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authorViresh Kumar <viresh.kumar@linaro.org>2013-09-16 17:26:03 +0400
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-09-30 22:18:40 +0400
commit27047a603645d0885bcd72d7a0b6cce6e3c94ca7 (patch)
tree127e4ab6c9f749d1917014c7bb84e0d63655aad5 /include/linux/cpufreq.h
parent15c03dd4859ab16f9212238f29dd315654aa94f6 (diff)
downloadlinux-27047a603645d0885bcd72d7a0b6cce6e3c94ca7.tar.xz
cpufreq: Add new helper cpufreq_table_validate_and_show()
Almost every cpufreq driver is required to validate its frequency table with: cpufreq_frequency_table_cpuinfo() and then expose it to cpufreq core with: cpufreq_frequency_table_get_attr(). This patch creates another helper routine cpufreq_table_validate_and_show() that will do both these steps in a single call and will return 0 for success, error otherwise. This also fixes potential bugs in cpufreq drivers where people have called cpufreq_frequency_table_get_attr() before calling cpufreq_frequency_table_cpuinfo(), as the later may fail. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux/cpufreq.h')
-rw-r--r--include/linux/cpufreq.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index fcabc42d66ab..6b199ed7aa58 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -410,5 +410,7 @@ extern struct freq_attr cpufreq_freq_attr_scaling_available_freqs;
void cpufreq_frequency_table_get_attr(struct cpufreq_frequency_table *table,
unsigned int cpu);
void cpufreq_frequency_table_put_attr(unsigned int cpu);
+int cpufreq_table_validate_and_show(struct cpufreq_policy *policy,
+ struct cpufreq_frequency_table *table);
#endif /* _LINUX_CPUFREQ_H */