On Thu, Apr 10, 2014 at 02:18:06PM -0700, Matt Roper wrote:
> The src_w / src_h parameters to update_plane include a subpixel offset;
> we need to shift off the subpixel bits before comparing to CRTC size
> when checking for primary plane scaling.
>
> Signed-off-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
> ---
> drivers/gpu/drm/drm_plane_helper.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/drm_plane_helper.c b/drivers/gpu/drm/drm_plane_helper.c
> index e768d35..9eca283 100644
> --- a/drivers/gpu/drm/drm_plane_helper.c
> +++ b/drivers/gpu/drm/drm_plane_helper.c
> @@ -145,6 +145,8 @@ int drm_primary_helper_update(struct drm_plane *plane, struct drm_crtc *crtc,
> }
>
> /* Disallow scaling */
> + src_w >>= 16;
> + src_h >>= 16;
> if (crtc_w != src_w || crtc_h != src_h) {
> DRM_DEBUG_KMS("Can't scale primary plane\n");
> return -EINVAL;
> --
> 1.8.5.1
>
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--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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