[Intel-gfx] [PATCH 2/2] drm/i915: Tune down MCH_SSKPD values warning

Daniel Vetter daniel.vetter at ffwll.ch
Mon Aug 4 11:18:28 CEST 2014


Users often can't do anything about this since their vendors stopped
providing BIOS updates. Also we seem to be able to hack around it
with increased latency values, and thus far the only reports have
been for screens with really high resolutions. So tune it down to a
level where only developers can see it.

Also drop some of the end-user fluff.

Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
 drivers/gpu/drm/i915/intel_pm.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 4f879494e0c5..684dc5f60544 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -5235,11 +5235,9 @@ static void gen6_check_mch_setup(struct drm_device *dev)
 	uint32_t tmp;
 
 	tmp = I915_READ(MCH_SSKPD);
-	if ((tmp & MCH_SSKPD_WM0_MASK) != MCH_SSKPD_WM0_VAL) {
-		DRM_INFO("Wrong MCH_SSKPD value: 0x%08x\n", tmp);
-		DRM_INFO("This can cause pipe underruns and display issues.\n");
-		DRM_INFO("Please upgrade your BIOS to fix this.\n");
-	}
+	if ((tmp & MCH_SSKPD_WM0_MASK) != MCH_SSKPD_WM0_VAL)
+		DRM_DEBUG_KMS("Wrong MCH_SSKPD value: 0x%08x This can cause underruns.\n",
+			      tmp);
 }
 
 static void gen6_init_clock_gating(struct drm_device *dev)
-- 
2.0.1




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