net: dsa: mv88e6xxx: add common and ppu remove function

index b1b14f5..6287096 100644
@@ -331,6 +331,16 @@ void mv88e6xxx_ppu_state_init(struct dsa_switch *ds)
 	ps->ppu_timer.function = mv88e6xxx_ppu_reenable_timer;
 }
 
+void mv88e6xxx_ppu_state_remove(struct dsa_switch *ds)
+{
+	struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
+	
+	del_timer_sync(&ps->ppu_timer);
+
+	cancel_work_sync(&ps->bridge_work);
+	flush_work(&ps->bridge_work);
+}
+
 int mv88e6xxx_phy_read_ppu(struct dsa_switch *ds, int addr, int regnum)
 {
 	int ret;

@@ -2083,6 +2093,14 @@ int mv88e6xxx_setup_common(struct dsa_switch *ds)
 	return 0;
 }
 
+void mv88e6xxx_remove_common(struct dsa_switch *ds)
+{
+	struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
+
+	cancel_work_sync(&ps->bridge_work);
+	flush_work(&ps->bridge_work);
+}
+
 int mv88e6xxx_setup_global(struct dsa_switch *ds)
 {
 	struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);

index 6f9ed5d..64d37a0 100644
@@ -417,6 +417,7 @@ struct mv88e6xxx_hw_stat {
 int mv88e6xxx_switch_reset(struct dsa_switch *ds, bool ppu_active);
 int mv88e6xxx_setup_ports(struct dsa_switch *ds);
 int mv88e6xxx_setup_common(struct dsa_switch *ds);
+void mv88e6xxx_remove_common(struct dsa_switch *ds);
 int mv88e6xxx_setup_global(struct dsa_switch *ds);
 int __mv88e6xxx_reg_read(struct mii_bus *bus, int sw_addr, int addr, int reg);
 int mv88e6xxx_reg_read(struct dsa_switch *ds, int addr, int reg);

@@ -431,6 +432,7 @@ int mv88e6xxx_phy_read_indirect(struct dsa_switch *ds, int port, int regnum);
 int mv88e6xxx_phy_write_indirect(struct dsa_switch *ds, int port, int regnum,
 				 u16 val);
 void mv88e6xxx_ppu_state_init(struct dsa_switch *ds);
+void mv88e6xxx_ppu_state_remove(struct dsa_switch *ds);
 int mv88e6xxx_phy_read_ppu(struct dsa_switch *ds, int addr, int regnum);
 int mv88e6xxx_phy_write_ppu(struct dsa_switch *ds, int addr,
 			    int regnum, u16 val);