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-rw-r--r--drivers/base/power/opp/core.c22
-rw-r--r--drivers/cpufreq/cpufreq-dt.c12
-rw-r--r--include/linux/pm_opp.h11
3 files changed, 20 insertions, 25 deletions
diff --git a/drivers/base/power/opp/core.c b/drivers/base/power/opp/core.c
index 4c7c6da7a989..2824d3a5e9f0 100644
--- a/drivers/base/power/opp/core.c
+++ b/drivers/base/power/opp/core.c
@@ -1316,7 +1316,7 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_put_prop_name);
* that this function is *NOT* called under RCU protection or in contexts where
* mutex cannot be locked.
*/
-int dev_pm_opp_set_regulator(struct device *dev, const char *name)
+struct opp_table *dev_pm_opp_set_regulator(struct device *dev, const char *name)
{
struct opp_table *opp_table;
struct regulator *reg;
@@ -1354,20 +1354,20 @@ int dev_pm_opp_set_regulator(struct device *dev, const char *name)
opp_table->regulator = reg;
mutex_unlock(&opp_table_lock);
- return 0;
+ return opp_table;
err:
_remove_opp_table(opp_table);
unlock:
mutex_unlock(&opp_table_lock);
- return ret;
+ return ERR_PTR(ret);
}
EXPORT_SYMBOL_GPL(dev_pm_opp_set_regulator);
/**
* dev_pm_opp_put_regulator() - Releases resources blocked for regulator
- * @dev: Device for which regulator was set.
+ * @opp_table: OPP table returned from dev_pm_opp_set_regulator().
*
* Locking: The internal opp_table and opp structures are RCU protected.
* Hence this function internally uses RCU updater strategy with mutex locks
@@ -1375,22 +1375,12 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_set_regulator);
* that this function is *NOT* called under RCU protection or in contexts where
* mutex cannot be locked.
*/
-void dev_pm_opp_put_regulator(struct device *dev)
+void dev_pm_opp_put_regulator(struct opp_table *opp_table)
{
- struct opp_table *opp_table;
-
mutex_lock(&opp_table_lock);
- /* Check for existing table for 'dev' first */
- opp_table = _find_opp_table(dev);
- if (IS_ERR(opp_table)) {
- dev_err(dev, "Failed to find opp_table: %ld\n",
- PTR_ERR(opp_table));
- goto unlock;
- }
-
if (IS_ERR(opp_table->regulator)) {
- dev_err(dev, "%s: Doesn't have regulator set\n", __func__);
+ pr_err("%s: Doesn't have regulator set\n", __func__);
goto unlock;
}
diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c
index 5c07ae05d69a..4d3ec92cbabf 100644
--- a/drivers/cpufreq/cpufreq-dt.c
+++ b/drivers/cpufreq/cpufreq-dt.c
@@ -28,6 +28,7 @@
#include "cpufreq-dt.h"
struct private_data {
+ struct opp_table *opp_table;
struct device *cpu_dev;
struct thermal_cooling_device *cdev;
const char *reg_name;
@@ -143,6 +144,7 @@ static int resources_available(void)
static int cpufreq_init(struct cpufreq_policy *policy)
{
struct cpufreq_frequency_table *freq_table;
+ struct opp_table *opp_table = NULL;
struct private_data *priv;
struct device *cpu_dev;
struct clk *cpu_clk;
@@ -186,8 +188,9 @@ static int cpufreq_init(struct cpufreq_policy *policy)
*/
name = find_supply_name(cpu_dev);
if (name) {
- ret = dev_pm_opp_set_regulator(cpu_dev, name);
- if (ret) {
+ opp_table = dev_pm_opp_set_regulator(cpu_dev, name);
+ if (IS_ERR(opp_table)) {
+ ret = PTR_ERR(opp_table);
dev_err(cpu_dev, "Failed to set regulator for cpu%d: %d\n",
policy->cpu, ret);
goto out_put_clk;
@@ -237,6 +240,7 @@ static int cpufreq_init(struct cpufreq_policy *policy)
}
priv->reg_name = name;
+ priv->opp_table = opp_table;
ret = dev_pm_opp_init_cpufreq_table(cpu_dev, &freq_table);
if (ret) {
@@ -285,7 +289,7 @@ out_free_priv:
out_free_opp:
dev_pm_opp_of_cpumask_remove_table(policy->cpus);
if (name)
- dev_pm_opp_put_regulator(cpu_dev);
+ dev_pm_opp_put_regulator(opp_table);
out_put_clk:
clk_put(cpu_clk);
@@ -300,7 +304,7 @@ static int cpufreq_exit(struct cpufreq_policy *policy)
dev_pm_opp_free_cpufreq_table(priv->cpu_dev, &policy->freq_table);
dev_pm_opp_of_cpumask_remove_table(policy->related_cpus);
if (priv->reg_name)
- dev_pm_opp_put_regulator(priv->cpu_dev);
+ dev_pm_opp_put_regulator(priv->opp_table);
clk_put(policy->clk);
kfree(priv);
diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
index bca26157f5b6..f6bc76501912 100644
--- a/include/linux/pm_opp.h
+++ b/include/linux/pm_opp.h
@@ -19,6 +19,7 @@
struct dev_pm_opp;
struct device;
+struct opp_table;
enum dev_pm_opp_event {
OPP_EVENT_ADD, OPP_EVENT_REMOVE, OPP_EVENT_ENABLE, OPP_EVENT_DISABLE,
@@ -62,8 +63,8 @@ int dev_pm_opp_set_supported_hw(struct device *dev, const u32 *versions,
void dev_pm_opp_put_supported_hw(struct device *dev);
int dev_pm_opp_set_prop_name(struct device *dev, const char *name);
void dev_pm_opp_put_prop_name(struct device *dev);
-int dev_pm_opp_set_regulator(struct device *dev, const char *name);
-void dev_pm_opp_put_regulator(struct device *dev);
+struct opp_table *dev_pm_opp_set_regulator(struct device *dev, const char *name);
+void dev_pm_opp_put_regulator(struct opp_table *opp_table);
int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq);
int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask);
int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask);
@@ -170,12 +171,12 @@ static inline int dev_pm_opp_set_prop_name(struct device *dev, const char *name)
static inline void dev_pm_opp_put_prop_name(struct device *dev) {}
-static inline int dev_pm_opp_set_regulator(struct device *dev, const char *name)
+static inline struct opp_table *dev_pm_opp_set_regulator(struct device *dev, const char *name)
{
- return -ENOTSUPP;
+ return ERR_PTR(-ENOTSUPP);
}
-static inline void dev_pm_opp_put_regulator(struct device *dev) {}
+static inline void dev_pm_opp_put_regulator(struct opp_table *opp_table) {}
static inline int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
{