amdgpu_driver_load_kms() calls pm_runtime_put_autosuspend() if amdgpu_device_is_px(dev), but amdgpu_driver_unload_kms() calls pm_runtime_get_sync() unconditionally. We therefore leak a runtime pm ref whenever amdgpu is unloaded on a non-PX machine or if runpm=0. The GPU will subsequently never runtime suspend after loading amdgpu again.
Fix by taking the runtime pm ref under the same condition that it was released on driver load.
Fixes: d38ceaf99ed0 ("drm/amdgpu: add core driver (v4)") Signed-off-by: Lukas Wunner lukas@wunner.de --- drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c index 40a2370..9b1f979 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c @@ -60,7 +60,9 @@ int amdgpu_driver_unload_kms(struct drm_device *dev) if (adev->rmmio == NULL) goto done_free;
- pm_runtime_get_sync(dev->dev); + if (amdgpu_device_is_px(dev)) { + pm_runtime_get_sync(dev->dev); + }
amdgpu_amdkfd_device_fini(adev);