linux-kernel - [PATCH] drm/msm/devfreq: Fix OPP refcnt leak

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Message-Id: <20211104222840.781314-1-robdclark@gmail.com>
Date:   Thu,  4 Nov 2021 15:28:40 -0700
From:   Rob Clark <robdclark@...il.com>
To:     dri-devel@...ts.freedesktop.org
Cc:     linux-arm-msm@...r.kernel.org, freedreno@...ts.freedesktop.org,
        Rob Clark <robdclark@...omium.org>,
        Douglas Anderson <dianders@...omium.org>,
        Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] drm/msm/devfreq: Fix OPP refcnt leak

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

Reported-by: Douglas Anderson <dianders@...omium.org>
Fixes: 9bc95570175a ("drm/msm: Devfreq tuning")
Signed-off-by: Rob Clark <robdclark@...omium.org>
---
 drivers/gpu/drm/msm/msm_gpu_devfreq.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/msm/msm_gpu_devfreq.c b/drivers/gpu/drm/msm/msm_gpu_devfreq.c
index d32b729b4616..9bf8600b6eea 100644
--- a/drivers/gpu/drm/msm/msm_gpu_devfreq.c
+++ b/drivers/gpu/drm/msm/msm_gpu_devfreq.c
@@ -20,8 +20,6 @@ static int msm_devfreq_target(struct device *dev, unsigned long *freq,
 	struct msm_gpu *gpu = dev_to_gpu(dev);
 	struct dev_pm_opp *opp;
 
-	opp = devfreq_recommended_opp(dev, freq, flags);
-
 	/*
 	 * If the GPU is idle, devfreq is not aware, so just ignore
 	 * it's requests
@@ -31,6 +29,8 @@ static int msm_devfreq_target(struct device *dev, unsigned long *freq,
 		return 0;
 	}
 
+	opp = devfreq_recommended_opp(dev, freq, flags);
+
 	if (IS_ERR(opp))
 		return PTR_ERR(opp);
 
-- 
2.31.1