linux-kernel - [PATCH 4.14 079/126] drm/msm/mdp5: rate limit pp done timeout warnings

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Message-Id: <20200310124208.976088269@linuxfoundation.org>
Date:   Tue, 10 Mar 2020 13:41:40 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Brian Masney <masneyb@...tation.org>,
        Rob Clark <robdclark@...omium.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.14 079/126] drm/msm/mdp5: rate limit pp done timeout warnings

From: Brian Masney <masneyb@...tation.org>

[ Upstream commit ef8c9809acb0805c991bba8bdd4749fc46d44a98 ]

Add rate limiting of the 'pp done time out' warnings since these
warnings can quickly fill the dmesg buffer.

Signed-off-by: Brian Masney <masneyb@...tation.org>
Signed-off-by: Rob Clark <robdclark@...omium.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c
index 4409776770012..99d356b6e9151 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c
@@ -1004,8 +1004,8 @@ static void mdp5_crtc_wait_for_pp_done(struct drm_crtc *crtc)
 	ret = wait_for_completion_timeout(&mdp5_crtc->pp_completion,
 						msecs_to_jiffies(50));
 	if (ret == 0)
-		dev_warn(dev->dev, "pp done time out, lm=%d\n",
-			 mdp5_cstate->pipeline.mixer->lm);
+		dev_warn_ratelimited(dev->dev, "pp done time out, lm=%d\n",
+				     mdp5_cstate->pipeline.mixer->lm);
 }
 
 static void mdp5_crtc_wait_for_flush_done(struct drm_crtc *crtc)
-- 
2.20.1