1 files changed, 3 insertions, 1 deletions

diff --git a/arch/arm/kernel/head-common.S b/arch/arm/kernel/head-common.S
index 93ad576b2d74..885a7214418d 100644
--- a/arch/arm/kernel/head-common.S
+++ b/arch/arm/kernel/head-common.S
@@ -13,6 +13,7 @@
 
 #define ATAG_CORE 0x54410001
 #define ATAG_CORE_SIZE ((2*4 + 3*4) >> 2)
+#define ATAG_CORE_SIZE_EMPTY ((2*4) >> 2)
 
         .align  2
         .type   __switch_data, %object
@@ -251,7 +252,8 @@ __vet_atags:
         bne     1f
 
         ldr     r5, [r2, #0]                    @ is first tag ATAG_CORE?
-        subs    r5, r5, #ATAG_CORE_SIZE
+        cmp     r5, #ATAG_CORE_SIZE
+        cmpne   r5, #ATAG_CORE_SIZE_EMPTY
         bne     1f
         ldr     r5, [r2, #4]
         ldr     r6, =ATAG_CORE