ih1 is not initialized for APUs. Don't drain it or NULL pointer
error will be triggered.
Fixes: 490fc21fe97c (drm/amdkfd: Change kfd/svm page fault drain handling)
Signed-off-by: Yifan Zhang <yifan1.zhang@xxxxxxx>
---
drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
index b44dec90969f..512cbf9403a3 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
@@ -2458,11 +2458,13 @@ svm_range_unmap_from_cpu(struct mm_struct *mm, struct svm_range *prange,
adev = pdd->dev->adev;
/* Check and drain ih1 ring if cam not available */
- ih = &adev->irq.ih1;
- checkpoint_wptr = amdgpu_ih_get_wptr(adev, ih);
- if (ih->rptr != checkpoint_wptr) {
- svms->checkpoint_ts[i] = amdgpu_ih_decode_iv_ts(adev, ih, checkpoint_wptr, -1);
- continue;
+ if (adev->irq.ih1.ring_size) {
+ ih = &adev->irq.ih1;
+ checkpoint_wptr = amdgpu_ih_get_wptr(adev, ih);
+ if (ih->rptr != checkpoint_wptr) {
+ svms->checkpoint_ts[i] = amdgpu_ih_decode_iv_ts(adev, ih, checkpoint_wptr, -1);
+ continue;
+ }
}
/* check if dev->irq.ih_soft is not empty */
--
2.37.3
