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-rw-r--r--arch/x86/mm/ioremap.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index e4c43ec71b29..ae71e11eb3e5 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -220,6 +220,12 @@ static void __iomem *__ioremap_caller(resource_size_t phys_addr,
return (__force void __iomem *)phys_to_virt(phys_addr);
/*
+ * Check if the request spans more than any BAR in the iomem resource
+ * tree.
+ */
+ WARN_ON(iomem_map_sanity_check(phys_addr, size));
+
+ /*
* Don't allow anybody to remap normal RAM that we're using..
*/
for (pfn = phys_addr >> PAGE_SHIFT;
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