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>

2 files changed, 1 insertions, 10 deletions

diff --git a/arch/arm/include/asm/memblock.h b/arch/arm/include/asm/memblock.h
index fdbc43b2e6c0..b8da2e415e4e 100644
--- a/arch/arm/include/asm/memblock.h
+++ b/arch/arm/include/asm/memblock.h
@@ -1,13 +1,6 @@
 #ifndef _ASM_ARM_MEMBLOCK_H
 #define _ASM_ARM_MEMBLOCK_H
 
-#ifdef CONFIG_MMU
-extern phys_addr_t lowmem_end_addr;
-#define MEMBLOCK_REAL_LIMIT     lowmem_end_addr
-#else
-#define MEMBLOCK_REAL_LIMIT     0
-#endif
-
 struct meminfo;
 struct machine_desc;
 
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index d184d25e9a5f..8e21b4e721e4 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];