2 files changed, 38 insertions, 0 deletions

diff --git a/drivers/net/phy/fixed_phy.c b/drivers/net/phy/fixed_phy.c
index a08a3c78ba97..1960b46add65 100644
--- a/drivers/net/phy/fixed_phy.c
+++ b/drivers/net/phy/fixed_phy.c
@@ -183,6 +183,35 @@ int fixed_phy_set_link_update(struct phy_device *phydev,
 }
 EXPORT_SYMBOL_GPL(fixed_phy_set_link_update);
 
+int fixed_phy_update_state(struct phy_device *phydev,
+                           const struct fixed_phy_status *status,
+                           const struct fixed_phy_status *changed)
+{
+        struct fixed_mdio_bus *fmb = &platform_fmb;
+        struct fixed_phy *fp;
+
+        if (!phydev || !phydev->bus)
+                return -EINVAL;
+
+        list_for_each_entry(fp, &fmb->phys, node) {
+                if (fp->addr == phydev->addr) {
+#define _UPD(x) if (changed->x) \
+        fp->status.x = status->x
+                        _UPD(link);
+                        _UPD(speed);
+                        _UPD(duplex);
+                        _UPD(pause);
+                        _UPD(asym_pause);
+#undef _UPD
+                        fixed_phy_update_regs(fp);
+                        return 0;
+                }
+        }
+
+        return -ENOENT;
+}
+EXPORT_SYMBOL(fixed_phy_update_state);
+
 int fixed_phy_add(unsigned int irq, int phy_addr,
                   struct fixed_phy_status *status)
 {
diff --git a/include/linux/phy_fixed.h b/include/linux/phy_fixed.h
index 7e75bfe37cc7..fe5732d53eda 100644
--- a/include/linux/phy_fixed.h
+++ b/include/linux/phy_fixed.h
@@ -21,6 +21,9 @@ extern void fixed_phy_del(int phy_addr);
 extern int fixed_phy_set_link_update(struct phy_device *phydev,
                         int (*link_update)(struct net_device *,
                                            struct fixed_phy_status *));
+extern int fixed_phy_update_state(struct phy_device *phydev,
+                           const struct fixed_phy_status *status,
+                           const struct fixed_phy_status *changed);
 #else
 static inline int fixed_phy_add(unsigned int irq, int phy_id,
                                 struct fixed_phy_status *status)
@@ -43,6 +46,12 @@ static inline int fixed_phy_set_link_update(struct phy_device *phydev,
 {
         return -ENODEV;
 }
+static inline int fixed_phy_update_state(struct phy_device *phydev,
+                           const struct fixed_phy_status *status,
+                           const struct fixed_phy_status *changed)
+{
+        return -ENODEV;
+}
 #endif /* CONFIG_FIXED_PHY */
 
 #endif /* __PHY_FIXED_H */