[PATCH v3 01/22] accel: ethosu: Suspend after initialization

[Rob Herring (Arm)]

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) <r...@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 8108622de258..df76253d01a6 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