These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / drivers / cpufreq / cpufreq_opp.c

diff --git a/kernel/drivers/cpufreq/cpufreq_opp.c b/kernel/drivers/cpufreq/cpufreq_opp.c
deleted file mode 100644 (file)
index 773bcde..0000000
--- a/kernel/drivers/cpufreq/cpufreq_opp.c
+++ /dev/null
@@ -1,110 +0,0 @@
-/*
- * Generic OPP helper interface for CPUFreq drivers
- *
- * Copyright (C) 2009-2014 Texas Instruments Incorporated.
- *     Nishanth Menon
- *     Romit Dasgupta
- *     Kevin Hilman
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/cpufreq.h>
-#include <linux/device.h>
-#include <linux/err.h>
-#include <linux/errno.h>
-#include <linux/export.h>
-#include <linux/kernel.h>
-#include <linux/pm_opp.h>
-#include <linux/rcupdate.h>
-#include <linux/slab.h>
-
-/**
- * dev_pm_opp_init_cpufreq_table() - create a cpufreq table for a device
- * @dev:       device for which we do this operation
- * @table:     Cpufreq table returned back to caller
- *
- * Generate a cpufreq table for a provided device- this assumes that the
- * opp list is already initialized and ready for usage.
- *
- * This function allocates required memory for the cpufreq table. It is
- * expected that the caller does the required maintenance such as freeing
- * the table as required.
- *
- * Returns -EINVAL for bad pointers, -ENODEV if the device is not found, -ENOMEM
- * if no memory available for the operation (table is not populated), returns 0
- * if successful and table is populated.
- *
- * WARNING: It is  important for the callers to ensure refreshing their copy of
- * the table if any of the mentioned functions have been invoked in the interim.
- *
- * Locking: The internal device_opp and opp structures are RCU protected.
- * Since we just use the regular accessor functions to access the internal data
- * structures, we use RCU read lock inside this function. As a result, users of
- * this function DONOT need to use explicit locks for invoking.
- */
-int dev_pm_opp_init_cpufreq_table(struct device *dev,
-                                 struct cpufreq_frequency_table **table)
-{
-       struct dev_pm_opp *opp;
-       struct cpufreq_frequency_table *freq_table = NULL;
-       int i, max_opps, ret = 0;
-       unsigned long rate;
-
-       rcu_read_lock();
-
-       max_opps = dev_pm_opp_get_opp_count(dev);
-       if (max_opps <= 0) {
-               ret = max_opps ? max_opps : -ENODATA;
-               goto out;
-       }
-
-       freq_table = kcalloc((max_opps + 1), sizeof(*freq_table), GFP_ATOMIC);
-       if (!freq_table) {
-               ret = -ENOMEM;
-               goto out;
-       }
-
-       for (i = 0, rate = 0; i < max_opps; i++, rate++) {
-               /* find next rate */
-               opp = dev_pm_opp_find_freq_ceil(dev, &rate);
-               if (IS_ERR(opp)) {
-                       ret = PTR_ERR(opp);
-                       goto out;
-               }
-               freq_table[i].driver_data = i;
-               freq_table[i].frequency = rate / 1000;
-       }
-
-       freq_table[i].driver_data = i;
-       freq_table[i].frequency = CPUFREQ_TABLE_END;
-
-       *table = &freq_table[0];
-
-out:
-       rcu_read_unlock();
-       if (ret)
-               kfree(freq_table);
-
-       return ret;
-}
-EXPORT_SYMBOL_GPL(dev_pm_opp_init_cpufreq_table);
-
-/**
- * dev_pm_opp_free_cpufreq_table() - free the cpufreq table
- * @dev:       device for which we do this operation
- * @table:     table to free
- *
- * Free up the table allocated by dev_pm_opp_init_cpufreq_table
- */
-void dev_pm_opp_free_cpufreq_table(struct device *dev,
-                                  struct cpufreq_frequency_table **table)
-{
-       if (!table)
-               return;
-
-       kfree(*table);
-       *table = NULL;
-}
-EXPORT_SYMBOL_GPL(dev_pm_opp_free_cpufreq_table);