[PATCH 3/4] drm/panic: Look up glyph shape with font helper
From: Thomas Zimmermann <tzimmermann@suse.de>
Date: 2026-05-29 14:08:21
Also in:
dri-devel
Subsystem:
drm drivers, drm drivers and misc gpu patches, drm panic, the rest · Maintainers:
David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Jocelyn Falempe, Javier Martinez Canillas, Linus Torvalds
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> --- drivers/gpu/drm/drm_panic.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/drm_panic.c b/drivers/gpu/drm/drm_panic.c
index d6d3b8d85dea..e576c4791861 100644
--- a/drivers/gpu/drm/drm_panic.c
+++ b/drivers/gpu/drm/drm_panic.c@@ -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; } }
--
2.54.0