| Message ID | ccd4f7208acbd7761364418fc34f7849acbb4597.1465392124.git.lukas@wunner.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c index 0db692e..38a28d1 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c @@ -62,6 +62,7 @@ int amdgpu_driver_unload_kms(struct drm_device *dev) if (amdgpu_device_is_px(dev)) { pm_runtime_get_sync(dev->dev); + pm_runtime_forbid(dev->dev); } amdgpu_amdkfd_device_fini(adev);
The PCI core calls pm_runtime_forbid() on device probe in pci_pm_init(), making this the default state when amdgpu is loaded. amdgpu_driver_load_kms() therefore calls pm_runtime_allow(), but there's no pm_runtime_forbid() in amdgpu_driver_unload_kms() to balance it. Add it so that we leave the device in the same state that we found it. This isn't a bug, it's just good housekeeping. When amdgpu is first loaded with runpm=1, then unloaded and loaded again with runpm=0, pm_runtime_forbid() will be called from amdgpu_pmops_runtime_idle() or amdgpu_pmops_runtime_suspend(), so the behaviour is correct. If there ever is a third party driver for AMD cards, this commit avoids that it has to clean up behind amdgpu. Cc: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Lukas Wunner <lukas@wunner.de> --- drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 1 + 1 file changed, 1 insertion(+)