From: Lucas Stach Date: Wed, 7 Jun 2023 13:02:20 +0000 (+0200) Subject: drm/etnaviv: avoid runtime PM usage in etnaviv_gpu_bind X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=448406eaf6c2a1f9941af1027dc610fd7461f0dc;p=linux.git drm/etnaviv: avoid runtime PM usage in etnaviv_gpu_bind Nothing in this callpath actually touches the GPU, so there is no reason to get it out of suspend state here. Only if runtime PM isn't enabled at all we must make sure to enable the clocks, so the GPU init routine can access the GPU later on. This also removes the need to guard against the state where the driver isn't fully initialized yet in the runtime PM resume handler. Signed-off-by: Lucas Stach Reviewed-by: Christian Gmeiner --- diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c index 73ce95df4cc0b..d3187ca9e1a31 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c @@ -1743,13 +1743,11 @@ static int etnaviv_gpu_bind(struct device *dev, struct device *master, if (ret) goto out_workqueue; - if (IS_ENABLED(CONFIG_PM)) - ret = pm_runtime_get_sync(gpu->dev); - else + if (!IS_ENABLED(CONFIG_PM)) { ret = etnaviv_gpu_clk_enable(gpu); - if (ret < 0) - goto out_sched; - + if (ret < 0) + goto out_sched; + } gpu->drm = drm; gpu->fence_context = dma_fence_context_alloc(1); @@ -1761,9 +1759,6 @@ static int etnaviv_gpu_bind(struct device *dev, struct device *master, priv->gpu[priv->num_gpus++] = gpu; - pm_runtime_mark_last_busy(gpu->dev); - pm_runtime_put_autosuspend(gpu->dev); - return 0; out_sched: @@ -1944,7 +1939,7 @@ static int etnaviv_gpu_rpm_resume(struct device *dev) return ret; /* Re-initialise the basic hardware state */ - if (gpu->drm && gpu->initialized) { + if (gpu->initialized) { ret = etnaviv_gpu_hw_resume(gpu); if (ret) { etnaviv_gpu_clk_disable(gpu);