kernel: copy kernel 4.19 code to 5.4

No changes were done to the patches while coping them. Currently they do
not apply on top of kernel 5.4.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

1 files changed, 254 insertions, 0 deletions

diff --git a/target/linux/generic/pending-5.4/748-net-phylink-split-link_an_mode-configured-and-curren.patch b/target/linux/generic/pending-5.4/748-net-phylink-split-link_an_mode-configured-and-curren.patch
new file mode 100644
index 0000000000..f30d37f0c6
--- /dev/null
+++ b/target/linux/generic/pending-5.4/748-net-phylink-split-link_an_mode-configured-and-curren.patch
@@ -0,0 +1,254 @@
+From d1339d6956f0255b6ce2412328a98945be8cc3ca Mon Sep 17 00:00:00 2001
+From: Russell King <rmk+kernel@armlinux.org.uk>
+Date: Sat, 16 Nov 2019 11:30:18 +0000
+Subject: [PATCH 651/660] net: phylink: split link_an_mode configured and
+ current settings
+
+Split link_an_mode between the configured setting and the current
+operating setting.  This is an important distinction to make when we
+need to configure PHY mode for a plugged SFP+ module that does not
+use in-band signalling.
+
+Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
+---
+ drivers/net/phy/phylink.c | 59 ++++++++++++++++++++-------------------
+ 1 file changed, 31 insertions(+), 28 deletions(-)
+
+--- a/drivers/net/phy/phylink.c
++++ b/drivers/net/phy/phylink.c
+@@ -48,7 +48,8 @@ struct phylink {
+ 	unsigned long phylink_disable_state; /* bitmask of disables */
+ 	struct phy_device *phydev;
+ 	phy_interface_t link_interface;	/* PHY_INTERFACE_xxx */
+-	u8 link_an_mode;		/* MLO_AN_xxx */
++	u8 cfg_link_an_mode;		/* MLO_AN_xxx */
++	u8 cur_link_an_mode;
+ 	u8 link_port;			/* The current non-phy ethtool port */
+ 	__ETHTOOL_DECLARE_LINK_MODE_MASK(supported);
+ 
+@@ -253,12 +254,12 @@ static int phylink_parse_mode(struct phy
+ 
+ 	dn = fwnode_get_named_child_node(fwnode, "fixed-link");
+ 	if (dn || fwnode_property_present(fwnode, "fixed-link"))
+-		pl->link_an_mode = MLO_AN_FIXED;
++		pl->cfg_link_an_mode = MLO_AN_FIXED;
+ 	fwnode_handle_put(dn);
+ 
+ 	if (fwnode_property_read_string(fwnode, "managed", &managed) == 0 &&
+ 	    strcmp(managed, "in-band-status") == 0) {
+-		if (pl->link_an_mode == MLO_AN_FIXED) {
++		if (pl->cfg_link_an_mode == MLO_AN_FIXED) {
+ 			netdev_err(pl->netdev,
+ 				   "can't use both fixed-link and in-band-status\n");
+ 			return -EINVAL;
+@@ -270,7 +271,7 @@ static int phylink_parse_mode(struct phy
+ 		phylink_set(pl->supported, Asym_Pause);
+ 		phylink_set(pl->supported, Pause);
+ 		pl->link_config.an_enabled = true;
+-		pl->link_an_mode = MLO_AN_INBAND;
++		pl->cfg_link_an_mode = MLO_AN_INBAND;
+ 
+ 		switch (pl->link_config.interface) {
+ 		case PHY_INTERFACE_MODE_SGMII:
+@@ -330,14 +331,14 @@ static void phylink_mac_config(struct ph
+ {
+ 	netdev_dbg(pl->netdev,
+ 		   "%s: mode=%s/%s/%s/%s adv=%*pb pause=%02x link=%u an=%u\n",
+-		   __func__, phylink_an_mode_str(pl->link_an_mode),
++		   __func__, phylink_an_mode_str(pl->cur_link_an_mode),
+ 		   phy_modes(state->interface),
+ 		   phy_speed_to_str(state->speed),
+ 		   phy_duplex_to_str(state->duplex),
+ 		   __ETHTOOL_LINK_MODE_MASK_NBITS, state->advertising,
+ 		   state->pause, state->link, state->an_enabled);
+ 
+-	pl->ops->mac_config(pl->netdev, pl->link_an_mode, state);
++	pl->ops->mac_config(pl->netdev, pl->cur_link_an_mode, state);
+ }
+ 
