diff options
Diffstat (limited to 'arch/arm/mm/ioremap.c')
| -rw-r--r-- | arch/arm/mm/ioremap.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c index d42b93316183..841b66515b37 100644 --- a/arch/arm/mm/ioremap.c +++ b/arch/arm/mm/ioremap.c @@ -27,6 +27,7 @@ #include <linux/vmalloc.h> #include <linux/io.h> #include <linux/sizes.h> +#include <linux/memblock.h> #include <asm/cp15.h> #include <asm/cputype.h> @@ -301,7 +302,8 @@ static void __iomem * __arm_ioremap_pfn_caller(unsigned long pfn, * Don't allow RAM to be mapped with mismatched attributes - this * causes problems with ARMv6+ */ - if (WARN_ON(pfn_valid(pfn) && mtype != MT_MEMORY_RW)) + if (WARN_ON(memblock_is_map_memory(PFN_PHYS(pfn)) && + mtype != MT_MEMORY_RW)) return NULL; area = get_vm_area_caller(size, VM_IOREMAP, caller); @@ -498,3 +500,11 @@ void __init early_ioremap_init(void) { early_ioremap_setup(); } + +bool arch_memremap_can_ram_remap(resource_size_t offset, size_t size, + unsigned long flags) +{ + unsigned long pfn = PHYS_PFN(offset); + + return memblock_is_map_memory(pfn); +} |