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Message-Id: <20230710174007.2291013-1-robh@kernel.org>
Date: Mon, 10 Jul 2023 11:40:07 -0600
From: Rob Herring <robh@...nel.org>
To: Frank Rowand <frowand.list@...il.com>,
Michal Suchanek <msuchanek@...e.de>
Cc: dri-devel@...ts.freedesktop.org, linux-fbdev@...r.kernel.org,
stable@...r.kernel.org, Cyril Brulebois <cyril@...amax.com>,
Thomas Zimmermann <tzimmermann@...e.de>,
Helge Deller <deller@....de>, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] of: Preserve "of-display" device name for compatibility
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@...r.kernel.org
Cc: Cyril Brulebois <cyril@...amax.com>
Cc: Thomas Zimmermann <tzimmermann@...e.de>
Cc: Helge Deller <deller@....de>
Signed-off-by: Rob Herring <robh@...nel.org>
---
drivers/of/platform.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index 051e29b7ad2b..0c3475e7d2ff 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -552,7 +552,7 @@ static int __init of_platform_default_populate_init(void)
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;
--
2.40.1
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