+ static void phylink_mac_config_up(struct phylink *pl,
+@@ -446,7 +447,7 @@ static void phylink_resolve(struct work_
+ 	} else if (pl->mac_link_dropped) {
+ 		link_state.link = false;
+ 	} else {
+-		switch (pl->link_an_mode) {
++		switch (pl->cur_link_an_mode) {
+ 		case MLO_AN_PHY:
+ 			link_state = pl->phy_state;
+ 			phylink_resolve_flow(pl, &link_state);
+@@ -483,12 +484,12 @@ static void phylink_resolve(struct work_
+ 	if (link_state.link != netif_carrier_ok(ndev)) {
+ 		if (!link_state.link) {
+ 			netif_carrier_off(ndev);
+-			pl->ops->mac_link_down(ndev, pl->link_an_mode,
++			pl->ops->mac_link_down(ndev, pl->cur_link_an_mode,
+ 					       pl->cur_interface);
+ 			netdev_info(ndev, "Link is Down\n");
+ 		} else {
+ 			pl->cur_interface = link_state.interface;
+-			pl->ops->mac_link_up(ndev, pl->link_an_mode,
++			pl->ops->mac_link_up(ndev, pl->cur_link_an_mode,
+ 					     pl->cur_interface, pl->phydev);
+ 
+ 			netif_carrier_on(ndev);
+@@ -610,7 +611,7 @@ struct phylink *phylink_create(struct ne
+ 		return ERR_PTR(ret);
+ 	}
+ 
+-	if (pl->link_an_mode == MLO_AN_FIXED) {
++	if (pl->cfg_link_an_mode == MLO_AN_FIXED) {
+ 		ret = phylink_parse_fixedlink(pl, fwnode);
+ 		if (ret < 0) {
+ 			kfree(pl);
+@@ -618,6 +619,8 @@ struct phylink *phylink_create(struct ne
+ 		}
+ 	}
+ 
++	pl->cur_link_an_mode = pl->cfg_link_an_mode;
++
+ 	ret = phylink_register_sfp(pl, fwnode);
+ 	if (ret < 0) {
+ 		kfree(pl);
+@@ -733,8 +736,8 @@ static int phylink_bringup_phy(struct ph
+ static int phylink_attach_phy(struct phylink *pl, struct phy_device *phy,
+ 			      phy_interface_t interface)
+ {
+-	if (WARN_ON(pl->link_an_mode == MLO_AN_FIXED ||
+-		    (pl->link_an_mode == MLO_AN_INBAND &&
++	if (WARN_ON(pl->cfg_link_an_mode == MLO_AN_FIXED ||
++		    (pl->cfg_link_an_mode == MLO_AN_INBAND &&
+ 		     phy_interface_mode_is_8023z(interface))))
+ 		return -EINVAL;
+ 
+@@ -801,8 +804,8 @@ int phylink_of_phy_connect(struct phylin
+ 	int ret;
+ 
+ 	/* Fixed links and 802.3z are handled without needing a PHY */
+-	if (pl->link_an_mode == MLO_AN_FIXED ||
+-	    (pl->link_an_mode == MLO_AN_INBAND &&
++	if (pl->cfg_link_an_mode == MLO_AN_FIXED ||
++	    (pl->cfg_link_an_mode == MLO_AN_INBAND &&
+ 	     phy_interface_mode_is_8023z(pl->link_interface)))
+ 		return 0;
+ 
+@@ -813,7 +816,7 @@ int phylink_of_phy_connect(struct phylin
+ 		phy_node = of_parse_phandle(dn, "phy-device", 0);
+ 
+ 	if (!phy_node) {
+-		if (pl->link_an_mode == MLO_AN_PHY)
++		if (pl->cfg_link_an_mode == MLO_AN_PHY)
+ 			return -ENODEV;
+ 		return 0;
+ 	}
+@@ -876,7 +879,7 @@ int phylink_fixed_state_cb(struct phylin
+ 	/* It does not make sense to let the link be overriden unless we use
+ 	 * MLO_AN_FIXED
+ 	 */
+-	if (pl->link_an_mode != MLO_AN_FIXED)
++	if (pl->cfg_link_an_mode != MLO_AN_FIXED)
+ 		return -EINVAL;
+ 
+ 	mutex_lock(&pl->state_mutex);
+@@ -926,7 +929,7 @@ void phylink_start(struct phylink *pl)
+ 	ASSERT_RTNL();
+ 
+ 	netdev_info(pl->netdev, "configuring for %s/%s link mode\n",
+-		    phylink_an_mode_str(pl->link_an_mode),
++		    phylink_an_mode_str(pl->cur_link_an_mode),
+ 		    phy_modes(pl->link_config.interface));
+ 
+ 	/* Always set the carrier off */
+@@ -948,7 +951,7 @@ void phylink_start(struct phylink *pl)
+ 	clear_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state);
+ 	phylink_run_resolve(pl);
+ 
+-	if (pl->link_an_mode == MLO_AN_FIXED && pl->link_gpio) {
