kernel: add backported phy/phylink/sfp patches

Backport the phy/phylink/sfp patches currently queued in netdev or in
mainline necessary to support GPON popular modules, specifically to
support Huawei and Nokia GPON modules.

Signed-off-by: Russell King <linux@armlinux.org.uk>
[jonas.gorski: include kernel version in file names, refresh patches]
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>

1 files changed, 84 insertions, 0 deletions

diff --git a/target/linux/generic/backport-4.19/713-v5.2-net-phylink-avoid-reducing-support-mask.patch b/target/linux/generic/backport-4.19/713-v5.2-net-phylink-avoid-reducing-support-mask.patch
new file mode 100644
index 0000000000..3aa8d9e571
--- /dev/null
+++ b/target/linux/generic/backport-4.19/713-v5.2-net-phylink-avoid-reducing-support-mask.patch
@@ -0,0 +1,84 @@
+From 8ac1d3e5cf7d277769ba3403d99f643fab1e3fae Mon Sep 17 00:00:00 2001
+From: Russell King <rmk+kernel@armlinux.org.uk>
+Date: Sat, 23 Nov 2019 14:19:54 +0000
+Subject: [PATCH 611/660] net: phylink: avoid reducing support mask
+
+Avoid reducing the support mask as a result of the interface type
+selected for SFP modules, or when setting the link settings through
+ethtool - this should only change when the supported link modes of
+the hardware combination change.
+
+Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/phy/phylink.c | 13 +++++++++----
+ 1 file changed, 9 insertions(+), 4 deletions(-)
+
+--- a/drivers/net/phy/phylink.c
++++ b/drivers/net/phy/phylink.c
+@@ -1137,6 +1137,7 @@ EXPORT_SYMBOL_GPL(phylink_ethtool_ksetti
+ int phylink_ethtool_ksettings_set(struct phylink *pl,
+ 				  const struct ethtool_link_ksettings *kset)
+ {
++	__ETHTOOL_DECLARE_LINK_MODE_MASK(support);
+ 	struct ethtool_link_ksettings our_kset;
+ 	struct phylink_link_state config;
+ 	int ret;
+@@ -1147,11 +1148,12 @@ int phylink_ethtool_ksettings_set(struct
+ 	    kset->base.autoneg != AUTONEG_ENABLE)
+ 		return -EINVAL;
+ 
++	linkmode_copy(support, pl->supported);
+ 	config = pl->link_config;
+ 
+ 	/* Mask out unsupported advertisements */
+ 	linkmode_and(config.advertising, kset->link_modes.advertising,
+-		     pl->supported);
++		     support);
+ 
+ 	/* FIXME: should we reject autoneg if phy/mac does not support it? */
+ 	if (kset->base.autoneg == AUTONEG_DISABLE) {
+@@ -1161,7 +1163,7 @@ int phylink_ethtool_ksettings_set(struct
+ 		 * duplex.
+ 		 */
+ 		s = phy_lookup_setting(kset->base.speed, kset->base.duplex,
+-				       pl->supported,
++				       support,
+ 				       __ETHTOOL_LINK_MODE_MASK_NBITS, false);
+ 		if (!s)
+ 			return -EINVAL;
+@@ -1191,7 +1193,7 @@ int phylink_ethtool_ksettings_set(struct
+ 		__set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, config.advertising);
+ 	}
+ 
+-	if (phylink_validate(pl, pl->supported, &config))
++	if (phylink_validate(pl, support, &config))
+ 		return -EINVAL;
+ 
+ 	/* If autonegotiation is enabled, we must have an advertisement */
+@@ -1633,6 +1635,7 @@ static int phylink_sfp_module_insert(voi
+ {
+ 	struct phylink *pl = upstream;
+ 	__ETHTOOL_DECLARE_LINK_MODE_MASK(support) = { 0, };
++	__ETHTOOL_DECLARE_LINK_MODE_MASK(support1);
+ 	struct phylink_link_state config;
+ 	phy_interface_t iface;
+ 	int ret = 0;
+@@ -1660,6 +1663,8 @@ static int phylink_sfp_module_insert(voi
+ 		return ret;
+ 	}
+ 
++	linkmode_copy(support1, support);
++
+ 	iface = sfp_select_interface(pl->sfp_bus, id, config.advertising);
+ 	if (iface == PHY_INTERFACE_MODE_NA) {
+ 		netdev_err(pl->netdev,
+@@ -1669,7 +1674,7 @@ static int phylink_sfp_module_insert(voi
+ 	}
+ 
+ 	config.interface = iface;
+-	ret = phylink_validate(pl, support, &config);
++	ret = phylink_validate(pl, support1, &config);
+ 	if (ret) {
+ 		netdev_err(pl->netdev, "validation of %s/%s with support %*pb failed: %d\n",
+ 			   phylink_an_mode_str(MLO_AN_INBAND),