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x86/fixup_irq: Use cpu_online_mask instead of cpu_all_mask

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When one CPU is going down and this CPU is the last one in irq
affinity, current code is setting cpu_all_mask as the new
affinity for that irq.

But for some systems (such as in Medfield Android mobile) the
firmware sends the interrupt to each CPU in the irq affinity
mask, averaged, and cpu_all_mask includes all potential CPUs,
i.e. offline ones as well.

So replace cpu_all_mask with cpu_online_mask.

Signed-off-by: liu chuansheng <chuansheng.liu@intel.com>
Acked-by: Yanmin Zhang <yanmin_zhang@linux.intel.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/27240C0AC20F114CBF8149A2696CBE4A137286@SHSMSX101.ccr.corp.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Liu, Chuansheng 2012-08-14 06:55:01 +00:00 committed by Ingo Molnar
parent 83be4ffa1a
commit 2530cd4f44
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kernel/irq.c
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@ -270,7 +270,7 @@ void fixup_irqs(void)
if (cpumask_any_and(affinity, cpu_online_mask) >= nr_cpu_ids) {
break_affinity = 1;
affinity = cpu_all_mask;
affinity = cpu_online_mask;
}
chip = irq_data_get_irq_chip(data);