1 files changed, 5 insertions, 6 deletions

diff --git a/kernel/resource.c b/kernel/resource.c
index 92190f62ebc5..8c15f846e8ef 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -520,21 +520,20 @@ EXPORT_SYMBOL_GPL(page_is_ram);
 int region_intersects(resource_size_t start, size_t size, unsigned long flags,
                       unsigned long desc)
 {
-        resource_size_t end = start + size - 1;
+        struct resource res;
         int type = 0; int other = 0;
         struct resource *p;
 
+        res.start = start;
+        res.end = start + size - 1;
+
         read_lock(&resource_lock);
         for (p = iomem_resource.child; p ; p = p->sibling) {
                 bool is_type = (((p->flags & flags) == flags) &&
                                 ((desc == IORES_DESC_NONE) ||
                                  (desc == p->desc)));
 
-                if (start >= p->start && start <= p->end)
-                        is_type ? type++ : other++;
-                if (end >= p->start && end <= p->end)
-                        is_type ? type++ : other++;
-                if (p->start >= start && p->end <= end)
+                if (resource_overlaps(p, &res))
                         is_type ? type++ : other++;
         }
         read_unlock(&resource_lock);