparam *pp)
 {
         if (!linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT,
-                               phydev->supported) ||
-            (!linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT,
-                                phydev->supported) &&
-             pp->rx_pause != pp->tx_pause))
+                               phydev->supported) && pp->rx_pause)
                 return false;
+
+        if (!linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT,
+                               phydev->supported) &&
+            pp->rx_pause != pp->tx_pause)
+                return false;
+
         return true;
 }
 EXPORT_SYMBOL(phy_validate_pause);