Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Limit the number of can filters to avoid > MAX_ORDER allocations.
    Fix from Marc Kleine-Budde.

 2) Limit GSO max size in netvsc driver to avoid problems with NVGRE
    configurations. From Stephen Hemminger.

 3) Return proper error when memory allocation fails in
    ser_gigaset_init(), from Dan Carpenter.

 4) Missing linkage undo in error paths of ipvlan_link_new(), from Gao
    Feng.

 5) Missing necessayr SET_NETDEV_DEV in lantiq and cpmac drivers, from
    Florian Fainelli.

 6) Handle probe deferral properly in smsc911x driver.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  net: mlx5: Fix Kconfig help text
  net: smsc911x: back out silently on probe deferrals
  ibmveth: set correct gso_size and gso_type
  net: ethernet: cpmac: Call SET_NETDEV_DEV()
  net: ethernet: lantiq_etop: Call SET_NETDEV_DEV()
  vhost-vsock: fix orphan connection reset
  cxgb4/cxgb4vf: Assign netdev->dev_port with port ID
  driver: ipvlan: Unlink the upper dev when ipvlan_link_new failed
  ser_gigaset: return -ENOMEM on error instead of success
  NET: usb: cdc_mbim: add quirk for supporting Telit LE922A
  can: peak: fix bad memory access and free sequence
  phy: Don't increment MDIO bus refcount unless it's a different owner
  netvsc: reduce maximum GSO size
  drivers: net: cpsw-phy-sel: Clear RGMII_IDMODE on "rgmii" links
  can: raw: raw_setsockopt: limit number of can_filter that can be set

1 files changed, 13 insertions, 3 deletions

diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index 1a4bf8acad78..c4ceb082e970 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -857,11 +857,17 @@ EXPORT_SYMBOL(phy_attached_print);
 int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
 		      u32 flags, phy_interface_t interface)
 {
+	struct module *ndev_owner = dev->dev.parent->driver->owner;
 	struct mii_bus *bus = phydev->mdio.bus;
 	struct device *d = &phydev->mdio.dev;
 	int err;
 
-	if (!try_module_get(bus->owner)) {
+	/* For Ethernet device drivers that register their own MDIO bus, we
+	 * will have bus->owner match ndev_mod, so we do not want to increment
+	 * our own module->refcnt here, otherwise we would not be able to
+	 * unload later on.
+	 */
+	if (ndev_owner != bus->owner && !try_module_get(bus->owner)) {
 		dev_err(&dev->dev, "failed to get the bus module\n");
 		return -EIO;
 	}
@@ -921,7 +927,8 @@ int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
 
 error:
 	put_device(d);
-	module_put(bus->owner);
+	if (ndev_owner != bus->owner)
+		module_put(bus->owner);
 	return err;
 }
 EXPORT_SYMBOL(phy_attach_direct);
@@ -971,6 +978,8 @@ EXPORT_SYMBOL(phy_attach);
  */
 void phy_detach(struct phy_device *phydev)
 {
+	struct net_device *dev = phydev->attached_dev;
+	struct module *ndev_owner = dev->dev.parent->driver->owner;
 	struct mii_bus *bus;
 	int i;
 
@@ -998,7 +1007,8 @@ void phy_detach(struct phy_device *phydev)
 	bus = phydev->mdio.bus;
 
 	put_device(&phydev->mdio.dev);
-	module_put(bus->owner);
+	if (ndev_owner != bus->owner)
+		module_put(bus->owner);
 }
 EXPORT_SYMBOL(phy_detach);