From: Rob Herring <robh@kernel.org>
To: dri-devel@lists.freedesktop.org
Cc: Maxime Ripard <maxime.ripard@bootlin.com>,
Tomeu Vizoso <tomeu.vizoso@collabora.com>,
David Airlie <airlied@linux.ie>, Sean Paul <sean@poorly.run>,
Steven Price <steven.price@arm.com>,
Boris Brezillon <boris.brezillon@collabora.com>,
Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>,
Robin Murphy <robin.murphy@arm.com>
Subject: [PATCH v2 1/8] drm/panfrost: Fix possible suspend in panfrost_remove
Date: Thu, 22 Aug 2019 21:12:09 -0500 [thread overview]
Message-ID: <20190823021216.5862-2-robh@kernel.org> (raw)
In-Reply-To: <20190823021216.5862-1-robh@kernel.org>
Calls to panfrost_device_fini() access the h/w, but we already done a
pm_runtime_put_sync_autosuspend() beforehand. This only works if the
autosuspend delay is long enough. A 0ms delay will hang the system when
removing the device. Fix this by moving the pm_runtime_put_sync_suspend()
after the panfrost_device_fini() call.
Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: Steven Price <steven.price@arm.com>
Cc: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Rob Herring <robh@kernel.org>
---
v2: new patch
drivers/gpu/drm/panfrost/panfrost_drv.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c b/drivers/gpu/drm/panfrost/panfrost_drv.c
index 44a558c6e17e..d74442d71048 100644
--- a/drivers/gpu/drm/panfrost/panfrost_drv.c
+++ b/drivers/gpu/drm/panfrost/panfrost_drv.c
@@ -570,11 +570,13 @@ static int panfrost_remove(struct platform_device *pdev)
drm_dev_unregister(ddev);
panfrost_gem_shrinker_cleanup(ddev);
+
pm_runtime_get_sync(pfdev->dev);
- pm_runtime_put_sync_autosuspend(pfdev->dev);
- pm_runtime_disable(pfdev->dev);
panfrost_devfreq_fini(pfdev);
panfrost_device_fini(pfdev);
+ pm_runtime_put_sync_suspend(pfdev->dev);
+ pm_runtime_disable(pfdev->dev);
+
drm_dev_put(ddev);
return 0;
}
--
2.20.1
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next prev parent reply other threads:[~2019-08-23 2:12 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-23 2:12 (unknown) Rob Herring
2019-08-23 2:12 ` Rob Herring [this message]
2019-08-23 14:50 ` [PATCH v2 1/8] drm/panfrost: Fix possible suspend in panfrost_remove Steven Price
2019-08-23 2:12 ` [PATCH v2 2/8] drm/panfrost: Rework runtime PM initialization Rob Herring
2019-08-23 10:54 ` Robin Murphy
2019-08-23 12:16 ` Rob Herring
2019-08-23 2:12 ` [PATCH v2 3/8] drm/panfrost: Hold runtime PM reference until jobs complete Rob Herring
2019-08-23 14:50 ` Steven Price
2019-08-23 15:13 ` Rob Herring
2019-08-23 2:12 ` [PATCH v2 4/8] drm/shmem: Do dma_unmap_sg before purging pages Rob Herring
2019-08-23 2:12 ` [PATCH v2 5/8] drm/shmem: Use mutex_trylock in drm_gem_shmem_purge Rob Herring
2019-08-23 14:53 ` Steven Price
2019-08-23 2:12 ` [PATCH v2 6/8] drm/panfrost: Use mutex_trylock in panfrost_gem_purge Rob Herring
2019-08-23 14:55 ` Steven Price
2019-08-23 2:12 ` [PATCH v2 7/8] drm/panfrost: Rework page table flushing and runtime PM interaction Rob Herring
2019-08-23 11:11 ` Robin Murphy
2019-08-23 15:05 ` Steven Price
2019-08-23 15:44 ` Robin Murphy
2019-08-23 15:57 ` Rob Herring
2019-08-23 16:16 ` Robin Murphy
2019-08-23 16:45 ` Rob Herring
2019-08-23 15:09 ` Steven Price
2019-08-23 15:49 ` Rob Herring
2019-08-23 2:12 ` [PATCH v2 8/8] drm/panfrost: Remove unnecessary flushing from tlb_inv_context Rob Herring
2019-08-23 12:56 ` Robin Murphy
2019-08-23 13:18 ` Rob Herring
2019-08-23 14:05 ` Robin Murphy
2019-08-23 14:26 ` Rob Herring
2019-08-23 14:56 ` Robin Murphy
2019-08-23 15:12 ` Steven Price
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