drm/i915/vlv: reduce GT FIFO error info to a debug message

It indicates a probable BIOS bug, but it appears to be harmless, and
there's nothing the user can do about it anyway, so reduce to a debug
msg.  I've filed a bug with the BIOS folks about it anyway, so hopefully
they'll fix whatever GT SB read they were doing when the GT was off.

References: https://bugs.freedesktop.org/show_bug.cgi?id=69396
Signed-off-by: Jesse Barnes <[email protected]>
Signed-off-by: Daniel Vetter <[email protected]>

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 102fc498a12f63137f8a9ec3ec8599116baf8837..10054b58ee9272178f527fd6b56179df53d1bb30 100644 (file)
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -3804,7 +3804,8 @@ static void valleyview_enable_rps(struct drm_device *dev)
        WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock));
 
        if ((gtfifodbg = I915_READ(GTFIFODBG))) {
-               DRM_ERROR("GT fifo had a previous error %x\n", gtfifodbg);
+               DRM_DEBUG_DRIVER("GT fifo had a previous error %x\n",
+                                gtfifodbg);
                I915_WRITE(GTFIFODBG, gtfifodbg);
        }