From 86c1c87d0e6241cbe35bd52badfc84b154e1b959 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Thu, 26 Jul 2018 17:15:27 +0100
Subject: [PATCH] drm/i915: Downgrade Gen9 Plane WM latency error
Git-commit: 86c1c87d0e6241cbe35bd52badfc84b154e1b959
Patch-mainline: v4.20-rc1
References: bsc#1051510 bsc#1113956
According to intel_read_wm_latency() it is perfectly legal for one WM
and all subsequent levels to be 0 (and the deeper powersaving states
disabled), so don't shout *ERROR*, over and over again.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180726161527.10516-1-chris@chris-wilson.co.uk
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpu/drm/i915/intel_pm.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index f175923939ae..8a4152244571 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -2942,8 +2942,8 @@ static void intel_print_wm_latency(struct drm_i915_private *dev_priv,
unsigned int latency = wm[level];
if (latency == 0) {
- DRM_ERROR("%s WM%d latency not provided\n",
- name, level);
+ DRM_DEBUG_KMS("%s WM%d latency not provided\n",
+ name, level);
continue;
}
--
2.16.4