[PATCH 5.15 05/12] drm/amdkfd: fix boot failure when iommu is disabled in Picasso.

[Greg Kroah-Hartman]

From: Yifan Zhang <yifan1.zhang@xxxxxxx>

commit afd18180c07026f94a80ff024acef5f4159084a4 upstream.

When IOMMU disabled in sbios and kfd in iommuv2 path, iommuv2
init will fail. But this failure should not block amdgpu driver init.

Reported-by: youling <youling257@xxxxxxxxx>
Tested-by: youling <youling257@xxxxxxxxx>
Signed-off-by: Yifan Zhang <yifan1.zhang@xxxxxxx>
Reviewed-by: James Zhu <James.Zhu@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c |    4 ----
 drivers/gpu/drm/amd/amdkfd/kfd_device.c    |    3 +++
 2 files changed, 3 insertions(+), 4 deletions(-)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2432,10 +2432,6 @@ static int amdgpu_device_ip_init(struct
 	if (!adev->gmc.xgmi.pending_reset)
 		amdgpu_amdkfd_device_init(adev);
 
-	r = amdgpu_amdkfd_resume_iommu(adev);
-	if (r)
-		goto init_failed;
-
 	amdgpu_fru_get_product_info(adev);
 
 init_failed:
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
@@ -924,6 +924,9 @@ bool kgd2kfd_device_init(struct kfd_dev
 
 	svm_migrate_init((struct amdgpu_device *)kfd->kgd);
 
+	if(kgd2kfd_resume_iommu(kfd))
+		goto device_iommu_error;
+
 	if (kfd_resume(kfd))
 		goto kfd_resume_error;