6.6-stable review patch. If anyone has any objections, please let me know.
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From: Thomas Zimmermann tzimmermann@suse.de
commit d1b163aa0749706379055e40a52cf7a851abf9dc upstream.
This reverts commit 60aebc9559492cea6a9625f514a8041717e3a2e4.
Commit 60aebc9559492cea ("drivers/firmware: Move sysfb_init() from device_initcall to subsys_initcall_sync") messes up initialization order of the graphics drivers and leads to blank displays on some systems. So revert the commit.
To make the display drivers fully independent from initialization order requires to track framebuffer memory by device and independently from the loaded drivers. The kernel currently lacks the infrastructure to do so.
Reported-by: Jaak Ristioja jaak@ristioja.ee Closes: https://lore.kernel.org/dri-devel/ZUnNi3q3yB3zZfTl@P70.localdomain/T/#t Reported-by: Huacai Chen chenhuacai@loongson.cn Closes: https://lore.kernel.org/dri-devel/20231108024613.2898921-1-chenhuacai@loongs... Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/10133 Signed-off-by: Thomas Zimmermann tzimmermann@suse.de Cc: Javier Martinez Canillas javierm@redhat.com Cc: Thorsten Leemhuis regressions@leemhuis.info Cc: Jani Nikula jani.nikula@linux.intel.com Cc: stable@vger.kernel.org # v6.5+ Reviewed-by: Javier Martinez Canillas javierm@redhat.com Acked-by: Jani Nikula jani.nikula@intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20240123120937.27736-1-tzimmer... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/firmware/sysfb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/firmware/sysfb.c +++ b/drivers/firmware/sysfb.c @@ -128,4 +128,4 @@ unlock_mutex: }
/* must execute after PCI subsystem for EFI quirks */ -subsys_initcall_sync(sysfb_init); +device_initcall(sysfb_init);