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| author | Viresh Kumar <viresh.kumar@linaro.org> | 2013-02-07 07:21:27 (GMT) |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-02-09 00:21:13 (GMT) |
| commit | 8e53695f7f1d005fd1fcd3b099cd1bd73683a9f5 (patch) | |
| tree | 12fea44f84d19819b8b07c1b1e8dcaf0a5952e00 /drivers/cpufreq/cpufreq.c | |
| parent | 4bd4e42819c7b5b2d608b353f4d9a7717e586479 (diff) | |
| download | linux-fsl-qoriq-8e53695f7f1d005fd1fcd3b099cd1bd73683a9f5.tar.xz | |
cpufreq: governors: Fix WARN_ON() for multi-policy platforms
On multi-policy systems there is a single instance of governor for both the
policies (if same governor is chosen for both policies). With the code update
from following patches:
8eeed09 cpufreq: governors: Get rid of dbs_data->enable field
b394058 cpufreq: governors: Reset tunables only for cpufreq_unregister_governor()
We are creating/removing sysfs directory of governor for for every call to
GOV_START and STOP. This would fail for multi-policy system as there is a
per-policy call to START/STOP.
This patch reuses the governor->initialized variable to detect total users of
governor.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq/cpufreq.c')
| -rw-r--r-- | drivers/cpufreq/cpufreq.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 0dc9933..cd76445 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1552,8 +1552,10 @@ static int __cpufreq_governor(struct cpufreq_policy *policy, policy->cpu, event); ret = policy->governor->governor(policy, event); - if (!policy->governor->initialized && (event == CPUFREQ_GOV_START)) - policy->governor->initialized = 1; + if (event == CPUFREQ_GOV_START) + policy->governor->initialized++; + else if (event == CPUFREQ_GOV_STOP) + policy->governor->initialized--; /* we keep one module reference alive for each CPU governed by this CPU */ |