diff options
Diffstat (limited to 'arch/x86/mm/ioremap.c')
| -rw-r--r-- | arch/x86/mm/ioremap.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c index e5608d380176..3d0a589d92c4 100644 --- a/arch/x86/mm/ioremap.c +++ b/arch/x86/mm/ioremap.c @@ -149,9 +149,11 @@ static void __iomem *__ioremap(resource_size_t phys_addr, unsigned long size, for (pfn = phys_addr >> PAGE_SHIFT; (pfn << PAGE_SHIFT) < last_addr; pfn++) { - if (page_is_ram(pfn) && pfn_valid(pfn) && - !PageReserved(pfn_to_page(pfn))) + int is_ram = page_is_ram(pfn); + + if (is_ram && pfn_valid(pfn) && !PageReserved(pfn_to_page(pfn))) return NULL; + WARN_ON_ONCE(is_ram); } switch (mode) { |