[PATCH] uml: request format warnings to GCC for appropriate functions

Add the format attribute to prototypes so GCC warns about improper usage.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/um/include/tt/tt.h

@@ -19,7 +19,8 @@ extern int fork_tramp(void *sig_stack);
 extern int do_proc_op(void *t, int proc_id);
 extern int tracer(int (*init_proc)(void *), void *sp);
 extern void attach_process(int pid);
-extern void tracer_panic(char *format, ...);
+extern void tracer_panic(char *format, ...)
+	__attribute__ ((format (printf, 1, 2)));
 extern void set_init_pid(int pid);
 extern int set_user_mode(void *task);
 extern void set_tracing(void *t, int tracing);

arch/um/include/user.h

@@ -6,8 +6,10 @@
 #ifndef __USER_H__
 #define __USER_H__
 
-extern void panic(const char *fmt, ...);
-extern int printk(const char *fmt, ...);
+extern void panic(const char *fmt, ...)
+	__attribute__ ((format (printf, 1, 2)));
+extern int printk(const char *fmt, ...)
+	__attribute__ ((format (printf, 1, 2)));
 extern void schedule(void);
 extern void *um_kmalloc(int size);
 extern void *um_kmalloc_atomic(int size);

arch/um/include/user_util.h

@@ -55,7 +55,8 @@ extern int get_pty(void);
 extern void *um_kmalloc(int size);
 extern int switcheroo(int fd, int prot, void *from, void *to, int size);
 extern void do_exec(int old_pid, int new_pid);
-extern void tracer_panic(char *msg, ...);
+extern void tracer_panic(char *msg, ...)
+	__attribute__ ((format (printf, 1, 2)));
 extern int detach(int pid, int sig);
 extern int attach(int pid);
 extern void kill_child_dead(int pid);