Correct prototypes for sys_wait4 and sys_waitpid.

include/linux/syscalls.h

@@ -160,11 +160,11 @@ asmlinkage long sys_kexec_load(void *entry, unsigned long nr_segments,
 
 asmlinkage long sys_exit(int error_code);
 asmlinkage void sys_exit_group(int error_code);
-asmlinkage long sys_wait4(pid_t pid, unsigned int __user *stat_addr,
+asmlinkage long sys_wait4(pid_t pid, int __user *stat_addr,
 				int options, struct rusage __user *ru);
 asmlinkage long sys_waitid(int which, pid_t pid,
 			   	struct siginfo __user *infop, int options);
-asmlinkage long sys_waitpid(pid_t pid, unsigned int __user *stat_addr, int options);
+asmlinkage long sys_waitpid(pid_t pid, int __user *stat_addr, int options);
 asmlinkage long sys_set_tid_address(int __user *tidptr);
 asmlinkage long sys_futex(u32 __user *uaddr, int op, int val,
 			struct timespec __user *utime, u32 __user *uaddr2,

kernel/exit.c

@@ -1401,7 +1401,7 @@ asmlinkage long sys_waitid(int which, pid_t pid,
 	return do_wait(pid, options, infop, NULL, ru);
 }
 
-asmlinkage long sys_wait4(pid_t pid, unsigned int __user *stat_addr,
+asmlinkage long sys_wait4(pid_t pid, int __user *stat_addr,
 			  int options, struct rusage __user *ru)
 {
 	if (options & ~(WNOHANG|WUNTRACED|__WNOTHREAD|__WCLONE|__WALL))
@@ -1415,7 +1415,7 @@ asmlinkage long sys_wait4(pid_t pid, unsigned int __user *stat_addr,
  * sys_waitpid() remains for compatibility. waitpid() should be
  * implemented by calling sys_wait4() from libc.a.
  */
-asmlinkage long sys_waitpid(pid_t pid, unsigned __user *stat_addr, int options)
+asmlinkage long sys_waitpid(pid_t pid, int __user *stat_addr, int options)
 {
 	return sys_wait4(pid, stat_addr, options, NULL);
 }