x86: pass argument to putuser_64 functions in ax register.

This is consistent with i386 usage.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2 files changed, 5 insertions, 5 deletions

diff --git a/arch/x86/lib/putuser_64.S b/arch/x86/lib/putuser_64.S
index 07028851064c..ce5fcd5d8c16 100644
--- a/arch/x86/lib/putuser_64.S
+++ b/arch/x86/lib/putuser_64.S
@@ -37,7 +37,7 @@ ENTRY(__put_user_1)
         GET_THREAD_INFO(%rbx)
         cmpq TI_addr_limit(%rbx),%rcx
         jae bad_put_user
-1:      movb %dl,(%rcx)
+1:      movb %al,(%rcx)
         xorl %eax,%eax
         ret
         CFI_ENDPROC
@@ -51,7 +51,7 @@ ENTRY(__put_user_2)
         cmpq TI_addr_limit(%rbx),%rcx
         jae 20f
         decq %rcx
-2:      movw %dx,(%rcx)
+2:      movw %ax,(%rcx)
         xorl %eax,%eax
         ret
 20:     decq %rcx
@@ -67,7 +67,7 @@ ENTRY(__put_user_4)
         cmpq TI_addr_limit(%rbx),%rcx
         jae 30f
         subq $3,%rcx
-3:      movl %edx,(%rcx)
+3:      movl %eax,(%rcx)
         xorl %eax,%eax
         ret
 30:     subq $3,%rcx
@@ -83,7 +83,7 @@ ENTRY(__put_user_8)
         cmpq TI_addr_limit(%rbx),%rcx
         jae 40f
         subq $7,%rcx
-4:      movq %rdx,(%rcx)
+4:      movq %rax,(%rcx)
         xorl %eax,%eax
         ret
 40:     subq $7,%rcx
diff --git a/include/asm-x86/uaccess_64.h b/include/asm-x86/uaccess_64.h
index 21fda9ebee13..f822a36cc1c0 100644
--- a/include/asm-x86/uaccess_64.h
+++ b/include/asm-x86/uaccess_64.h
@@ -130,7 +130,7 @@ extern void __put_user_bad(void);
 #define __put_user_x(size, ret, x, ptr)                                 \
         asm volatile("call __put_user_" #size                           \
                      :"=a" (ret)                                        \
-                     :"c" (ptr),"d" (x)                                 \
+                     :"c" (ptr),"a" (x)                                 \
                      :"ebx")
 
 #define put_user(x, ptr)                                                \