[PATCH] hrtimers: fix timer_create(2) && SIGEV_NONE

From: george anzinger <george@mvista.com>

- Fix the sig_notify filtering code for the timer_create system call to
  properly check for the signal number being small enought, but only if
  SIG_NONE is not specified.

- Eliminate useless test of sig_notify.

kernel/posix-timers.c

@@ -357,13 +357,10 @@ static inline struct task_struct * good_sigevent(sigevent_t * event)
 			rtn->tgid != current->tgid))
 		return NULL;
 
-	if ((event->sigev_notify & SIGEV_SIGNAL & MIPS_SIGEV) &&
+	if ((event->sigev_notify & ~SIGEV_NONE & MIPS_SIGEV) &&
 			((unsigned) (event->sigev_signo > SIGRTMAX)))
 		return NULL;
 
-	if (event->sigev_notify & ~(SIGEV_SIGNAL | SIGEV_THREAD_ID))
-		return NULL;
-
 	return rtn;
 }