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, 69 insertions, 0 deletions

diff --git a/target/linux/generic/backport-4.19/730-v5.5-net-sfp-allow-fault-processing-to-transition-to-othe.patch b/target/linux/generic/backport-4.19/730-v5.5-net-sfp-allow-fault-processing-to-transition-to-othe.patch
new file mode 100644
index 0000000000..6e34e6cc0f
--- /dev/null
+++ b/target/linux/generic/backport-4.19/730-v5.5-net-sfp-allow-fault-processing-to-transition-to-othe.patch
@@ -0,0 +1,69 @@
+From 2aa424ee7fbe43e2cd24e28c2f6388c4e1796bd2 Mon Sep 17 00:00:00 2001
+From: Russell King <rmk+kernel@armlinux.org.uk>
+Date: Fri, 18 Oct 2019 09:58:33 +0100
+Subject: [PATCH 628/660] net: sfp: allow fault processing to transition to
+ other states
+
+Add the next state to sfp_sm_fault() so that it can branch to other
+states. This will be necessary to improve the initialisation path.
+
+Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
+---
+ drivers/net/phy/sfp.c | 12 ++++++------
+ 1 file changed, 6 insertions(+), 6 deletions(-)
+
+--- a/drivers/net/phy/sfp.c
++++ b/drivers/net/phy/sfp.c
+@@ -1269,7 +1269,7 @@ static bool sfp_los_event_inactive(struc
+ 		event == SFP_E_LOS_LOW);
+ }
+ 
+-static void sfp_sm_fault(struct sfp *sfp, bool warn)
++static void sfp_sm_fault(struct sfp *sfp, unsigned int next_state, bool warn)
+ {
+ 	if (sfp->sm_retries && !--sfp->sm_retries) {
+ 		dev_err(sfp->dev,
+@@ -1279,7 +1279,7 @@ static void sfp_sm_fault(struct sfp *sfp
+ 		if (warn)
+ 			dev_err(sfp->dev, "module transmit fault indicated\n");
+ 
+-		sfp_sm_next(sfp, SFP_S_TX_FAULT, T_FAULT_RECOVER);
++		sfp_sm_next(sfp, next_state, T_FAULT_RECOVER);
+ 	}
+ }
+ 
+@@ -1619,14 +1619,14 @@ static void sfp_sm_main(struct sfp *sfp,
+ 
+ 	case SFP_S_INIT:
+ 		if (event == SFP_E_TIMEOUT && sfp->state & SFP_F_TX_FAULT)
+-			sfp_sm_fault(sfp, true);
++			sfp_sm_fault(sfp, SFP_S_TX_FAULT, true);
+ 		else if (event == SFP_E_TIMEOUT || event == SFP_E_TX_CLEAR)
+ 	init_done:	sfp_sm_link_check_los(sfp);
+ 		break;
+ 
+ 	case SFP_S_WAIT_LOS:
+ 		if (event == SFP_E_TX_FAULT)
+-			sfp_sm_fault(sfp, true);
++			sfp_sm_fault(sfp, SFP_S_TX_FAULT, true);
+ 		else if (sfp_los_event_inactive(sfp, event))
+ 			sfp_sm_link_up(sfp);
+ 		break;
+@@ -1634,7 +1634,7 @@ static void sfp_sm_main(struct sfp *sfp,
+ 	case SFP_S_LINK_UP:
+ 		if (event == SFP_E_TX_FAULT) {
+ 			sfp_sm_link_down(sfp);
+-			sfp_sm_fault(sfp, true);
++			sfp_sm_fault(sfp, SFP_S_TX_FAULT, true);
+ 		} else if (sfp_los_event_active(sfp, event)) {
+ 			sfp_sm_link_down(sfp);
+ 			sfp_sm_next(sfp, SFP_S_WAIT_LOS, 0);
+@@ -1650,7 +1650,7 @@ static void sfp_sm_main(struct sfp *sfp,
+ 
+ 	case SFP_S_REINIT:
+ 		if (event == SFP_E_TIMEOUT && sfp->state & SFP_F_TX_FAULT) {
+-			sfp_sm_fault(sfp, false);
++			sfp_sm_fault(sfp, SFP_S_TX_FAULT, false);
+ 		} else if (event == SFP_E_TIMEOUT || event == SFP_E_TX_CLEAR) {
+ 			dev_info(sfp->dev, "module transmit fault recovered\n");
+ 			sfp_sm_link_check_los(sfp);