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drm/i915: Ensure state->crtc is non-NULL for plane updates 

When disabling a plane, it is legal to pass crtc = NULL.  Since planes
on Intel hardware are tied to a fixed CRTC, go ahead and set state->crtc
to the appropriate crtc in cases where it is passed to us as NULL.

In a future patch, we will start using the update handler for plane
disables, so this will help ensure we always have a non-NULL crtc
pointer to work with.

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Matt Roper 2014-12-01 15:40:17 -08:00 committed by Daniel Vetter
parent c59cb179aa
commit e614c3c946
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/intel_display.c
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@ -11898,7 +11898,7 @@ intel_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int ret;
state.base.crtc = crtc;
state.base.crtc = crtc ? crtc : plane->crtc;
state.base.fb = fb;
/* sample coordinates in 16.16 fixed point */