[PATCH net-next 4/9] net: dsa: b53/bcm_sf2: implement .support_eee() method

[Russell King (Oracle)]

Implement the .support_eee() method to indicate that EEE is not
supported by two switch variants, rather than making these checks in
the .set_mac_eee() and .get_mac_eee() methods.

Signed-off-by: Russell King (Oracle) <rmk+kernel at armlinux.org.uk>
---
 drivers/net/dsa/b53/b53_common.c | 13 +++++++------
 drivers/net/dsa/b53/b53_priv.h   |  1 +
 drivers/net/dsa/bcm_sf2.c        |  1 +
 3 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index 285785c942b0..0561b60f668f 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -2224,13 +2224,16 @@ int b53_eee_init(struct dsa_switch *ds, int port, struct phy_device *phy)
 }
 EXPORT_SYMBOL(b53_eee_init);
 
-int b53_get_mac_eee(struct dsa_switch *ds, int port, struct ethtool_keee *e)
+bool b53_support_eee(struct dsa_switch *ds, int port)
 {
 	struct b53_device *dev = ds->priv;
 
-	if (is5325(dev) || is5365(dev))
-		return -EOPNOTSUPP;
+	return !is5325(dev) && !is5365(dev);
+}
+EXPORT_SYMBOL(b53_support_eee);
 
+int b53_get_mac_eee(struct dsa_switch *ds, int port, struct ethtool_keee *e)
+{
 	return 0;
 }
 EXPORT_SYMBOL(b53_get_mac_eee);
@@ -2240,9 +2243,6 @@ int b53_set_mac_eee(struct dsa_switch *ds, int port, struct ethtool_keee *e)
 	struct b53_device *dev = ds->priv;
 	struct ethtool_keee *p = &dev->ports[port].eee;
 
-	if (is5325(dev) || is5365(dev))
-		return -EOPNOTSUPP;
-
 	p->eee_enabled = e->eee_enabled;
 	b53_eee_enable_set(ds, port, e->eee_enabled);
 
@@ -2298,6 +2298,7 @@ static const struct dsa_switch_ops b53_switch_ops = {
 	.phylink_get_caps	= b53_phylink_get_caps,
 	.port_enable		= b53_enable_port,
 	.port_disable		= b53_disable_port,
+	.support_eee		= b53_support_eee,
 	.get_mac_eee		= b53_get_mac_eee,
 	.set_mac_eee		= b53_set_mac_eee,
 	.port_bridge_join	= b53_br_join,
diff --git a/drivers/net/dsa/b53/b53_priv.h b/drivers/net/dsa/b53/b53_priv.h
index 05141176daf5..99e5cfc98ae8 100644
--- a/drivers/net/dsa/b53/b53_priv.h
+++ b/drivers/net/dsa/b53/b53_priv.h
@@ -384,6 +384,7 @@ int b53_enable_port(struct dsa_switch *ds, int port, struct phy_device *phy);
 void b53_disable_port(struct dsa_switch *ds, int port);
 void b53_brcm_hdr_setup(struct dsa_switch *ds, int port);
 int b53_eee_init(struct dsa_switch *ds, int port, struct phy_device *phy);
+bool b53_support_eee(struct dsa_switch *ds, int port);
 int b53_get_mac_eee(struct dsa_switch *ds, int port, struct ethtool_keee *e);
 int b53_set_mac_eee(struct dsa_switch *ds, int port, struct ethtool_keee *e);
 
diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c
index 43bde1f583ff..a53fb6191e6b 100644
--- a/drivers/net/dsa/bcm_sf2.c
+++ b/drivers/net/dsa/bcm_sf2.c
@@ -1232,6 +1232,7 @@ static const struct dsa_switch_ops bcm_sf2_ops = {
 	.set_wol		= bcm_sf2_sw_set_wol,
 	.port_enable		= bcm_sf2_port_setup,
 	.port_disable		= bcm_sf2_port_disable,
+	.support_eee		= b53_support_eee,
 	.get_mac_eee		= b53_get_mac_eee,
 	.set_mac_eee		= b53_set_mac_eee,
 	.port_bridge_join	= b53_br_join,
-- 
2.30.2