cpu/hotplug: Handle unbalanced hotplug enable/disable

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When cpu_hotplug_enable() is called unbalanced w/o a preceeding
cpu_hotplug_disable() the code emits a warning, but happily decrements the
disabled counter. This causes the next operations to malfunction.

Prevent the decrement and just emit a warning.

Signed-off-by: Lianwei Wang <lianwei.wang@gmail.com>
Cc: peterz@infradead.org
Cc: linux-pm@vger.kernel.org
Cc: oleg@redhat.com
Link: http://lkml.kernel.org/r/1465541008-12476-1-git-send-email-lianwei.wang@gmail.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

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Lianwei Wang 2016-06-09 23:43:28 -07:00 • committed by Thomas Gleixner

parent 8017c27919

commit 01b4115906

1 changed files with 9 additions and 2 deletions

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kernel/cpu.c

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