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Commit 73c1c57e authored by Trilok Soni's avatar Trilok Soni Committed by Gerrit - the friendly Code Review server
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qcom: msm: event-timer: Check the cpu num before adding a new event-timer 



The cpu on which the new event timer is setup is calculated from
the cpumask data sent to the api. Add a check to make sure that
the calculated cpu number is within bounds. If the cpu number is
out of bounds, use the first online cpu to setup the event timer.

Also add the same bounds check to the cpu used in the irq affinity
change notifier.

Change-Id: I9f552ec506f0e69188a60884c4d820782196e5cf
Signed-off-by: default avatarKarthik Parsha <kparsha@codeaurora.org>
parent a2342258

drivers/soc/qcom/event_timer.c

+7 −1
Original line number Diff line number Diff line 
/* Copyright (c) 2012, 2014, The Linux Foundation. All rights reserved.

/* Copyright (c) 2012, 2014-2015, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -101,6 +101,9 @@ struct event_timer_info *add_event_timer(uint32_t irq, 


		get_online_cpus();

		event_info->cpu = cpumask_any_and(mask, cpu_online_mask);

		if (event_info->cpu >= nr_cpu_ids)

			event_info->cpu = cpumask_first(cpu_online_mask);



		event_info->notify.notify = irq_affinity_change_notifier;

		event_info->notify.release = irq_affinity_release;

		irq_set_affinity_notifier(irq, &event_info->notify);
@@ -309,6 +312,9 @@ static void irq_affinity_change_notifier(struct irq_affinity_notify *notify, 
	 * the next affinity CPU.

	 */

	new_cpu = cpumask_any_and(mask_val, cpu_online_mask);

	if (new_cpu >= nr_cpu_ids)

		return;



	old_cpu = event->cpu;



	if (msm_event_debug_mask && MSM_EVENT_TIMER_DEBUG)