drm/sysfb: simpledrm: Improve framebuffer-size validation

Browse source

Validate the framebuffer size from the firmware against the
limitations of struct drm_display_mode. The type only stores sizes
in 16-bit fields. Fail probing on errors.

v2:
- remove unused function simplefb_get_validated_int0() (Sashiko)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Fixes: 11e8f5fd22 ("drm: Add simpledrm driver")
Cc: <stable@vger.kernel.org> # v5.14+
Fixes: 11e8f5fd22 ("drm: Add simpledrm driver")
Link: https://patch.msgid.link/20260625094509.157581-2-tzimmermann@suse.de

...

This commit is contained in:

Thomas Zimmermann 2026-06-25 11:39:33 +02:00

parent cc79eaf8ee

commit 03f1a3545b

1 changed files with 4 additions and 11 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

15

drivers/gpu/drm/sysfb/simpledrm.c

View file