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clocksource: Let timekeeping_notify return success/error

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timekeeping_notify() can fail due cs->enable() failure. Though the
caller does not notice and happily keeps the wrong clocksource as the
current one.

Let the caller know about failure, so the current clocksource will be
shown correctly in sysfs.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: John Stultz <john.stultz@linaro.org>
Cc: Magnus Damm <magnus.damm@gmail.com>
Link: http://lkml.kernel.org/r/20130425143435.696321912@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2013-04-25 20:31:44 +00:00
parent 5d33b883ae
commit ba919d1caa
3 changed files with 7 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

6
kernel/time/clocksource.c
View file

@ -611,10 +611,10 @@ static void clocksource_select(void)
best = cs;
break;
}
if (curr_clocksource != best) {
printk(KERN_INFO "Switching to clocksource %s\n", best->name);
if (curr_clocksource != best && !timekeeping_notify(best)) {
pr_info("Switched to clocksource %s\n", best->name);
curr_clocksource = best;
timekeeping_notify(curr_clocksource);
}
}