[PATCH v2 04/13] drm/i915: Warn about use_flip==true in MMIO commit codepaths

[Ville Syrjala <ville.syrjala@linux.intel.com>]

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

Warn if use_flipq==true in intel_pipe_update_{start,end}().
These functions are part of the MMIO based commit codepath,
so should never get there with use_flipq==true.

We were also warning about use_dsb==true for the same reason.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_crtc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_crtc.c b/drivers/gpu/drm/i915/display/intel_crtc.c
index c7a85dce6aca..58a99c265598 100644
--- a/drivers/gpu/drm/i915/display/intel_crtc.c
+++ b/drivers/gpu/drm/i915/display/intel_crtc.c
@@ -596,7 +596,7 @@ void intel_pipe_update_start(struct intel_atomic_state *state,
 	struct intel_vblank_evade_ctx evade;
 	int scanline;
 
-	drm_WARN_ON(display->drm, new_crtc_state->use_dsb);
+	drm_WARN_ON(display->drm, new_crtc_state->use_dsb || new_crtc_state->use_flipq);
 
 	intel_psr_lock(new_crtc_state);
 
@@ -735,7 +735,7 @@ void intel_pipe_update_end(struct intel_atomic_state *state,
 	u32 end_vbl_count = intel_crtc_get_vblank_counter(crtc);
 	ktime_t end_vbl_time = ktime_get();
 
-	drm_WARN_ON(display->drm, new_crtc_state->use_dsb);
+	drm_WARN_ON(display->drm, new_crtc_state->use_dsb || new_crtc_state->use_flipq);
 
 	if (new_crtc_state->do_async_flip)
 		goto out;
-- 
2.54.0