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drm/panic: Fix drawing the logo on a small narrow screen

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If the logo width is bigger than the framebuffer width, and the
height is big enough to hold the logo and the message, it will draw
at x coordinate that are higher than the width, and ends up in a
corrupted image.

Fixes: 4b570ac2eb ("drm/rect: Add drm_rect_overlap()")
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://lore.kernel.org/r/20251009122955.562888-2-jfalempe@redhat.com
Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com>
This commit is contained in:
Jocelyn Falempe 2025-10-09 14:24:48 +02:00
parent 4eabd0d879
commit 179753aa5b
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/drm_panic.c
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@ -429,6 +429,9 @@ static void drm_panic_logo_rect(struct drm_rect *rect, const struct font_desc *f
static void drm_panic_logo_draw(struct drm_scanout_buffer *sb, struct drm_rect *rect,
const struct font_desc *font, u32 fg_color)
{
if (rect->x2 > sb->width || rect->y2 > sb->height)
return;
if (logo_mono)
drm_panic_blit(sb, rect, logo_mono->data,
DIV_ROUND_UP(drm_rect_width(rect), 8), 1, fg_color);