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drm/nv10/plane: add downscaling restrictions

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Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ilia Mirkin 2013-11-15 11:26:42 -05:00 committed by Ben Skeggs
parent 92e5b0a2b1
commit 050828e956
1 changed files with 9 additions and 1 deletions
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10
drivers/gpu/drm/nouveau/dispnv04/overlay.c
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@ -112,7 +112,15 @@ nv10_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
format = ALIGN(src_w * 4, 0x100);
if (format > 0xffff)
return -EINVAL;
return -ERANGE;
if (dev->chipset >= 0x30) {
if (crtc_w < (src_w >> 1) || crtc_h < (src_h >> 1))
return -ERANGE;
} else {
if (crtc_w < (src_w >> 3) || crtc_h < (src_h >> 3))
return -ERANGE;
}
ret = nouveau_bo_pin(nv_fb->nvbo, TTM_PL_FLAG_VRAM);
if (ret)