From: Alex Deucher alexander.deucher@amd.com
[ Upstream commit 1c1ada37af6ee6fb9cfc8da6a56cc83208cd8d6f ]
The call to pm_runtime_get_sync increments the counter even in case of failure, leading to incorrect ref count. In case of failure, decrement the ref count before returning.
Reviewed-by: Rajneesh Bhardwaj rajneesh.bhardwaj@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/amd/amdkfd/kfd_process.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c b/drivers/gpu/drm/amd/amdkfd/kfd_process.c index d8c74aa4e5650..281bd84b0ff44 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c @@ -959,8 +959,10 @@ struct kfd_process_device *kfd_bind_process_to_device(struct kfd_dev *dev, */ if (!pdd->runtime_inuse) { err = pm_runtime_get_sync(dev->ddev->dev); - if (err < 0) + if (err < 0) { + pm_runtime_put_autosuspend(dev->ddev->dev); return ERR_PTR(err); + } }
err = kfd_iommu_bind_process_to_device(pdd);