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Date: Mon, 27 Jun 2022 13:20:19 +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>, Akhil P Oommen <quic_akhilpo@...cinc.com>, Douglas Anderson <dianders@...omium.org>, Sasha Levin <sashal@...nel.org> Subject: [PATCH 5.18 046/181] drm/msm: Switch ordering of runpm put vs devfreq_idle From: Rob Clark <robdclark@...omium.org> [ Upstream commit 49e477610087a02c3604061b8f3ee3a25a493987 ] In msm_devfreq_suspend() we cancel idle_work synchronously so that it doesn't run after we power of the hw or in the resume path. But this means that we want to ensure that idle_work is not scheduled *after* we no longer hold a runpm ref. So switch the ordering of pm_runtime_put() vs msm_devfreq_idle(). v2. Only move the runpm _put_autosuspend, and not the _mark_last_busy() Fixes: 9bc95570175a ("drm/msm: Devfreq tuning") Signed-off-by: Rob Clark <robdclark@...omium.org> Link: https://lore.kernel.org/r/20210927152928.831245-1-robdclark@gmail.com Reviewed-by: Akhil P Oommen <quic_akhilpo@...cinc.com> Reviewed-by: Douglas Anderson <dianders@...omium.org> Link: https://lore.kernel.org/r/20220608161334.2140611-1-robdclark@gmail.com Signed-off-by: Rob Clark <robdclark@...omium.org> Signed-off-by: Sasha Levin <sashal@...nel.org> --- drivers/gpu/drm/msm/msm_gpu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c index 58eb3e1662cb..7d27d7cee688 100644 --- a/drivers/gpu/drm/msm/msm_gpu.c +++ b/drivers/gpu/drm/msm/msm_gpu.c @@ -664,7 +664,6 @@ static void retire_submit(struct msm_gpu *gpu, struct msm_ringbuffer *ring, msm_submit_retire(submit); pm_runtime_mark_last_busy(&gpu->pdev->dev); - pm_runtime_put_autosuspend(&gpu->pdev->dev); spin_lock_irqsave(&ring->submit_lock, flags); list_del(&submit->node); @@ -678,6 +677,8 @@ static void retire_submit(struct msm_gpu *gpu, struct msm_ringbuffer *ring, msm_devfreq_idle(gpu); mutex_unlock(&gpu->active_lock); + pm_runtime_put_autosuspend(&gpu->pdev->dev); + msm_gem_submit_put(submit); } -- 2.35.1
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