From 6541aef01a9b308f280d3f2d26a46858e6dbef6a Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 12 Feb 2016 23:56:21 +0100 Subject: [PATCH] cpufreq: Drop unnecessary checks from show() and store() The show() and store() routines in the cpufreq core don't need to check if the struct freq_attr they want to use really provides the callbacks they need as expected (if that's not the case, it means a bug in the code anyway), so change them to avoid doing that. Signed-off-by: Rafael J. Wysocki Acked-by: Viresh Kumar --- drivers/cpufreq/cpufreq.c | 21 +++++---------------- 1 file changed, 5 insertions(+), 16 deletions(-) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 34b17447e0d1..78a262f3d9ab 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -818,12 +818,7 @@ static ssize_t show(struct kobject *kobj, struct attribute *attr, char *buf) ssize_t ret; down_read(&policy->rwsem); - - if (fattr->show) - ret = fattr->show(policy, buf); - else - ret = -EIO; - + ret = fattr->show(policy, buf); up_read(&policy->rwsem); return ret; @@ -838,18 +833,12 @@ static ssize_t store(struct kobject *kobj, struct attribute *attr, get_online_cpus(); - if (!cpu_online(policy->cpu)) - goto unlock; - - down_write(&policy->rwsem); - - if (fattr->store) + if (cpu_online(policy->cpu)) { + down_write(&policy->rwsem); ret = fattr->store(policy, buf, count); - else - ret = -EIO; + up_write(&policy->rwsem); + } - up_write(&policy->rwsem); -unlock: put_online_cpus(); return ret;