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| author | Thomas Zimmermann <tzimmermann@suse.de> | 2024-02-12 10:06:15 +0100 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2024-02-14 10:09:21 +0100 |
| commit | 78aa89d1dfba1e3cf4a2e053afa3b4c4ec622371 (patch) | |
| tree | 5329f0fbf2d241600d9d4b46ca57c13a54e1dcbd /drivers/firmware | |
| parent | 784e27f2811884ab78edc713a4ef0d4deca9b668 (diff) | |
| download | linux-78aa89d1dfba1e3cf4a2e053afa3b4c4ec622371.tar.gz | |
firmware/sysfb: Update screen_info for relocated EFI framebuffers
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 commit 55d728a40d36 ("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
Diffstat (limited to 'drivers/firmware')
| -rw-r--r-- | drivers/firmware/sysfb.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/firmware/sysfb.c b/drivers/firmware/sysfb.c index 170b7cd0cfcbf..a6b48703dc9e9 100644 --- a/drivers/firmware/sysfb.c +++ b/drivers/firmware/sysfb.c @@ -118,6 +118,8 @@ static __init int sysfb_init(void) bool compatible; int ret = 0; + screen_info_apply_fixups(); + mutex_lock(&disable_lock); if (disabled) goto unlock_mutex; |