In the subject: s/Force//
On Wed, 24 Oct 2018 12:05:04 +0200
Boris Brezillon <[email protected]> wrote:
> For the YUV conversion to work properly, ->x_scaling[0,1] should never
> be set to VC4_SCALING_NONE, but vc4_get_scaling_mode() might return
> VC4_SCALING_NONE if the horizontal scaling ratio exactly matches the
> horizontal subsampling factor. Add a test to turn VC4_SCALING_NONE
> into VC4_SCALING_PPF when that happens.
>
> Fixes: fc04023fafec ("drm/vc4: Add support for YUV planes.")
> Signed-off-by: Boris Brezillon <[email protected]>
> ---
>
> The Cc-stable tag has been omitted on purpose: a few things have
> changed in this portion of code and backporting this fix is not
> trivial. Since noone complained so far, let's not bother backporting
> it.
> ---
> drivers/gpu/drm/vc4/vc4_plane.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/gpu/drm/vc4/vc4_plane.c b/drivers/gpu/drm/vc4/vc4_plane.c
> index 32b7b9f47c5d..5950e6b6b7f0 100644
> --- a/drivers/gpu/drm/vc4/vc4_plane.c
> +++ b/drivers/gpu/drm/vc4/vc4_plane.c
> @@ -320,6 +320,9 @@ static int vc4_plane_setup_clipping_and_scaling(struct
> drm_plane_state *state)
> */
> if (vc4_state->x_scaling[0] == VC4_SCALING_NONE)
> vc4_state->x_scaling[0] = VC4_SCALING_PPF;
> +
> + if (vc4_state->x_scaling[1] == VC4_SCALING_NONE)
> + vc4_state->x_scaling[1] = VC4_SCALING_PPF;
> } else {
> vc4_state->is_yuv = false;
> vc4_state->x_scaling[1] = VC4_SCALING_NONE;
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