cpufreq: Add a get_current_driver helper

Add a helper function to return cpufreq_driver->name.

Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 2417576393a6..216c104d51ad 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1395,6 +1395,20 @@ static struct syscore_ops cpufreq_syscore_ops = {
         .resume         = cpufreq_bp_resume,
 };
 
+/**
+ *      cpufreq_get_current_driver - return current driver's name
+ *
+ *      Return the name string of the currently loaded cpufreq driver
+ *      or NULL, if none.
+ */
+const char *cpufreq_get_current_driver(void)
+{
+        if (cpufreq_driver)
+                return cpufreq_driver->name;
+
+        return NULL;
+}
+EXPORT_SYMBOL_GPL(cpufreq_get_current_driver);
 
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