posix-timers: Convert clock_getres() to clockid_to_kclock()

Use the new kclock decoding. Fixup the fallout in mmtimer.c

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: John Stultz <johnstul@us.ibm.com>
Tested-by: Richard Cochran <richard.cochran@omicron.at>
LKML-Reference: <20110201134418.709802797@linutronix.de>

1 files changed, 4 insertions, 13 deletions

diff --git a/kernel/posix-timers.c b/kernel/posix-timers.c
index 7f66143d1ce5..748497fffd0f 100644
--- a/kernel/posix-timers.c
+++ b/kernel/posix-timers.c
@@ -182,14 +182,6 @@ static inline void unlock_timer(struct k_itimer *timr, unsigned long flags)
  * the function pointer CALL in struct k_clock.
  */
 
-static inline int common_clock_getres(const clockid_t which_clock,
-                                      struct timespec *tp)
-{
-        tp->tv_sec = 0;
-        tp->tv_nsec = posix_clocks[which_clock].res;
-        return 0;
-}
-
 static int common_timer_create(struct k_itimer *new_timer)
 {
         hrtimer_init(&new_timer->it.real.timer, new_timer->it_clock, 0);
@@ -984,18 +976,17 @@ SYSCALL_DEFINE2(clock_gettime, const clockid_t, which_clock,
 SYSCALL_DEFINE2(clock_getres, const clockid_t, which_clock,
                 struct timespec __user *, tp)
 {
+        struct k_clock *kc = clockid_to_kclock(which_clock);
         struct timespec rtn_tp;
         int error;
 
-        if (invalid_clockid(which_clock))
+        if (!kc)
                 return -EINVAL;
 
-        error = CLOCK_DISPATCH(which_clock, clock_getres,
-                               (which_clock, &rtn_tp));
+        error = kc->clock_getres(which_clock, &rtn_tp);
 
-        if (!error && tp && copy_to_user(tp, &rtn_tp, sizeof (rtn_tp))) {
+        if (!error && tp && copy_to_user(tp, &rtn_tp, sizeof (rtn_tp)))
                 error = -EFAULT;
-        }
 
         return error;
 }