[patch 07/28] posix-timers: Convert clock_nanosleep_restart toclockid_to_kclock()

[Thomas Gleixner]

Use the new kclock decoding function in clock_nanosleep_restart. No
need to check kclock here as the restart block always contains a valid
clockid. If not, we are in serious trouble anyway.

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: John Stultz <john.stultz@xxxxxxxxxx>
Cc: Richard Cochran <richard.cochran@xxxxxxxxxx>
---
 kernel/posix-timers.c |   17 +++++------------
 1 file changed, 5 insertions(+), 12 deletions(-)

Index: linux-2.6-tip/kernel/posix-timers.c
===================================================================
--- linux-2.6-tip.orig/kernel/posix-timers.c
+++ linux-2.6-tip/kernel/posix-timers.c
@@ -277,12 +277,14 @@ static __init int init_posix_timers(void
 	struct k_clock clock_realtime = {
 		.clock_getres	= hrtimer_get_res,
 		.nsleep		= common_nsleep,
+		.nsleep_restart	= hrtimer_nanosleep_restart,
 	};
 	struct k_clock clock_monotonic = {
 		.clock_getres	= hrtimer_get_res,
 		.clock_get	= posix_ktime_get_ts,
 		.clock_set	= do_posix_clock_nosettime,
 		.nsleep		= common_nsleep,
+		.nsleep_restart	= hrtimer_nanosleep_restart,
 	};
 	struct k_clock clock_monotonic_raw = {
 		.clock_getres	= hrtimer_get_res,
@@ -1027,22 +1029,13 @@ SYSCALL_DEFINE4(clock_nanosleep, const c
 }
 
 /*
- * nanosleep_restart for monotonic and realtime clocks
- */
-static int common_nsleep_restart(struct restart_block *restart_block)
-{
-	return hrtimer_nanosleep_restart(restart_block);
-}
-
-/*
  * This will restart clock_nanosleep. This is required only by
  * compat_clock_nanosleep_restart for now.
  */
-long
-clock_nanosleep_restart(struct restart_block *restart_block)
+long clock_nanosleep_restart(struct restart_block *restart_block)
 {
 	clockid_t which_clock = restart_block->arg0;
+	struct k_clock *kc = clockid_to_kclock(which_clock);
 
-	return CLOCK_DISPATCH(which_clock, nsleep_restart,
-			      (restart_block));
+	return kc->nsleep_restart(restart_block);
 }


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