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drm/i915: Fix enabled_planes bitmask

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The enabled_planes bitmask was supposed to track logically enabled
planes (ie. fb!=NULL and crtc!=NULL), but instead we end up putting
even disabled planes into the bitmask since
intel_plane_atomic_check_with_state() only takes the early exit
if the plane was disabled and stays disabled. I think I misread
the early said codepath to exit whenever the plane is logically
disabled, which is not true.

So let's fix this up properly and set the bit only when the plane
actually is logically enabled.

Cc: Manasi Navare <manasi.d.navare@intel.com>
Fixes: ee42ec19ca2e ("drm/i915: Track logically enabled planes for hw state")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210305153610.12177-2-ville.syrjala@linux.intel.com
Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>
This commit is contained in:
Ville Syrjälä 2021-03-05 17:36:05 +02:00
parent 3a913fa535
commit 97bc7ffa1b
1 changed files with 3 additions and 2 deletions
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5
drivers/gpu/drm/i915/display/intel_atomic_plane.c
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@ -317,12 +317,13 @@ int intel_plane_atomic_check_with_state(const struct intel_crtc_state *old_crtc_
if (!new_plane_state->hw.crtc && !old_plane_state->hw.crtc)
return 0;
new_crtc_state->enabled_planes |= BIT(plane->id);
ret = plane->check_plane(new_crtc_state, new_plane_state);
if (ret)
return ret;
if (fb)
new_crtc_state->enabled_planes |= BIT(plane->id);
/* FIXME pre-g4x don't work like this */
if (new_plane_state->uapi.visible)
new_crtc_state->active_planes |= BIT(plane->id);