++	if (pl->cfg_link_an_mode == MLO_AN_FIXED && pl->link_gpio) {
+ 		int irq = gpiod_to_irq(pl->link_gpio);
+ 
+ 		if (irq > 0) {
+@@ -963,7 +966,7 @@ void phylink_start(struct phylink *pl)
+ 		if (irq <= 0)
+ 			mod_timer(&pl->link_poll, jiffies + HZ);
+ 	}
+-	if (pl->link_an_mode == MLO_AN_FIXED && pl->get_fixed_state)
++	if (pl->cfg_link_an_mode == MLO_AN_FIXED && pl->get_fixed_state)
+ 		mod_timer(&pl->link_poll, jiffies + HZ);
+ 	if (pl->phydev)
+ 		phy_start(pl->phydev);
+@@ -1090,7 +1093,7 @@ int phylink_ethtool_ksettings_get(struct
+ 
+ 	linkmode_copy(kset->link_modes.supported, pl->supported);
+ 
+-	switch (pl->link_an_mode) {
++	switch (pl->cur_link_an_mode) {
+ 	case MLO_AN_FIXED:
+ 		/* We are using fixed settings. Report these as the
+ 		 * current link settings - and note that these also
+@@ -1163,7 +1166,7 @@ int phylink_ethtool_ksettings_set(struct
+ 		/* If we have a fixed link (as specified by firmware), refuse
+ 		 * to change link parameters.
+ 		 */
+-		if (pl->link_an_mode == MLO_AN_FIXED &&
++		if (pl->cur_link_an_mode == MLO_AN_FIXED &&
+ 		    (s->speed != pl->link_config.speed ||
+ 		     s->duplex != pl->link_config.duplex))
+ 			return -EINVAL;
+@@ -1175,7 +1178,7 @@ int phylink_ethtool_ksettings_set(struct
+ 		__clear_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, config.advertising);
+ 	} else {
+ 		/* If we have a fixed link, refuse to enable autonegotiation */
+-		if (pl->link_an_mode == MLO_AN_FIXED)
++		if (pl->cur_link_an_mode == MLO_AN_FIXED)
+ 			return -EINVAL;
+ 
+ 		config.speed = SPEED_UNKNOWN;
+@@ -1217,7 +1220,7 @@ int phylink_ethtool_ksettings_set(struct
+ 	 * configuration. For a fixed link, this isn't able to change any
+ 	 * parameters, which just leaves inband mode.
+ 	 */
+-	if (pl->link_an_mode == MLO_AN_INBAND &&
++	if (pl->cur_link_an_mode == MLO_AN_INBAND &&
+ 	    !test_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state)) {
+ 		phylink_mac_config(pl, &pl->link_config);
+ 		phylink_mac_an_restart(pl);
+@@ -1307,7 +1310,7 @@ int phylink_ethtool_set_pauseparam(struc
+ 				   pause->tx_pause);
+ 	} else if (!test_bit(PHYLINK_DISABLE_STOPPED,
+ 			     &pl->phylink_disable_state)) {
+-		switch (pl->link_an_mode) {
++		switch (pl->cur_link_an_mode) {
+ 		case MLO_AN_FIXED:
+ 			/* Should we allow fixed links to change against the config? */
+ 			phylink_resolve_flow(pl, config);
+@@ -1496,7 +1499,7 @@ static int phylink_mii_read(struct phyli
+ 	struct phylink_link_state state;
+ 	int val = 0xffff;
+ 
+-	switch (pl->link_an_mode) {
++	switch (pl->cur_link_an_mode) {
+ 	case MLO_AN_FIXED:
+ 		if (phy_id == 0) {
+ 			phylink_get_fixed_state(pl, &state);
+@@ -1524,7 +1527,7 @@ static int phylink_mii_read(struct phyli
+ static int phylink_mii_write(struct phylink *pl, unsigned int phy_id,
+ 			     unsigned int reg, unsigned int val)
+ {
+-	switch (pl->link_an_mode) {
++	switch (pl->cur_link_an_mode) {
+ 	case MLO_AN_FIXED:
+ 		break;
+ 
+@@ -1698,10 +1701,10 @@ static int phylink_sfp_module_insert(voi
+ 		linkmode_copy(pl->link_config.advertising, config.advertising);
+ 	}
+ 
+-	if (pl->link_an_mode != MLO_AN_INBAND ||
++	if (pl->cur_link_an_mode != MLO_AN_INBAND ||
+ 	    pl->link_config.interface != config.interface) {
+ 		pl->link_config.interface = config.interface;
+-		pl->link_an_mode = MLO_AN_INBAND;
++		pl->cur_link_an_mode = MLO_AN_INBAND;
+ 
+ 		changed = true;
+