x86: uaccess: fix compilation error on CONFIG_M386

In case of !CONFIG_X86_WP_WORKS_OK, __put_user_size_ex() is not defined.
Add macros for !CONFIG_X86_WP_WORKS_OK case.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 20 insertions, 2 deletions

diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h
index 0ec6de4bcb0b..b9a24155f7af 100644
--- a/arch/x86/include/asm/uaccess.h
+++ b/arch/x86/include/asm/uaccess.h
@@ -525,8 +525,6 @@ struct __large_struct { unsigned long buf[100]; };
  */
 #define get_user_try            uaccess_try
 #define get_user_catch(err)     uaccess_catch(err)
-#define put_user_try            uaccess_try
-#define put_user_catch(err)     uaccess_catch(err)
 
 #define get_user_ex(x, ptr)     do {                                    \
         unsigned long __gue_val;                                        \
@@ -534,9 +532,29 @@ struct __large_struct { unsigned long buf[100]; };
         (x) = (__force __typeof__(*(ptr)))__gue_val;                    \
 } while (0)
 
+#ifdef CONFIG_X86_WP_WORKS_OK
+
+#define put_user_try            uaccess_try
+#define put_user_catch(err)     uaccess_catch(err)
+
 #define put_user_ex(x, ptr)                                             \
         __put_user_size_ex((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr)))
 
+#else /* !CONFIG_X86_WP_WORKS_OK */
+
+#define put_user_try            do {            \
+        int __uaccess_err = 0;
+
+#define put_user_catch(err)                     \
+        (err) |= __uaccess_err;                 \
+} while (0)
+
+#define put_user_ex(x, ptr)     do {            \
+        __uaccess_err |= __put_user(x, ptr);    \
+} while (0)
+
+#endif /* CONFIG_X86_WP_WORKS_OK */
+
 /*
  * movsl can be slow when source and dest are not both 8-byte aligned
  */