diff options
| -rw-r--r-- | drivers/base/power/opp/core.c | 27 | ||||
| -rw-r--r-- | drivers/cpufreq/cpufreq-dt.c | 7 | ||||
| -rw-r--r-- | include/linux/pm_opp.h | 6 |
3 files changed, 17 insertions, 23 deletions
diff --git a/drivers/base/power/opp/core.c b/drivers/base/power/opp/core.c index dde7dd099aa0..614d779ab6a2 100644 --- a/drivers/base/power/opp/core.c +++ b/drivers/base/power/opp/core.c @@ -328,32 +328,31 @@ unsigned long dev_pm_opp_get_max_transition_latency(struct device *dev) EXPORT_SYMBOL_GPL(dev_pm_opp_get_max_transition_latency); /** - * dev_pm_opp_get_suspend_opp() - Get suspend opp + * dev_pm_opp_get_suspend_opp_freq() - Get frequency of suspend opp in Hz * @dev: device for which we do this operation * - * Return: This function returns pointer to the suspend opp if it is - * defined and available, otherwise it returns NULL. - * - * Locking: This function must be called under rcu_read_lock(). opp is a rcu - * protected pointer. The reason for the same is that the opp pointer which is - * returned will remain valid for use with opp_get_{voltage, freq} only while - * under the locked area. The pointer returned must be used prior to unlocking - * with rcu_read_unlock() to maintain the integrity of the pointer. + * Return: This function returns the frequency of the OPP marked as suspend_opp + * if one is available, else returns 0; */ -struct dev_pm_opp *dev_pm_opp_get_suspend_opp(struct device *dev) +unsigned long dev_pm_opp_get_suspend_opp_freq(struct device *dev) { struct opp_table *opp_table; + unsigned long freq = 0; - opp_rcu_lockdep_assert(); + rcu_read_lock(); opp_table = _find_opp_table(dev); if (IS_ERR(opp_table) || !opp_table->suspend_opp || !opp_table->suspend_opp->available) - return NULL; + goto unlock; - return opp_table->suspend_opp; + freq = dev_pm_opp_get_freq(opp_table->suspend_opp); + +unlock: + rcu_read_unlock(); + return freq; } -EXPORT_SYMBOL_GPL(dev_pm_opp_get_suspend_opp); +EXPORT_SYMBOL_GPL(dev_pm_opp_get_suspend_opp_freq); /** * dev_pm_opp_get_opp_count() - Get number of opps available in the opp table diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c index 269013311e79..c943787d761e 100644 --- a/drivers/cpufreq/cpufreq-dt.c +++ b/drivers/cpufreq/cpufreq-dt.c @@ -148,7 +148,6 @@ static int cpufreq_init(struct cpufreq_policy *policy) struct private_data *priv; struct device *cpu_dev; struct clk *cpu_clk; - struct dev_pm_opp *suspend_opp; unsigned int transition_latency; bool fallback = false; const char *name; @@ -252,11 +251,7 @@ static int cpufreq_init(struct cpufreq_policy *policy) policy->driver_data = priv; policy->clk = cpu_clk; - rcu_read_lock(); - suspend_opp = dev_pm_opp_get_suspend_opp(cpu_dev); - if (suspend_opp) - policy->suspend_freq = dev_pm_opp_get_freq(suspend_opp) / 1000; - rcu_read_unlock(); + policy->suspend_freq = dev_pm_opp_get_suspend_opp_freq(cpu_dev) / 1000; ret = cpufreq_table_validate_and_show(policy, freq_table); if (ret) { diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h index 0edd88f93904..7483ff291a8e 100644 --- a/include/linux/pm_opp.h +++ b/include/linux/pm_opp.h @@ -88,7 +88,7 @@ int dev_pm_opp_get_opp_count(struct device *dev); unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev); unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev); unsigned long dev_pm_opp_get_max_transition_latency(struct device *dev); -struct dev_pm_opp *dev_pm_opp_get_suspend_opp(struct device *dev); +unsigned long dev_pm_opp_get_suspend_opp_freq(struct device *dev); struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev, unsigned long freq, @@ -159,9 +159,9 @@ static inline unsigned long dev_pm_opp_get_max_transition_latency(struct device return 0; } -static inline struct dev_pm_opp *dev_pm_opp_get_suspend_opp(struct device *dev) +static inline unsigned long dev_pm_opp_get_suspend_opp_freq(struct device *dev) { - return NULL; + return 0; } static inline struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev, |