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authorViresh Kumar <viresh.kumar@linaro.org>2018-10-03 15:12:06 +0530
committerViresh Kumar <viresh.kumar@linaro.org>2018-10-04 09:10:56 +0530
commit50b6b87c8484da8bb5dcce00f84ec80aee8fc2bd (patch)
tree041102715d10180d856b96791f75931d3931da10 /drivers/opp
parent5ed4cecd75e90232a19afa502cf477925854561e (diff)
downloadlinux-50b6b87c8484da8bb5dcce00f84ec80aee8fc2bd.tar.bz2
OPP: Improve error handling in dev_pm_opp_of_cpumask_add_table()
The error handling wasn't appropriate in dev_pm_opp_of_cpumask_add_table(). For example it returns 0 on success and also for the case where cpumask is empty or cpu_device wasn't found for any of the CPUs. It should really return error on such cases, so that the callers can be aware of the outcome. Fix it. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Diffstat (limited to 'drivers/opp')
-rw-r--r--drivers/opp/of.c18
1 files changed, 12 insertions, 6 deletions
diff --git a/drivers/opp/of.c b/drivers/opp/of.c
index a71ff3acca0f..67a384c8ead2 100644
--- a/drivers/opp/of.c
+++ b/drivers/opp/of.c
@@ -614,16 +614,18 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_of_cpumask_remove_table);
int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask)
{
struct device *cpu_dev;
- int cpu, ret = 0;
+ int cpu, ret;
- WARN_ON(cpumask_empty(cpumask));
+ if (WARN_ON(cpumask_empty(cpumask)))
+ return -ENODEV;
for_each_cpu(cpu, cpumask) {
cpu_dev = get_cpu_device(cpu);
if (!cpu_dev) {
pr_err("%s: failed to get cpu%d device\n", __func__,
cpu);
- continue;
+ ret = -ENODEV;
+ goto remove_table;
}
ret = dev_pm_opp_of_add_table(cpu_dev);
@@ -635,12 +637,16 @@ int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask)
pr_debug("%s: couldn't find opp table for cpu:%d, %d\n",
__func__, cpu, ret);
- /* Free all other OPPs */
- _dev_pm_opp_cpumask_remove_table(cpumask, cpu);
- break;
+ goto remove_table;
}
}
+ return 0;
+
+remove_table:
+ /* Free all other OPPs */
+ _dev_pm_opp_cpumask_remove_table(cpumask, cpu);
+
return ret;
}
EXPORT_SYMBOL_GPL(dev_pm_opp_of_cpumask_add_table);