diff options
| -rw-r--r-- | arch/arm/mm/ioremap.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c index 28c8b950ef04..03f11935ed08 100644 --- a/arch/arm/mm/ioremap.c +++ b/arch/arm/mm/ioremap.c @@ -268,6 +268,12 @@ void __iomem * __arm_ioremap_pfn_caller(unsigned long pfn, if (pfn >= 0x100000 && (__pfn_to_phys(pfn) & ~SUPERSECTION_MASK)) return NULL; + /* + * Don't allow RAM to be mapped - this causes problems with ARMv6+ + */ + if (WARN_ON(pfn_valid(pfn))) + return NULL; + type = get_mem_type(mtype); if (!type) return NULL; |