Revert "mvebu: remove linux 4.4 support"

This reverts commit 51397d7d95d9f5e210a5557f65de1fa21e6f5921.
There are some unresolved random crashes on WRT1900AC v1 that still need
to be sorted out

Signed-off-by: Felix Fietkau <nbd@nbd.name>

1 files changed, 68 insertions, 0 deletions

diff --git a/target/linux/mvebu/patches-4.4/146-sfp-phylink-hook-up-eeprom-functions.patch b/target/linux/mvebu/patches-4.4/146-sfp-phylink-hook-up-eeprom-functions.patch
new file mode 100644
index 0000000000..f37e652b8a
--- /dev/null
+++ b/target/linux/mvebu/patches-4.4/146-sfp-phylink-hook-up-eeprom-functions.patch
@@ -0,0 +1,68 @@
+From a7091ef24223ed39b39c6b73b77c55c8a607f34a Mon Sep 17 00:00:00 2001
+From: Russell King <rmk+kernel@arm.linux.org.uk>
+Date: Thu, 8 Oct 2015 23:49:47 +0100
+Subject: [PATCH 734/744] sfp/phylink: hook up eeprom functions
+
+Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
+---
+ drivers/net/phy/sfp.c | 19 +++++++++++--------
+ 1 file changed, 11 insertions(+), 8 deletions(-)
+
+--- a/drivers/net/phy/sfp.c
++++ b/drivers/net/phy/sfp.c
+@@ -901,11 +901,9 @@ static void sfp_sm_event(struct sfp *sfp
+ 	mutex_unlock(&sfp->sm_mutex);
+ }
+ 
+-#if 0
+-static int sfp_phy_module_info(struct phy_device *phy,
+-			       struct ethtool_modinfo *modinfo)
++static int sfp_module_info(void *priv, struct ethtool_modinfo *modinfo)
+ {
+-	struct sfp *sfp = phy->priv;
++	struct sfp *sfp = priv;
+ 
+ 	/* locking... and check module is present */
+ 
+@@ -919,10 +917,9 @@ static int sfp_phy_module_info(struct ph
+ 	return 0;
+ }
+ 
+-static int sfp_phy_module_eeprom(struct phy_device *phy,
+-	struct ethtool_eeprom *ee, u8 *data)
++static int sfp_module_eeprom(void *priv, struct ethtool_eeprom *ee, u8 *data)
+ {
+-	struct sfp *sfp = phy->priv;
++	struct sfp *sfp = priv;
+ 	unsigned int first, last, len;
+ 	int ret;
+ 
+@@ -953,7 +950,11 @@ static int sfp_phy_module_eeprom(struct
+ 	}
+ 	return 0;
+ }
+-#endif
++
++static const struct phylink_module_ops sfp_module_ops = {
++	.get_module_info = sfp_module_info,
++	.get_module_eeprom = sfp_module_eeprom,
++};
+ 
+ static void sfp_timeout(struct work_struct *work)
+ {
+@@ -1029,6 +1030,7 @@ static int sfp_netdev_notify(struct noti
+ 	case NETDEV_UNREGISTER:
+ 		if (sfp->mod_phy && sfp->phylink)
+ 			phylink_disconnect_phy(sfp->phylink);
++		phylink_unregister_module(sfp->phylink, sfp);
+ 		sfp->phylink = NULL;
+ 		dev_put(sfp->ndev);
+ 		sfp->ndev = NULL;
+@@ -1145,6 +1147,7 @@ static int sfp_probe(struct platform_dev
+ 		}
+ 
+ 		phylink_disable(sfp->phylink);
++		phylink_register_module(sfp->phylink, sfp, &sfp_module_ops);
+ 	}
+ 
+ 	sfp->state = sfp_get_state(sfp);