diff options
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/drm_mm.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_mm.c b/drivers/gpu/drm/drm_mm.c index 3f56d4b0cdae..11d44a1e0ab3 100644 --- a/drivers/gpu/drm/drm_mm.c +++ b/drivers/gpu/drm/drm_mm.c @@ -250,6 +250,9 @@ int drm_mm_reserve_node(struct drm_mm *mm, struct drm_mm_node *node) struct drm_mm_node *hole; u64 hole_start, hole_end; + if (WARN_ON(node->size == 0)) + return -EINVAL; + end = node->start + node->size; /* Find the relevant hole to add our node to */ @@ -317,6 +320,9 @@ int drm_mm_insert_node_generic(struct drm_mm *mm, struct drm_mm_node *node, { struct drm_mm_node *hole_node; + if (WARN_ON(size == 0)) + return -EINVAL; + hole_node = drm_mm_search_free_generic(mm, size, alignment, color, sflags); if (!hole_node) @@ -419,6 +425,9 @@ int drm_mm_insert_node_in_range_generic(struct drm_mm *mm, struct drm_mm_node *n { struct drm_mm_node *hole_node; + if (WARN_ON(size == 0)) + return -EINVAL; + hole_node = drm_mm_search_free_in_range_generic(mm, size, alignment, color, start, end, sflags); |