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drm/panic: Look up glyph shape with font helper

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Look up glyph shapes with font_data_glyph_buf(). Handle non-existing
glyphs gracefully. Enable extended ASCII by casting to unsigned char.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patch.msgid.link/20260529140759.529929-4-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2026-05-29 16:01:25 +02:00
parent 26cda6f065
commit 5b508d25d3
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/drm_panic.c
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@ -443,9 +443,11 @@ static void draw_txt_rectangle(struct drm_scanout_buffer *sb,
rec.x1 += (drm_rect_width(clip) - (line_len * font->width)) / 2;
for (j = 0; j < line_len; j++) {
src = drm_draw_get_char_bitmap(font, msg[i].txt[j], font_pitch);
src = font_data_glyph_buf(font->data, font->width, font->height,
(unsigned char)msg[i].txt[j]);
rec.x2 = rec.x1 + font->width;
drm_panic_blit(sb, &rec, src, font_pitch, 1, color);
if (src)
drm_panic_blit(sb, &rec, src, font_pitch, 1, color);
rec.x1 += font->width;
}
}