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Subject[PATCH 1/3] time: Add missing annotation to lock_hrtimer_base()
Sparse reports a warning at lock_hrtimer_base()

|warning: context imbalance in lock_hrtimer_base() - wrong count at exit
|warning: context imbalance in hrtimer_start_range_ns() - unexpected unlock
|warning: context imbalance in hrtimer_try_to_cancel() - unexpected unlock
|warning: context imbalance in __hrtimer_get_remaining()
|- unexpected unlock

To fix this , an __acquires(timer) annotation is added.
Given that lock_hrtimer_base() does actually call READ_ONCE(timer->base).
This not only fixes the warnings
but also improves on readability of the code.

Signed-off-by: Jules Irenge <>
kernel/time/hrtimer.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c
index 8de90ea31280..8f555b49395a 100644
--- a/kernel/time/hrtimer.c
+++ b/kernel/time/hrtimer.c
@@ -160,6 +160,7 @@ static inline bool is_migration_base(struct hrtimer_clock_base *base)
struct hrtimer_clock_base *lock_hrtimer_base(const struct hrtimer *timer,
unsigned long *flags)
+ __acquires(timer)
struct hrtimer_clock_base *base;

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