From: Tristram Ha <tristram...@microchip.com>
Get port link status to know whether to read MIB counters when the link
is going down.
Signed-off-by: Tristram Ha <tristram...@microchip.com>
Reviewed-by: Andrew Lunn <and...@lunn.ch>
---
drivers/net/dsa/microchip/ksz9477.c | 1 +
drivers/net/dsa/microchip/ksz_common.c | 14 ++++++++++++++
drivers/net/dsa/microchip/ksz_common.h | 2 ++
3 files changed, 17 insertions(+)
diff --git a/drivers/net/dsa/microchip/ksz9477.c
b/drivers/net/dsa/microchip/ksz9477.c
index 94cd385..1b8267c 100644
--- a/drivers/net/dsa/microchip/ksz9477.c
+++ b/drivers/net/dsa/microchip/ksz9477.c
@@ -1196,6 +1196,7 @@ static int ksz9477_setup(struct dsa_switch *ds)
.setup = ksz9477_setup,
.phy_read = ksz9477_phy_read16,
.phy_write = ksz9477_phy_write16,
+ .adjust_link = ksz_adjust_link,
.port_enable = ksz_enable_port,
.port_disable = ksz_disable_port,
.get_strings = ksz9477_get_strings,
diff --git a/drivers/net/dsa/microchip/ksz_common.c
b/drivers/net/dsa/microchip/ksz_common.c
index eecfbf3..0589fc7 100644
--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c
@@ -140,6 +140,20 @@ int ksz_phy_write16(struct dsa_switch *ds, int addr, int
reg, u16 val)
}
EXPORT_SYMBOL_GPL(ksz_phy_write16);
+void ksz_adjust_link(struct dsa_switch *ds, int port,
+ struct phy_device *phydev)
+{
+ struct ksz_device *dev = ds->priv;
+ struct ksz_port *p = &dev->ports[port];
+
+ /* Read all MIB counters when the link is going down. */
+ if (!phydev->link) {
+ p->read = true;
+ schedule_work(&dev->mib_read);
+ }
+}
+EXPORT_SYMBOL_GPL(ksz_adjust_link);
+
int ksz_sset_count(struct dsa_switch *ds, int port, int sset)
{
struct ksz_device *dev = ds->priv;
diff --git a/drivers/net/dsa/microchip/ksz_common.h
b/drivers/net/dsa/microchip/ksz_common.h
index f45a553..eb29bb0 100644
--- a/drivers/net/dsa/microchip/ksz_common.h
+++ b/drivers/net/dsa/microchip/ksz_common.h
@@ -14,6 +14,8 @@
int ksz_phy_read16(struct dsa_switch *ds, int addr, int reg);
int ksz_phy_write16(struct dsa_switch *ds, int addr, int reg, u16 val);
+void ksz_adjust_link(struct dsa_switch *ds, int port,
+ struct phy_device *phydev);
int ksz_sset_count(struct dsa_switch *ds, int port, int sset);
void ksz_get_ethtool_stats(struct dsa_switch *ds, int port, uint64_t *buf);
int ksz_port_bridge_join(struct dsa_switch *ds, int port,
--
1.9.1
