commit 421d1563c6620423d23e394711e3f209e585c161
author Thomas Gleixner <tglx@linutronix.de> Tue Mar 04 20:43:39 2014 +0000
committer Thomas Gleixner <tglx@linutronix.de> Wed Mar 12 13:07:40 2014 +0100
tree d457d6ee0fc69b8e1898392dece144f0589a3bc0
parent 785aebd0cfff52e735ad4fd188d3726b5affc8e5

mips: Validate online cpus in irq_set_affinity() callbacks

The [user space] interface does not filter out offline cpus. It merily
guarantees that the mask contains at least one online cpu.

So the selector in the irq chip implementation needs to make sure to
pick only an online cpu because otherwise:

     Offline Core 1
     Set affinity to 0xe (is valid due to online mask 0xd)
     cpumask_first will pick core 1, which is offline

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Link: http://lkml.kernel.org/r/20140304203100.744800502@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>