This is a note to let you know that I've just added the patch titled
of: Preserve "of-display" device name for compatibility
to the 6.4-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:
of-preserve-of-display-device-name-for-compatibility.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 0bb8f49cd2cc8cb32ac51189ff9fcbe7ec3d9d65 Mon Sep 17 00:00:00 2001
From: Rob Herring <robh@xxxxxxxxxx>
Date: Mon, 10 Jul 2023 11:40:07 -0600
Subject: of: Preserve "of-display" device name for compatibility
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From: Rob Herring <robh@xxxxxxxxxx>
commit 0bb8f49cd2cc8cb32ac51189ff9fcbe7ec3d9d65 upstream.
Since commit 241d2fb56a18 ("of: Make OF framebuffer device names unique"),
as spotted by Frédéric Bonnard, the historical "of-display" device is
gone: the updated logic creates "of-display.0" instead, then as many
"of-display.N" as required.
This means that offb no longer finds the expected device, which prevents
the Debian Installer from setting up its interface, at least on ppc64el.
Fix this by keeping "of-display" for the first device and "of-display.N"
for subsequent devices.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=217328
Link: https://bugs.debian.org/1033058
Fixes: 241d2fb56a18 ("of: Make OF framebuffer device names unique")
Cc: stable@xxxxxxxxxxxxxxx
Cc: Cyril Brulebois <cyril@xxxxxxxxxxx>
Cc: Thomas Zimmermann <tzimmermann@xxxxxxx>
Cc: Helge Deller <deller@xxxxxx>
Acked-by: Helge Deller <deller@xxxxxx>
Acked-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
Reviewed-by: Michal Suchánek <msuchanek@xxxxxxx>
Link: https://lore.kernel.org/r/20230710174007.2291013-1-robh@xxxxxxxxxx
Signed-off-by: Rob Herring <robh@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/of/platform.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -553,7 +553,7 @@ static int __init of_platform_default_po
if (!of_get_property(node, "linux,opened", NULL) ||
!of_get_property(node, "linux,boot-display", NULL))
continue;
- dev = of_platform_device_create(node, "of-display.0", NULL);
+ dev = of_platform_device_create(node, "of-display", NULL);
of_node_put(node);
if (WARN_ON(!dev))
return -ENOMEM;
Patches currently in stable-queue which might be from robh@xxxxxxxxxx are
queue-6.4/of-preserve-of-display-device-name-for-compatibility.patch
