6.12-stable review patch. If anyone has any objections, please let me know.
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From: Russell King (Oracle) rmk+kernel@armlinux.org.uk
commit 9723a77318b7c0cfd06ea207e52a042f8c815318 upstream.
Add a hook to determine whether the switch supports EEE. This will return false if the switch does not, or true if it does. If the method is not implemented, we assume (currently) that the switch supports EEE.
Signed-off-by: Russell King (Oracle) rmk+kernel@armlinux.org.uk Reviewed-by: Florian Fainelli florian.fainelli@broadcom.com Reviewed-by: Vladimir Oltean olteanv@gmail.com Link: https://patch.msgid.link/E1tL144-006cZD-El@rmk-PC.armlinux.org.uk Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Harshit Mogalapalli harshit.m.mogalapalli@oracle.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- include/net/dsa.h | 1 + net/dsa/user.c | 8 ++++++++ 2 files changed, 9 insertions(+)
--- a/include/net/dsa.h +++ b/include/net/dsa.h @@ -1003,6 +1003,7 @@ struct dsa_switch_ops { /* * Port's MAC EEE settings */ + bool (*support_eee)(struct dsa_switch *ds, int port); int (*set_mac_eee)(struct dsa_switch *ds, int port, struct ethtool_keee *e); int (*get_mac_eee)(struct dsa_switch *ds, int port, --- a/net/dsa/user.c +++ b/net/dsa/user.c @@ -1231,6 +1231,10 @@ static int dsa_user_set_eee(struct net_d struct dsa_switch *ds = dp->ds; int ret;
+ /* Check whether the switch supports EEE */ + if (ds->ops->support_eee && !ds->ops->support_eee(ds, dp->index)) + return -EOPNOTSUPP; + /* Port's PHY and MAC both need to be EEE capable */ if (!dev->phydev || !dp->pl) return -ENODEV; @@ -1251,6 +1255,10 @@ static int dsa_user_get_eee(struct net_d struct dsa_switch *ds = dp->ds; int ret;
+ /* Check whether the switch supports EEE */ + if (ds->ops->support_eee && !ds->ops->support_eee(ds, dp->index)) + return -EOPNOTSUPP; + /* Port's PHY and MAC both need to be EEE capable */ if (!dev->phydev || !dp->pl) return -ENODEV;