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posix-timers: Zero settings value in common code 

Zero out the settings struct in the common code so the callbacks do not
have to do it themself.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: John Stultz <john.stultz@linaro.org>
Link: http://lkml.kernel.org/r/20170530211657.200870713@linutronix.de
This commit is contained in:
Thomas Gleixner 2017-05-30 23:15:51 +02:00
parent 91d57bae08
commit eabdec0438
2 changed files with 2 additions and 6 deletions
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5
kernel/time/posix-cpu-timers.c
View File

@ -719,10 +719,8 @@ static void posix_cpu_timer_get(struct k_itimer *timer, struct itimerspec64 *itp
*/
itp->it_interval = ns_to_timespec64(timer->it.cpu.incr);
if (timer->it.cpu.expires == 0) { /* Timer not armed at all. */
itp->it_value.tv_sec = itp->it_value.tv_nsec = 0;
if (!timer->it.cpu.expires)
return;
}
/*
* Sample the clock to take the difference with the expiry time.
@ -746,7 +744,6 @@ static void posix_cpu_timer_get(struct k_itimer *timer, struct itimerspec64 *itp
* Call the timer disarmed, nothing else to do.
*/
timer->it.cpu.expires = 0;
itp->it_value = ns_to_timespec64(timer->it.cpu.expires);
return;
} else {
cpu_timer_sample_group(timer->it_clock, p, &now);

3
kernel/time/posix-timers.c
View File

@ -645,8 +645,6 @@ common_timer_get(struct k_itimer *timr, struct itimerspec64 *cur_setting)
struct timespec64 ts64;
bool sig_none;
memset(cur_setting, 0, sizeof(*cur_setting));
sig_none = (timr->it_sigev_notify & ~SIGEV_THREAD_ID) != SIGEV_NONE;
iv = timr->it_interval;
@ -705,6 +703,7 @@ SYSCALL_DEFINE2(timer_gettime, timer_t, timer_id,
if (!timr)
return -EINVAL;
memset(&cur_setting64, 0, sizeof(cur_setting64));
kc = timr->kclock;
if (WARN_ON_ONCE(!kc || !kc->timer_get))
ret = -EINVAL;