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drm/draw: fix color truncation in drm_draw_fill24

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[ Upstream commit 095232711f ]

The color parameter passed to drm_draw_fill24() was truncated to 16
bits, leading to an incorrect color drawn to the target iosys_map.
Fix this behavior, widening the parameter to 32 bits.

Fixes: 31fa2c1ca0 ("drm/panic: Move drawing functions to drm_draw")

Signed-off-by: Francesco Valla <francesco@valla.it>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://lore.kernel.org/r/20251003-drm_draw_fill24_fix-v1-1-8fb7c1c2a893@valla.it
Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Francesco Valla
2025-10-03 12:33:03 +02:00
committed by Greg Kroah-Hartman
parent 0fe5e3f5fb
commit f0edcc0ff6
2 changed files with 2 additions and 2 deletions
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2
drivers/gpu/drm/drm_draw.c
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@@ -127,7 +127,7 @@ EXPORT_SYMBOL(drm_draw_fill16);
void drm_draw_fill24(struct iosys_map *dmap, unsigned int dpitch, void drm_draw_fill24(struct iosys_map *dmap, unsigned int dpitch,
unsigned int height, unsigned int width, unsigned int height, unsigned int width,
u16 color) u32 color)
{ {
unsigned int y, x; unsigned int y, x;

2
drivers/gpu/drm/drm_draw_internal.h
View File

@@ -47,7 +47,7 @@ void drm_draw_fill16(struct iosys_map *dmap, unsigned int dpitch,
void drm_draw_fill24(struct iosys_map *dmap, unsigned int dpitch, void drm_draw_fill24(struct iosys_map *dmap, unsigned int dpitch,
unsigned int height, unsigned int width, unsigned int height, unsigned int width,
u16 color); u32 color);
void drm_draw_fill32(struct iosys_map *dmap, unsigned int dpitch, void drm_draw_fill32(struct iosys_map *dmap, unsigned int dpitch,
unsigned int height, unsigned int width, unsigned int height, unsigned int width,