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Subject[PATCH 5.0 125/137] net: phy: fix phy_validate_pause
Date
From: Heiner Kallweit <hkallweit1@gmail.com>

[ Upstream commit b4010af981ac8cdf1f7f58eb6b131c482e5dee02 ]

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/phy/phy_device.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)

--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -2083,11 +2083,14 @@ bool phy_validate_pause(struct phy_devic
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);

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