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Diffstat (limited to 'arch/x86/mm/ioremap.c')
| -rw-r--r-- | arch/x86/mm/ioremap.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c index f4c95aec5ac..882328efc3d 100644 --- a/arch/x86/mm/ioremap.c +++ b/arch/x86/mm/ioremap.c @@ -134,6 +134,8 @@ static void __iomem *__ioremap(unsigned long phys_addr, unsigned long size, return NULL; } + WARN_ON_ONCE(page_is_ram(pfn)); + switch (mode) { case IOR_MODE_UNCACHED: default: |