linux-kernel - [PATCH 4.19 054/168] drm/msm: ratelimit crtc event overflow error

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Message-Id: <20200817143736.449384458@linuxfoundation.org>
Date:   Mon, 17 Aug 2020 17:16:25 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Rob Clark <robdclark@...omium.org>,
        Abhinav Kumar <abhinavk@...eaurora.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 054/168] drm/msm: ratelimit crtc event overflow error

From: Rob Clark <robdclark@...omium.org>

[ Upstream commit 5e16372b5940b1fecc3cc887fc02a50ba148d373 ]

This can happen a lot when things go pear shaped.  Lets not flood dmesg
when this happens.

Signed-off-by: Rob Clark <robdclark@...omium.org>
Reviewed-by: Abhinav Kumar <abhinavk@...eaurora.org>
Signed-off-by: Rob Clark <robdclark@...omium.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index 4752f08f0884c..3c3b7f7013e87 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -659,7 +659,7 @@ static void dpu_crtc_frame_event_cb(void *data, u32 event)
 	spin_unlock_irqrestore(&dpu_crtc->spin_lock, flags);
 
 	if (!fevent) {
-		DRM_ERROR("crtc%d event %d overflow\n", crtc->base.id, event);
+		DRM_ERROR_RATELIMITED("crtc%d event %d overflow\n", crtc->base.id, event);
 		return;
 	}
 
-- 
2.25.1