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authorViresh Kumar <viresh.kumar@linaro.org>2019-07-04 13:06:18 +0530
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2019-07-04 10:40:54 +0200
commit8262331eaaf751076fb2c781f492bafd8344591d (patch)
treefd32e6cc15962147ae3ce0b5cafa9d1b93c4dff5 /drivers/base
parent0b07ee944701dabcddc294d903b5e8e21c2c5d95 (diff)
downloadlinux-8262331eaaf751076fb2c781f492bafd8344591d.tar.bz2
PM / QOS: Rename __dev_pm_qos_read_value() and dev_pm_qos_raw_read_value()
dev_pm_qos_read_value() will soon need to support more constraint types (min/max frequency) and will have another argument to it, i.e. type of the constraint. While that is fine for the existing users of dev_pm_qos_read_value(), but not that optimal for the callers of __dev_pm_qos_read_value() and dev_pm_qos_raw_read_value() as all the callers of these two routines are only looking for resume latency constraint. Lets make these two routines care only about the resume latency constraint and rename them to __dev_pm_qos_resume_latency() and dev_pm_qos_raw_resume_latency(). Suggested-by: Rafael J. Wysocki <rjw@rjwysocki.net> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/power/domain_governor.c2
-rw-r--r--drivers/base/power/qos.c13
-rw-r--r--drivers/base/power/runtime.c2
3 files changed, 11 insertions, 6 deletions
diff --git a/drivers/base/power/domain_governor.c b/drivers/base/power/domain_governor.c
index 3838045c9277..20e56a5be01f 100644
--- a/drivers/base/power/domain_governor.c
+++ b/drivers/base/power/domain_governor.c
@@ -66,7 +66,7 @@ static bool default_suspend_ok(struct device *dev)
td->constraint_changed = false;
td->cached_suspend_ok = false;
td->effective_constraint_ns = 0;
- constraint_ns = __dev_pm_qos_read_value(dev);
+ constraint_ns = __dev_pm_qos_resume_latency(dev);
spin_unlock_irqrestore(&dev->power.lock, flags);
diff --git a/drivers/base/power/qos.c b/drivers/base/power/qos.c
index cfd463212513..7a0d197f0809 100644
--- a/drivers/base/power/qos.c
+++ b/drivers/base/power/qos.c
@@ -90,16 +90,16 @@ enum pm_qos_flags_status dev_pm_qos_flags(struct device *dev, s32 mask)
EXPORT_SYMBOL_GPL(dev_pm_qos_flags);
/**
- * __dev_pm_qos_read_value - Get PM QoS constraint for a given device.
+ * __dev_pm_qos_resume_latency - Get resume latency constraint for a given device.
* @dev: Device to get the PM QoS constraint value for.
*
* This routine must be called with dev->power.lock held.
*/
-s32 __dev_pm_qos_read_value(struct device *dev)
+s32 __dev_pm_qos_resume_latency(struct device *dev)
{
lockdep_assert_held(&dev->power.lock);
- return dev_pm_qos_raw_read_value(dev);
+ return dev_pm_qos_raw_resume_latency(dev);
}
/**
@@ -112,7 +112,12 @@ s32 dev_pm_qos_read_value(struct device *dev)
s32 ret;
spin_lock_irqsave(&dev->power.lock, flags);
- ret = __dev_pm_qos_read_value(dev);
+
+ if (IS_ERR_OR_NULL(dev->power.qos))
+ ret = PM_QOS_RESUME_LATENCY_NO_CONSTRAINT;
+ else
+ ret = pm_qos_read_value(&dev->power.qos->resume_latency);
+
spin_unlock_irqrestore(&dev->power.lock, flags);
return ret;
diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c
index 952a1e7057c7..b75335508d2c 100644
--- a/drivers/base/power/runtime.c
+++ b/drivers/base/power/runtime.c
@@ -275,7 +275,7 @@ static int rpm_check_suspend_allowed(struct device *dev)
|| (dev->power.request_pending
&& dev->power.request == RPM_REQ_RESUME))
retval = -EAGAIN;
- else if (__dev_pm_qos_read_value(dev) == 0)
+ else if (__dev_pm_qos_resume_latency(dev) == 0)
retval = -EPERM;
else if (dev->power.runtime_status == RPM_SUSPENDED)
retval = 1;