ARM: fix memblock breakage

Will says:
| Commit e63075a3 removed the explicit MEMBLOCK_REAL_LIMIT #define
| and introduced the requirement that arch code calls
| memblock_set_current_limit to ensure that the __va macro can
| be used on physical addresses returned from memblock_alloc.

Unfortunately, ARM was missed out of this change.  Fix this.

Reported-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 1 insertions, 3 deletions

diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index d184d25e9a5..8e21b4e721e 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -745,13 +745,11 @@ static int __init early_vmalloc(char *arg)
 }
 early_param("vmalloc", early_vmalloc);
 
-phys_addr_t lowmem_end_addr;
-
 static void __init sanity_check_meminfo(void)
 {
 	int i, j, highmem = 0;
 
-	lowmem_end_addr = __pa(vmalloc_min - 1) + 1;
+	memblock_set_current_limit(__pa(vmalloc_min - 1) + 1);
 
 	for (i = 0, j = 0; i < meminfo.nr_banks; i++) {
 		struct membank *bank = &meminfo.bank[j];