[PATCH 09/16] hrtimer: make lock_hrtimer_base() return void

[Viresh Kumar]

lock_hrtimer_base() always returns after taking lock and so timer->base can't
change further. So, callers of this routine can simply do timer->base to get the
base and so we can make this routine return void.

Signed-off-by: Viresh Kumar <viresh.ku...@linaro.org>
---
 kernel/hrtimer.c | 17 ++++++-----------
 1 file changed, 6 insertions(+), 11 deletions(-)

diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index d98c1ec..7d85b8f 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -149,9 +149,7 @@ static void hrtimer_get_softirq_time(struct 
hrtimer_cpu_base *base)
  * possible to set timer->base = NULL and drop the lock: the timer remains
  * locked.
  */
-static
-struct hrtimer_clock_base *lock_hrtimer_base(const struct hrtimer *timer,
-                                            unsigned long *flags)
+static void lock_hrtimer_base(const struct hrtimer *timer, unsigned long 
*flags)
 {
        struct hrtimer_clock_base *base;
 
@@ -160,7 +158,7 @@ struct hrtimer_clock_base *lock_hrtimer_base(const struct 
hrtimer *timer,
                if (likely(base != NULL)) {
                        raw_spin_lock_irqsave(&base->cpu_base->lock, *flags);
                        if (likely(base == timer->base))
-                               return base;
+                               return;
                        /* The timer has migrated to another CPU: */
                        raw_spin_unlock_irqrestore(&base->cpu_base->lock, 
*flags);
                }
@@ -236,14 +234,10 @@ again:
 
 #else /* CONFIG_SMP */
 
-static inline struct hrtimer_clock_base *
+static inline void
 lock_hrtimer_base(const struct hrtimer *timer, unsigned long *flags)
 {
-       struct hrtimer_clock_base *base = timer->base;
-
-       raw_spin_lock_irqsave(&base->cpu_base->lock, *flags);
-
-       return base;
+       raw_spin_lock_irqsave(&timer->base->cpu_base->lock, *flags);
 }
 
 static inline void switch_hrtimer_base(struct hrtimer *timer, int pinned) {}
@@ -944,7 +938,8 @@ int __hrtimer_start_range_ns(struct hrtimer *timer, ktime_t 
tim,
        unsigned long flags;
        int ret, leftmost;
 
-       base = lock_hrtimer_base(timer, &flags);
+       lock_hrtimer_base(timer, &flags);
+       base = timer->base;
 
        /* Remove an active timer from the queue: */
        ret = remove_hrtimer(timer);
-- 
1.7.12.rc2.18.g61b472e

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