diff options
| author | Allen Martin <amartin@nvidia.com> | 2011-06-30 16:59:19 -0700 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2011-11-30 21:38:51 -0800 |
| commit | a7c29e35d3c78f9180eeedf9a740479a5f50aa5a (patch) | |
| tree | 6b665f63b6bb7d8bc3333bea2dabbb4502ff87df /drivers/cpufreq | |
| parent | 841212573f95bb02a1b447211300fd9b31e5fa80 (diff) | |
cpufreq: interactive: Add error checking on sysfs interfaces
This adds better error checking on tunable parameters on sysfs
interfaces. Also fixes return value from these functions, previously
on success they would return 0 which would cause a infinite loop.
Change-Id: Ic05038492166f8673d007202092471f98a2f0dfa
Signed-off-by: Allen Martin <amartin@nvidia.com>
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/cpufreq_interactive.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/cpufreq/cpufreq_interactive.c b/drivers/cpufreq/cpufreq_interactive.c index 9100c3b6adf5..fe20e3142c6e 100644 --- a/drivers/cpufreq/cpufreq_interactive.c +++ b/drivers/cpufreq/cpufreq_interactive.c @@ -394,7 +394,14 @@ static ssize_t show_go_maxspeed_load(struct kobject *kobj, static ssize_t store_go_maxspeed_load(struct kobject *kobj, struct attribute *attr, const char *buf, size_t count) { - return strict_strtoul(buf, 0, &go_maxspeed_load); + int ret; + unsigned long val; + + ret = strict_strtoul(buf, 0, &val); + if (ret < 0) + return ret; + go_maxspeed_load = val; + return count; } static struct global_attr go_maxspeed_load_attr = __ATTR(go_maxspeed_load, 0644, @@ -409,7 +416,14 @@ static ssize_t show_min_sample_time(struct kobject *kobj, static ssize_t store_min_sample_time(struct kobject *kobj, struct attribute *attr, const char *buf, size_t count) { - return strict_strtoul(buf, 0, &min_sample_time); + int ret; + unsigned long val; + + ret = strict_strtoul(buf, 0, &val); + if (ret < 0) + return ret; + min_sample_time = val; + return count; } static struct global_attr min_sample_time_attr = __ATTR(min_sample_time, 0644, |