[PATCH v2] drm/msm/devfreq: Fix OPP refcnt leak
Akhil P Oommen
akhilpo at codeaurora.org
Fri Nov 5 21:34:15 UTC 2021
On 11/6/2021 1:50 AM, Rob Clark wrote:
> From: Rob Clark <robdclark at chromium.org>
>
> Reported-by: Douglas Anderson <dianders at chromium.org>
> Fixes: 9bc95570175a ("drm/msm: Devfreq tuning")
> Signed-off-by: Rob Clark <robdclark at chromium.org>
> ---
> drivers/gpu/drm/msm/msm_gpu_devfreq.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/drivers/gpu/drm/msm/msm_gpu_devfreq.c b/drivers/gpu/drm/msm/msm_gpu_devfreq.c
> index d32b729b4616..07f1169df89b 100644
> --- a/drivers/gpu/drm/msm/msm_gpu_devfreq.c
> +++ b/drivers/gpu/drm/msm/msm_gpu_devfreq.c
> @@ -20,6 +20,10 @@ static int msm_devfreq_target(struct device *dev, unsigned long *freq,
> struct msm_gpu *gpu = dev_to_gpu(dev);
> struct dev_pm_opp *opp;
>
> + /*
> + * Note that devfreq_recommended_opp() can modify the freq
> + * to something that actually is in the opp table:
> + */
> opp = devfreq_recommended_opp(dev, freq, flags);
>
> /*
> @@ -28,6 +32,7 @@ static int msm_devfreq_target(struct device *dev, unsigned long *freq,
> */
> if (gpu->devfreq.idle_freq) {
> gpu->devfreq.idle_freq = *freq;
> + dev_pm_opp_put(opp);
> return 0;
> }
>
>
Reviewed-by: Akhil P Oommen <akhilpo at codeaurora.org>
-Akhil
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