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drm/mgag200: Fix framebuffer pitch calculation 

The framebuffer pitch calculation needs to be done differently for bpp == 24
- check xf86-video-mga for reference.

Signed-off-by: Egbert Eich <eich@suse.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Takashi Iwai 2013-07-17 15:07:26 +02:00 committed by Dave Airlie
parent 3d5a1c5e30
commit da55839870
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/mgag200/mgag200_mode.c
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@ -877,7 +877,7 @@ static int mga_crtc_mode_set(struct drm_crtc *crtc,
pitch = crtc->fb->pitches[0] / (crtc->fb->bits_per_pixel / 8);
if (crtc->fb->bits_per_pixel == 24)
pitch = pitch >> (4 - bppshift);
pitch = (pitch * 3) >> (4 - bppshift);
else
pitch = pitch >> (4 - bppshift);