[Intel-gfx] [PATCH] drm/i915/skl: Bypass debug message if scalers are not requested

[Tvrtko Ursulin]

From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Cc: Chandra Konduru <chandra.konduru at intel.com>
---
Up for discussion I suppose, but like it is, with typical drm.debug = 0xe,
it logs one line per cursor movement while the log would otherwise be quiet.
---
 drivers/gpu/drm/i915/intel_atomic.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_atomic.c b/drivers/gpu/drm/i915/intel_atomic.c
index 3c4b7cd..7284c6d 100644
--- a/drivers/gpu/drm/i915/intel_atomic.c
+++ b/drivers/gpu/drm/i915/intel_atomic.c
@@ -302,6 +302,9 @@ int intel_atomic_setup_scalers(struct drm_device *dev,
 	scaler_state = &crtc_state->scaler_state;
 	drm_state = crtc_state->base.state;
 
+	if (!scaler_state->scaler_users)
+		return 0;
+
 	num_scalers_need = hweight32(scaler_state->scaler_users);
 	DRM_DEBUG_KMS("crtc_state = %p need = %d avail = %d scaler_users = 0x%x\n",
 		crtc_state, num_scalers_need, intel_crtc->num_scalers,
-- 
2.3.5