[PATCH v4 01/31] accel: ethosu: Suspend after initialization

["Rob Herring (Arm)" <robh@kernel.org>]

The initial runtime-PM reference is held only while initializing the
NPU. Release it synchronously from ethosu_init() after the final
hardware access, before registering the DRM device.

This keeps the runtime-PM setup and initial reference handling together
and leaves the autosuspend configuration in place for subsequent jobs.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
---
v2:
 - new patch
---
 drivers/accel/ethosu/ethosu_drv.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/accel/ethosu/ethosu_drv.c b/drivers/accel/ethosu/ethosu_drv.c
index 4a24bbd2bb61..38af57807cee 100644
--- a/drivers/accel/ethosu/ethosu_drv.c
+++ b/drivers/accel/ethosu/ethosu_drv.c
@@ -338,6 +338,8 @@ static int ethosu_init(struct ethosu_device *ethosudev)
 		 ethosudev->npu_info.sram_size / 1024,
 		 ethosudev->npu_info.pmu_counters);
 
+	pm_runtime_put_sync_suspend(ethosudev->base.dev);
+
 	return 0;
 }
 
@@ -376,10 +378,6 @@ static int ethosu_probe(struct platform_device *pdev)
 		return ret;
 
 	ret = drm_dev_register(&ethosudev->base, 0);
-	if (ret)
-		pm_runtime_dont_use_autosuspend(ethosudev->base.dev);
-
-	pm_runtime_put_autosuspend(ethosudev->base.dev);
 	return ret;
 }
 

-- 
2.53.0