-#ifdef CONFIG_MEMORY_HOTPLUG
-/*
- * Finds the lowest memory reosurce exists within [res->start.res->end)
- * the caller must specify res->start, res->end, res->flags.
- * If found, returns 0, res is overwritten, if not found, returns -1.
- */
-int find_next_system_ram(struct resource *res)
-{
- resource_size_t start, end;
- struct resource *p;
-
- BUG_ON(!res);
-
- start = res->start;
- end = res->end;
- BUG_ON(start >= end);
-
- read_lock(&resource_lock);
- for (p = iomem_resource.child; p ; p = p->sibling) {
- /* system ram is just marked as IORESOURCE_MEM */
- if (p->flags != res->flags)
- continue;
- if (p->start > end) {
- p = NULL;
- break;
- }
- if ((p->end >= start) && (p->start < end))
- break;
- }
- read_unlock(&resource_lock);
- if (!p)
- return -1;
- /* copy data */
- if (res->start < p->start)
- res->start = p->start;
- if (res->end > p->end)
- res->end = p->end;
- return 0;
-}
-#endif
-