releases/4.14.93/drm-vc4-set-is_yuv-to-false-when-num_planes-1.patch

   1 From 2b02a05bdc3a62d36e0d0b015351897109e25991 Mon Sep 17 00:00:00 2001
   2 From: Boris Brezillon <boris.brezillon@bootlin.com>
   3 Date: Tue, 9 Oct 2018 15:24:46 +0200
   4 Subject: drm/vc4: Set ->is_yuv to false when num_planes == 1
   5
   6 From: Boris Brezillon <boris.brezillon@bootlin.com>
   7
   8 commit 2b02a05bdc3a62d36e0d0b015351897109e25991 upstream.
   9
  10 When vc4_plane_state is duplicated ->is_yuv is left assigned to its
  11 previous value, and we never set it back to false when switching to
  12 a non-YUV format.
  13
  14 Fix that by setting ->is_yuv to false in the 'num_planes == 1' branch
  15 of the vc4_plane_setup_clipping_and_scaling() function.
  16
  17 Fixes: fc04023fafecf ("drm/vc4: Add support for YUV planes.")
  18 Cc: <stable@vger.kernel.org>
  19 Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
  20 Reviewed-by: Eric Anholt <eric@anholt.net>
  21 Link: https://patchwork.freedesktop.org/patch/msgid/20181009132446.21960-1-boris.brezillon@bootlin.com
  22 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  23
  24 ---
  25  drivers/gpu/drm/vc4/vc4_plane.c |    1 +
  26  1 file changed, 1 insertion(+)
  27
  28 --- a/drivers/gpu/drm/vc4/vc4_plane.c
  29 +++ b/drivers/gpu/drm/vc4/vc4_plane.c
  30 @@ -354,6 +354,7 @@ static int vc4_plane_setup_clipping_and_
  31                 if (vc4_state->is_unity)
  32                         vc4_state->x_scaling[0] = VC4_SCALING_PPF;
  33         } else {
  34 +               vc4_state->is_yuv = false;
  35                 vc4_state->x_scaling[1] = VC4_SCALING_NONE;
  36                 vc4_state->y_scaling[1] = VC4_SCALING_NONE;
  37         }