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Thomas Zimmermann
a168da3182
[ Upstream commit78aa89d1df] On ARM PCI systems, the PCI hierarchy might be reconfigured during boot and the firmware framebuffer might move as a result of that. The values in screen_info will then be invalid. Work around this problem by tracking the framebuffer's initial location before it get relocated; then fix the screen_info state between reloaction and creating the firmware framebuffer's device. This functionality has been lifted from efifb. See the commit message of commit55d728a40d("efi/fb: Avoid reconfiguration of BAR that covers the framebuffer") for more information. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240212090736.11464-8-tzimmermann@suse.de Stable-dep-of:c2bc958b2b("fbdev: vesafb: Detect VGA compatibility from screen info's VESA attributes") Signed-off-by: Sasha Levin <sashal@kernel.org>