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drm: fsl-dcu: Fix no fb check bug

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For state->fb or state->crtc may be NULL in fsl_dcu_drm_plane_atomic_check
function, if so, return 0.

Signed-off-by: Meng Yi <meng.yi@nxp.com>
Signed-off-by: Jianwei Wang <jianwei.wang.chn@gmail.com>
Signed-off-by: Stefan Agner <stefan@agner.ch>
This commit is contained in:
Meng Yi 2016-01-06 12:12:05 +08:00 committed by Stefan Agner
parent bc66757a0e
commit a36c9867d4
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_plane.c
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@ -41,6 +41,9 @@ static int fsl_dcu_drm_plane_atomic_check(struct drm_plane *plane,
{
struct drm_framebuffer *fb = state->fb;
if (!state->fb || !state->crtc)
return 0;
switch (fb->pixel_format) {
case DRM_FORMAT_RGB565:
case DRM_FORMAT_RGB888: