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Mark Rutland a7dc19b865 clockevents: Don't allow dummy broadcast timers

Currently tick_check_broadcast_device doesn't reject clock_event_devices
with CLOCK_EVT_FEAT_DUMMY, and may select them in preference to real
hardware if they have a higher rating value. In this situation, the
dummy timer is responsible for broadcasting to itself, and the core
clockevents code may attempt to call non-existent callbacks for
programming the dummy, eventually leading to a panic.

This patch makes tick_check_broadcast_device always reject dummy timers,
preventing this problem.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Jon Medhurst (Tixy) <tixy@linaro.org>
Cc: stable@vger.kernel.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

2013-03-07 17:16:11 +01:00

alarmtimer.c

alarmtimer: Rename alarmtimer_remove to alarmtimer_dequeue

2012-09-24 12:38:03 -04:00

clockevents.c

clockevents: export clockevents_config_and_register for module use

2013-01-14 10:12:37 -08:00

clocksource.c

kernel-time: fix s/then/than/ spelling errors

2012-03-23 16:49:21 -07:00

jiffies.c

time: Kill xtime_lock, replacing it with jiffies_lock