[PATCH 2/2] drm/gpuvm: Fix comment to reflect remap operation operand status

["Adrián Larumbe" <adrian.larumbe@collabora.com>]

When a new mapping intersects with an existing GPU VA, but either
end lies before or beyond the existing VA's edges, then the prev
and next mapping operations part of a remap will reflect this
condition by being set to NULL.

Signed-off-by: Adrián Larumbe <adrian.larumbe@collabora.com>
---
 include/drm/drm_gpuvm.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/drm/drm_gpuvm.h b/include/drm/drm_gpuvm.h
index 625958fce7fd..4836ef9cc25f 100644
--- a/include/drm/drm_gpuvm.h
+++ b/include/drm/drm_gpuvm.h
@@ -929,6 +929,8 @@ struct drm_gpuva_op_unmap {
  * If either a new mapping's start address is aligned with the start address
  * of the old mapping or the new mapping's end address is aligned with the
  * end address of the old mapping, either @prev or @next is NULL.
+ * This will also be the case when the requested mapping begins before the
+ * old mapping's start address or stretches beyond its end address.
  *
  * Note, the reason for a dedicated remap operation, rather than arbitrary
  * unmap and map operations, is to give drivers the chance of extracting driver
-- 
2.53.0