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PM / OPP don't match for existing OPPs when list is empty 

OPP list is guaranteed to be empty when 'dev_opp' is created. And so we don't
need to run the comparison loop with existing OPPs.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Viresh Kumar 2014-11-25 16:04:17 +05:30 committed by Rafael J. Wysocki
parent cd1a068a52
commit a7470db6fe
1 changed files with 9 additions and 6 deletions
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15
drivers/base/power/opp.c
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@ -417,6 +417,12 @@ int dev_pm_opp_add(struct device *dev, unsigned long freq, unsigned long u_volt)
/* Hold our list modification lock here */
mutex_lock(&dev_opp_list_lock);
/* populate the opp table */
new_opp->dev_opp = dev_opp;
new_opp->rate = freq;
new_opp->u_volt = u_volt;
new_opp->available = true;
/* Check for existing list for 'dev' */
dev_opp = find_device_opp(dev);
if (IS_ERR(dev_opp)) {
@ -441,14 +447,10 @@ int dev_pm_opp_add(struct device *dev, unsigned long freq, unsigned long u_volt)
/* Secure the device list modification */
list_add_rcu(&dev_opp->node, &dev_opp_list);
head = &dev_opp->opp_list;
goto list_add;
}
/* populate the opp table */
new_opp->dev_opp = dev_opp;
new_opp->rate = freq;
new_opp->u_volt = u_volt;
new_opp->available = true;
/*
* Insert new OPP in order of increasing frequency
* and discard if already present
@ -474,6 +476,7 @@ int dev_pm_opp_add(struct device *dev, unsigned long freq, unsigned long u_volt)
return ret;
}
list_add:
list_add_rcu(&new_opp->node, head);
mutex_unlock(&dev_opp_list_lock);