From: Viresh Kumar <viresh.kumar@linaro.org>
Date: Thu, 12 Sep 2013 11:36:33 +0000 (+0530)
Subject: cpufreq: Clear policy->cpus bits in __cpufreq_remove_dev_finish()
X-Git-Tag: v3.12-rc2~7^2^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9c8f1ee40b6368e6b2775c9c9f816e2a5dca3c07;p=pandora-kernel.git

cpufreq: Clear policy->cpus bits in __cpufreq_remove_dev_finish()

This broke after a recent change "cedb70a cpufreq: Split __cpufreq_remove_dev()
into two parts" from Srivatsa.

Consider a scenario where we have two CPUs in a policy (0 & 1) and we are
removing CPU 1. On the call to __cpufreq_remove_dev_prepare() we have cleared 1
from policy->cpus and now on a call to __cpufreq_remove_dev_finish() we read
cpumask_weight of policy->cpus, which will come as 1 and this code will behave
as if we are removing the last CPU from policy :)

Fix it by clearing the CPU mask in __cpufreq_remove_dev_finish() instead of
__cpufreq_remove_dev_prepare().

Tested-by: Stephen Warren <swarren@wwwdotorg.org>
Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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