[PATCH v2 1/8] drm/panfrost: Fix possible suspend in panfrost_remove

[Rob Herring]

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 at collabora.com>
Cc: Steven Price <steven.price at arm.com>
Cc: Alyssa Rosenzweig <alyssa.rosenzweig at collabora.com>
Cc: David Airlie <airlied at linux.ie>
Cc: Daniel Vetter <daniel at ffwll.ch>
Signed-off-by: Rob Herring <robh at 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