[PATCH net-next v2 1/2] net: phy: Add phy library support to check supported list when autoneg is enabled

Divya Koppera
2024-08-13T18:13:31Z

Adds support in phy library to accept autoneg configuration only when
feature is enabled in supported list.

Signed-off-by: Divya.Koppera <divya.koppera@microchip.com>
---
drivers/net/phy/phy.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index 785182fa5fe0..5e028ddc03da 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -1089,7 +1089,10 @@ int phy_ethtool_ksettings_set(struct phy_device *phydev,
if (autoneg != AUTONEG_ENABLE && autoneg != AUTONEG_DISABLE)
return -EINVAL;

- if (autoneg == AUTONEG_ENABLE && linkmode_empty(advertising))
+ if (autoneg == AUTONEG_ENABLE &&
+ (linkmode_empty(advertising) ||
+ !(linkmode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
+ phydev->supported))))
return -EINVAL;

if (autoneg == AUTONEG_DISABLE &&
--
2.34.1