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| author | Stratos Karafotis <stratosk@semaphore.gr> | 2014-04-25 22:15:23 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-04-30 00:05:31 +0200 |
| commit | 27e289dce29764e488c1e13e9aa6950cad1f4aab (patch) | |
| tree | 8904333726b188ff77958bfd293bfe789a88ac05 /drivers/cpufreq | |
| parent | Linux 3.15-rc3 (diff) | |
| download | linux-27e289dce29764e488c1e13e9aa6950cad1f4aab.tar.xz linux-27e289dce29764e488c1e13e9aa6950cad1f4aab.zip | |
cpufreq: Introduce macros for cpufreq_frequency_table iteration
Many cpufreq drivers need to iterate over the cpufreq_frequency_table
for various tasks.
This patch introduces two macros which can be used for iteration over
cpufreq_frequency_table keeping a common coding style across drivers:
- cpufreq_for_each_entry: iterate over each entry of the table
- cpufreq_for_each_valid_entry: iterate over each entry that contains
a valid frequency.
It should have no functional changes.
Signed-off-by: Stratos Karafotis <stratosk@semaphore.gr>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/cpufreq.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index abda6609d3e7..a517da996aaf 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -237,6 +237,17 @@ void cpufreq_cpu_put(struct cpufreq_policy *policy) } EXPORT_SYMBOL_GPL(cpufreq_cpu_put); +bool cpufreq_next_valid(struct cpufreq_frequency_table **pos) +{ + while ((*pos)->frequency != CPUFREQ_TABLE_END) + if ((*pos)->frequency != CPUFREQ_ENTRY_INVALID) + return true; + else + (*pos)++; + return false; +} +EXPORT_SYMBOL_GPL(cpufreq_next_valid); + /********************************************************************* * EXTERNALLY AFFECTING FREQUENCY CHANGES * *********************************************************************/ |