drm/amdkfd: drop process ref count when xnack disable

During svm restore pages interrupt handler, kfd_process ref count was
never dropped when xnack was disabled. Therefore, the object was never
released.

Fixes: 2383f56bbe4a ("drm/amdkfd: page table restore through svm API")
Signed-off-by: Alex Sierra <alex.sierra@amd.com>
Reviewed-by: Philip Yang <philip.yang@amd.com>
Reviewed-by: Jonathan Kim <jonathan.kim@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
index 491373f..9fc8021 100644 (file)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
@@ -2484,7 +2484,8 @@ svm_range_restore_pages(struct amdgpu_device *adev, unsigned int pasid,
        }
        if (!p->xnack_enabled) {
                pr_debug("XNACK not enabled for pasid 0x%x\n", pasid);
-               return -EFAULT;
+               r = -EFAULT;
+               goto out;
        }
        svms = &p->svms;