diff options
| author | Dave Airlie <airlied@redhat.com> | 2016-07-02 15:56:01 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2016-07-02 15:56:01 +1000 |
| commit | 542d972221e024681b502033154f917c1455469f (patch) | |
| tree | 1c7c1be768f6e1b496a3edad6b105804a8d05c57 /drivers/base/power/opp/cpu.c | |
| parent | 583fa4e02775b26d76771d4e1ddc6f10ba005ef2 (diff) | |
| parent | 4c2e07c6a29e0129e975727b9f57eede813eea85 (diff) | |
Back-merge tag 'v4.7-rc5' into drm-next
Linux 4.7-rc5
The fsl-dcu pull needs -rc3 so go to -rc5 for now.
Diffstat (limited to 'drivers/base/power/opp/cpu.c')
| -rw-r--r-- | drivers/base/power/opp/cpu.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/base/power/opp/cpu.c b/drivers/base/power/opp/cpu.c index 83d6e7ba1a34..8c3434bdb26d 100644 --- a/drivers/base/power/opp/cpu.c +++ b/drivers/base/power/opp/cpu.c @@ -211,7 +211,7 @@ int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, } /* Mark opp-table as multiple CPUs are sharing it now */ - opp_table->shared_opp = true; + opp_table->shared_opp = OPP_TABLE_ACCESS_SHARED; } unlock: mutex_unlock(&opp_table_lock); @@ -227,7 +227,8 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_set_sharing_cpus); * * This updates the @cpumask with CPUs that are sharing OPPs with @cpu_dev. * - * Returns -ENODEV if OPP table isn't already present. + * Returns -ENODEV if OPP table isn't already present and -EINVAL if the OPP + * table's status is access-unknown. * * Locking: The internal opp_table and opp structures are RCU protected. * Hence this function internally uses RCU updater strategy with mutex locks @@ -249,9 +250,14 @@ int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask) goto unlock; } + if (opp_table->shared_opp == OPP_TABLE_ACCESS_UNKNOWN) { + ret = -EINVAL; + goto unlock; + } + cpumask_clear(cpumask); - if (opp_table->shared_opp) { + if (opp_table->shared_opp == OPP_TABLE_ACCESS_SHARED) { list_for_each_entry(opp_dev, &opp_table->dev_list, node) cpumask_set_cpu(opp_dev->dev->id, cpumask); } else { |