This is a note to let you know that I've just added the patch titled
net: phy: meson-gxl: Add generic dummy stubs for MMD register access
to the 4.19-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-meson-gxl-add-generic-dummy-stubs-for-mmd-register-access.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From afc2336f89dc0fc0ef25b92366814524b0fd90fb Mon Sep 17 00:00:00 2001
From: Chris Healy <healych@xxxxxxxxxx>
Date: Mon, 30 Jan 2023 15:14:02 -0800
Subject: net: phy: meson-gxl: Add generic dummy stubs for MMD register access
From: Chris Healy <healych@xxxxxxxxxx>
commit afc2336f89dc0fc0ef25b92366814524b0fd90fb upstream.
The Meson G12A Internal PHY does not support standard IEEE MMD extended
register access, therefore add generic dummy stubs to fail the read and
write MMD calls. This is necessary to prevent the core PHY code from
erroneously believing that EEE is supported by this PHY even though this
PHY does not support EEE, as MMD register access returns all FFFFs.
Fixes: 5c3407abb338 ("net: phy: meson-gxl: add g12a support")
Reviewed-by: Heiner Kallweit <hkallweit1@xxxxxxxxx>
Signed-off-by: Chris Healy <healych@xxxxxxxxxx>
Reviewed-by: Jerome Brunet <jbrunet@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230130231402.471493-1-cphealy@xxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/phy/meson-gxl.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/net/phy/meson-gxl.c
+++ b/drivers/net/phy/meson-gxl.c
@@ -258,6 +258,8 @@ static struct phy_driver meson_gxl_phy[]
.config_intr = meson_gxl_config_intr,
.suspend = genphy_suspend,
.resume = genphy_resume,
+ .read_mmd = genphy_read_mmd_unsupported,
+ .write_mmd = genphy_write_mmd_unsupported,
},
};
Patches currently in stable-queue which might be from healych@xxxxxxxxxx are
queue-4.19/net-phy-meson-gxl-add-generic-dummy-stubs-for-mmd-register-access.patch
