From 7091f01e8cf6989e63c4eacb59b654fcff057901 Mon Sep 17 00:00:00 2001
From: David Daney <david.daney@cavium.com>
Date: Mon, 14 Mar 2016 17:30:37 -0700
Subject: [PATCH 1/3] phy: mdio-cavium: Add missing MODULE_* annotations.

When the code was factored out of mdio-octeon.c, the
MODULE_DESCRIPTION, MODULE_AUTHOR and MODULE_LICENSE annotations were
inadvertently omitted.  Restore them so that we don't get kernel taint
warnings upon module loading.

Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/phy/mdio-cavium.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/phy/mdio-cavium.c b/drivers/net/phy/mdio-cavium.c
index e796ee121eac0..6df2fa755bb43 100644
--- a/drivers/net/phy/mdio-cavium.c
+++ b/drivers/net/phy/mdio-cavium.c
@@ -147,3 +147,7 @@ int cavium_mdiobus_write(struct mii_bus *bus, int phy_id, int regnum, u16 val)
 	return 0;
 }
 EXPORT_SYMBOL(cavium_mdiobus_write);
+
+MODULE_DESCRIPTION("Common code for OCTEON and Thunder MDIO bus drivers");
+MODULE_AUTHOR("David Daney");
+MODULE_LICENSE("GPL");

From 9277a4f875adbeeb6209c0a3e3cf04c752522b2e Mon Sep 17 00:00:00 2001
From: David Daney <david.daney@cavium.com>
Date: Mon, 14 Mar 2016 17:30:38 -0700
Subject: [PATCH 2/3] net: cavium: For Kconfig THUNDER_NIC_BGX, select
 MDIO_THUNDER.

Previously we selected MDIO_OCTEON, which after creating the Thunder
specific MDIO bus driver is much less useful.

Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/cavium/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/cavium/Kconfig b/drivers/net/ethernet/cavium/Kconfig
index 8fb84e69c30ec..953aa408c3840 100644
--- a/drivers/net/ethernet/cavium/Kconfig
+++ b/drivers/net/ethernet/cavium/Kconfig
@@ -35,7 +35,7 @@ config	THUNDER_NIC_BGX
 	tristate "Thunder MAC interface driver (BGX)"
 	depends on 64BIT
 	select PHYLIB
-	select MDIO_OCTEON
+	select MDIO_THUNDER
 	---help---
 	  This driver supports programming and controlling of MAC
 	  interface from NIC physical function driver.

From b7d3e3d3d21a09f8e45043d548224000a8efe06a Mon Sep 17 00:00:00 2001
From: David Daney <david.daney@cavium.com>
Date: Mon, 14 Mar 2016 17:30:39 -0700
Subject: [PATCH 3/3] net: thunderx: Don't leak phy device references on
 -EPROBE_DEFER condition.

It is possible, although unlikely, that probing will find the
phy_device for the first LMAC of a thunder BGX device, but then need
to fail with -EPROBE_DEFER on a subsequent LMAC.  In this case, we
need to call put_device() on each of the phy_devices that were
obtained, but will be unused due to returning -EPROBE_DEFER.

Also, since we can break out of the probing loop early, we need to
explicitly call of_node_put() outside of the loop.

Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 .../net/ethernet/cavium/thunder/thunder_bgx.c | 26 ++++++++++++++-----
 1 file changed, 20 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
index feed2318201b2..967951582e033 100644
--- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
+++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
@@ -974,17 +974,18 @@ static int bgx_init_acpi_phy(struct bgx *bgx)
 static int bgx_init_of_phy(struct bgx *bgx)
 {
 	struct fwnode_handle *fwn;
+	struct device_node *node = NULL;
 	u8 lmac = 0;
-	const char *mac;
 
 	device_for_each_child_node(&bgx->pdev->dev, fwn) {
 		struct phy_device *pd;
 		struct device_node *phy_np;
-		struct device_node *node = to_of_node(fwn);
+		const char *mac;
 
 		/* Should always be an OF node.  But if it is not, we
 		 * cannot handle it, so exit the loop.
 		 */
+		node = to_of_node(fwn);
 		if (!node)
 			break;
 
@@ -1005,17 +1006,30 @@ static int bgx_init_of_phy(struct bgx *bgx)
 			/* Wait until the phy drivers are available */
 			pd = of_phy_find_device(phy_np);
 			if (!pd)
-				return -EPROBE_DEFER;
+				goto defer;
 			bgx->lmac[lmac].phydev = pd;
 		}
 
 		lmac++;
-		if (lmac == MAX_LMAC_PER_BGX) {
-			of_node_put(node);
+		if (lmac == MAX_LMAC_PER_BGX)
 			break;
-		}
 	}
+	of_node_put(node);
 	return 0;
+
+defer:
+	/* We are bailing out, try not to leak device reference counts
+	 * for phy devices we may have already found.
+	 */
+	while (lmac) {
+		if (bgx->lmac[lmac].phydev) {
+			put_device(&bgx->lmac[lmac].phydev->mdio.dev);
+			bgx->lmac[lmac].phydev = NULL;
+		}
+		lmac--;
+	}
+	of_node_put(node);
+	return -EPROBE_DEFER;
 }
 
 #else