diff options
| author | Viresh Kumar <viresh.kumar@linaro.org> | 2018-10-03 15:12:06 +0530 |
|---|---|---|
| committer | Viresh Kumar <viresh.kumar@linaro.org> | 2018-10-04 09:10:56 +0530 |
| commit | 50b6b87c8484da8bb5dcce00f84ec80aee8fc2bd (patch) | |
| tree | 041102715d10180d856b96791f75931d3931da10 /drivers | |
| parent | 5ed4cecd75e90232a19afa502cf477925854561e (diff) | |
| download | linux-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')
| -rw-r--r-- | drivers/opp/of.c | 18 |
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); |