This is a note to let you know that I've just added the patch titled
net: phy: micrel: set soft_reset callback to genphy_soft_reset for KSZ8081
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-phy-micrel-set-soft_reset-callback-to-genphy_soft_reset-for-ksz8081.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 764d31cacfe48440745c4bbb55a62ac9471c9f19 Mon Sep 17 00:00:00 2001
From: Christian Melki <christian.melki@xxxxxxxxxx>
Date: Wed, 24 Feb 2021 21:55:36 +0100
Subject: net: phy: micrel: set soft_reset callback to genphy_soft_reset for KSZ8081
From: Christian Melki <christian.melki@xxxxxxxxxx>
commit 764d31cacfe48440745c4bbb55a62ac9471c9f19 upstream.
Following a similar reinstate for the KSZ9031.
Older kernels would use the genphy_soft_reset if the PHY did not implement
a .soft_reset.
Bluntly removing that default may expose a lot of situations where various
PHYs/board implementations won't recover on various changes.
Like with this implementation during a 4.9.x to 5.4.x LTS transition.
I think it's a good thing to remove unwanted soft resets but wonder if it
did open a can of worms?
Atleast this fixes one iMX6 FEC/RMII/8081 combo.
Fixes: 6e2d85ec0559 ("net: phy: Stop with excessive soft reset")
Signed-off-by: Christian Melki <christian.melki@xxxxxxxxxx>
Reviewed-by: Andrew Lunn <andrew@xxxxxxx>
Link: https://lore.kernel.org/r/20210224205536.9349-1-christian.melki@xxxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Wadim Egorov <w.egorov@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/phy/micrel.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/net/phy/micrel.c
+++ b/drivers/net/phy/micrel.c
@@ -1096,6 +1096,7 @@ static struct phy_driver ksphy_driver[]
.probe = kszphy_probe,
.config_init = ksz8081_config_init,
.ack_interrupt = kszphy_ack_interrupt,
+ .soft_reset = genphy_soft_reset,
.config_intr = kszphy_config_intr,
.get_sset_count = kszphy_get_sset_count,
.get_strings = kszphy_get_strings,
Patches currently in stable-queue which might be from christian.melki@xxxxxxxxxx are
queue-5.4/net-phy-micrel-set-soft_reset-callback-to-genphy_soft_reset-for-ksz8081.patch
