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authorViresh Kumar <viresh.kumar@linaro.org>2013-12-02 09:34:12 +0400
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-01-06 04:43:44 +0400
commitf7ba3b41e27129575201f0f9656e83fb67e86c3b (patch)
tree3d7499edac72668560510c7345785e222da8b3d0 /drivers/cpufreq
parent26ab1c62b6e1ed4720d533320d646866027ade09 (diff)
downloadlinux-f7ba3b41e27129575201f0f9656e83fb67e86c3b.tar.xz
cpufreq: Introduce cpufreq_notify_post_transition()
This introduces a new routine cpufreq_notify_post_transition() which can be used to send POSTCHANGE notification for new freq with or without both {PRE|POST}CHANGE notifications for last freq. This is useful at multiple places, especially for sending transition failure notifications. 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')
-rw-r--r--drivers/cpufreq/cpufreq.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index a42e6aec4aad..a123a731ec4e 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -320,6 +320,20 @@ void cpufreq_notify_transition(struct cpufreq_policy *policy,
}
EXPORT_SYMBOL_GPL(cpufreq_notify_transition);
+/* Do post notifications when there are chances that transition has failed */
+void cpufreq_notify_post_transition(struct cpufreq_policy *policy,
+ struct cpufreq_freqs *freqs, int transition_failed)
+{
+ cpufreq_notify_transition(policy, freqs, CPUFREQ_POSTCHANGE);
+ if (!transition_failed)
+ return;
+
+ swap(freqs->old, freqs->new);
+ cpufreq_notify_transition(policy, freqs, CPUFREQ_PRECHANGE);
+ cpufreq_notify_transition(policy, freqs, CPUFREQ_POSTCHANGE);
+}
+EXPORT_SYMBOL_GPL(cpufreq_notify_post_transition);
+
/*********************************************************************
* SYSFS INTERFACE *