diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_svm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c index 31e500859a..9248525124 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c @@ -1658,7 +1658,7 @@ static int svm_range_validate_and_map(struct mm_struct *mm, start = map_start << PAGE_SHIFT; end = (map_last + 1) << PAGE_SHIFT; for (addr = start; !r && addr < end; ) { - struct hmm_range *hmm_range; + struct hmm_range *hmm_range = NULL; unsigned long map_start_vma; unsigned long map_last_vma; struct vm_area_struct *vma; @@ -1696,7 +1696,12 @@ static int svm_range_validate_and_map(struct mm_struct *mm, } svm_range_lock(prange); - if (!r && amdgpu_hmm_range_get_pages_done(hmm_range)) { + + /* Free backing memory of hmm_range if it was initialized + * Overrride return value to TRY AGAIN only if prior returns + * were successful + */ + if (hmm_range && amdgpu_hmm_range_get_pages_done(hmm_range) && !r) { pr_debug("hmm update the range, need validate again\n"); r = -EAGAIN; } |