X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=arch%2Farm64%2Finclude%2Fasm%2Fcompat.h;h=618b450e5a1d5e009f30784b11e66a3fbc6468c5;hb=e91d1694d362f065c51eb07b46b19e8b33c92777;hp=37e610dc084ed76b532f0647f07d6c2085b69798;hpb=0ced14fbda44bf9c4977f1b01ae1077b944b94ab;p=firefly-linux-kernel-4.4.55.git

diff --git a/arch/arm64/include/asm/compat.h b/arch/arm64/include/asm/compat.h
index 37e610dc084e..618b450e5a1d 100644
--- a/arch/arm64/include/asm/compat.h
+++ b/arch/arm64/include/asm/compat.h
@@ -23,6 +23,7 @@
  */
 #include <linux/types.h>
 #include <linux/sched.h>
+#include <linux/ptrace.h>
 
 #define COMPAT_USER_HZ		100
 #define COMPAT_UTS_MACHINE	"armv8l\0\0"
@@ -209,10 +210,11 @@ static inline compat_uptr_t ptr_to_compat(void __user *uptr)
 	return (u32)(unsigned long)uptr;
 }
 
+#define compat_user_stack_pointer() (current_pt_regs()->compat_sp)
+
 static inline void __user *arch_compat_alloc_user_space(long len)
 {
-	struct pt_regs *regs = task_pt_regs(current);
-	return (void __user *)regs->compat_sp - len;
+	return (void __user *)compat_user_stack_pointer() - len;
 }
 
 struct compat_ipc64_perm {