cpu/hotplug: Handle unbalanced hotplug enable/disable
authorLianwei Wang <lianwei.wang@gmail.com>
Fri, 10 Jun 2016 06:43:28 +0000 (23:43 -0700)
committerThomas Gleixner <tglx@linutronix.de>
Fri, 2 Sep 2016 18:37:17 +0000 (20:37 +0200)
commit01b41159066531cc8d664362ff0cd89dd137bbfa
treeae1514bb4d6e3a845d4b5159629ac730119b4bd8
parent8017c279196ab29174bafc104ac4ebbd42c7ca7f
cpu/hotplug: Handle unbalanced hotplug enable/disable

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>
kernel/cpu.c