1 files changed, 43 insertions, 0 deletions
diff --git a/target/linux/brcm63xx/patches-4.4/001-4.12-08-net-phy-Call-bus-reset-after-releasing-PHYs-from-res.patch b/target/linux/brcm63xx/patches-4.4/001-4.12-08-net-phy-Call-bus-reset-after-releasing-PHYs-from-res.patch
new file mode 100644
index 0000000000..5788a37de6
--- /dev/null
+++ b/target/linux/brcm63xx/patches-4.4/001-4.12-08-net-phy-Call-bus-reset-after-releasing-PHYs-from-res.patch
@@ -0,0 +1,43 @@
+From df0c8d911abf6ba97b2c2fc3c5a12769e0b081a3 Mon Sep 17 00:00:00 2001
+From: Florian Fainelli <f.fainelli@gmail.com>
+Date: Thu, 11 May 2017 11:24:16 -0700
+Subject: [PATCH] net: phy: Call bus->reset() after releasing PHYs from reset
+
+The API convention makes it that a given MDIO bus reset should be able
+to access PHY devices in its reset() callback and perform additional
+MDIO accesses in order to bring the bus and PHYs in a working state.
+
+Commit 69226896ad63 ("mdio_bus: Issue GPIO RESET to PHYs.") broke that
+contract by first calling bus->reset() and then release all PHYs from
+reset using their shared GPIO line, so restore the expected
+functionality here.
+
+Fixes: 69226896ad63 ("mdio_bus: Issue GPIO RESET to PHYs.")
+Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/phy/mdio_bus.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+--- a/drivers/net/phy/mdio_bus.c
++++ b/drivers/net/phy/mdio_bus.c
+@@ -279,9 +279,6 @@ int __mdiobus_register(struct mii_bus *b
+ 
+ 	mutex_init(&bus->mdio_lock);
+ 
+-	if (bus->reset)
+-		bus->reset(bus);
+-
+ 	/* de-assert bus level PHY GPIO resets */
+ 	if (bus->num_reset_gpios > 0) {
+ 		bus->reset_gpiod = devm_kcalloc(&bus->dev,
+@@ -311,6 +308,9 @@ int __mdiobus_register(struct mii_bus *b
+ 		}
+ 	}
+ 
++	if (bus->reset)
++		bus->reset(bus);
++
+ 	for (i = 0; i < PHY_MAX_ADDR; i++) {
+ 		if ((bus->phy_mask & (1 << i)) == 0) {
+ 			struct phy_device *phydev;