diff mbox series

[v3,04/10] drm/framebuffer: Use actual bpp for DRM_IOCTL_MODE_GETFB

Message ID b612780feef200b7f914a674db28ed227e7cdc64.1657294931.git.geert@linux-m68k.org
State New
Headers show
Series drm: Add support for low-color frame buffer formats | expand

Commit Message

Geert Uytterhoeven July 8, 2022, 6:20 p.m. UTC 
When userspace queries the properties of a frame buffer, the number of
bits per pixel is derived from the deprecated drm_format_info.cpp[]
field, which does not take into account block sizes.

Fix this by using the actual number of bits per pixel instead.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
---
v3:
  - Add Reviewed-by,

v2:
  - No changes.
---
 drivers/gpu/drm/drm_framebuffer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/drm_framebuffer.c b/drivers/gpu/drm/drm_framebuffer.c
index 4562a8b865792456..9899bf1485b299ad 100644
--- a/drivers/gpu/drm/drm_framebuffer.c
+++ b/drivers/gpu/drm/drm_framebuffer.c
@@ -530,7 +530,7 @@  int drm_mode_getfb(struct drm_device *dev,
 	r->height = fb->height;
 	r->width = fb->width;
 	r->depth = fb->format->depth;
-	r->bpp = fb->format->cpp[0] * 8;
+	r->bpp = drm_format_info_bpp(fb->format, 0);
 	r->pitch = fb->pitches[0];
 
 	/* GET_FB() is an unprivileged ioctl so we must not return a