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.viz...@collabora.com>
Cc: Steven Price <steven.pr...@arm.com>
Cc: Alyssa Rosenzweig <alyssa.rosenzw...@collabora.com>
Cc: David Airlie <airl...@linux.ie>
Cc: Daniel Vetter <dan...@ffwll.ch>
Signed-off-by: Rob Herring <r...@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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