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, 41 insertions, 0 deletions

diff --git a/target/linux/generic/backport-5.4/721-v5.5-net-sfp-move-tx-disable-on-device-down-to-main-state.patch b/target/linux/generic/backport-5.4/721-v5.5-net-sfp-move-tx-disable-on-device-down-to-main-state.patch
new file mode 100644
index 0000000000..5b3caaf0fd
--- /dev/null
+++ b/target/linux/generic/backport-5.4/721-v5.5-net-sfp-move-tx-disable-on-device-down-to-main-state.patch
@@ -0,0 +1,41 @@
+From 7e89b737c97a9e7a81dd1584000bc136b92f12fd Mon Sep 17 00:00:00 2001
+From: Russell King <rmk+kernel@armlinux.org.uk>
+Date: Fri, 11 Oct 2019 22:14:47 +0100
+Subject: [PATCH 619/660] net: sfp: move tx disable on device down to main
+ state machine
+
+Move the tx disable assertion on device down to the main state
+machine.
+
+Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
+---
+ drivers/net/phy/sfp.c | 10 ++--------
+ 1 file changed, 2 insertions(+), 8 deletions(-)
+
+--- a/drivers/net/phy/sfp.c
++++ b/drivers/net/phy/sfp.c
+@@ -1489,15 +1489,8 @@ static void sfp_sm_device(struct sfp *sf
+ 		break;
+ 
+ 	case SFP_DEV_UP:
+-		if (event == SFP_E_DEV_DOWN) {
+-			/* If the module has a PHY, avoid raising TX disable
+-			 * as this resets the PHY. Otherwise, raise it to
+-			 * turn the laser off.
+-			 */
+-			if (!sfp->mod_phy)
+-				sfp_module_tx_disable(sfp);
++		if (event == SFP_E_DEV_DOWN)
+ 			sfp->sm_dev_state = SFP_DEV_DOWN;
+-		}
+ 		break;
+ 	}
+ }
+@@ -1559,6 +1552,7 @@ static void sfp_sm_main(struct sfp *sfp,
+ 			sfp_sm_link_down(sfp);
+ 		if (sfp->mod_phy)
+ 			sfp_sm_phy_detach(sfp);
++		sfp_module_tx_disable(sfp);
+ 		sfp_sm_next(sfp, SFP_S_DOWN, 0);
+ 		return;
+ 	}