[PATCH] x86-64: use BUILD_BUG_ON in FPU code

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>

1 files changed, 2 insertions, 5 deletions

diff --git a/arch/x86_64/kernel/i387.c b/arch/x86_64/kernel/i387.c
index 3aa1e9bb781d..1d58c13bc6bc 100644
--- a/arch/x86_64/kernel/i387.c
+++ b/arch/x86_64/kernel/i387.c
@@ -82,11 +82,8 @@ int save_i387(struct _fpstate __user *buf)
         struct task_struct *tsk = current;
         int err = 0;
 
-        { 
-                extern void bad_user_i387_struct(void); 
-                if (sizeof(struct user_i387_struct) != sizeof(tsk->thread.i387.fxsave))
-                        bad_user_i387_struct();
-        } 
+        BUILD_BUG_ON(sizeof(struct user_i387_struct) !=
+                        sizeof(tsk->thread.i387.fxsave));
 
         if ((unsigned long)buf % 16) 
                 printk("save_i387: bad fpstate %p\n",buf);