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authorUlf Hansson <ulf.hansson@linaro.org>2022-05-11 16:57:01 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2022-05-19 20:16:05 +0200
commitba43d6db6e5c6d0b5f58d6487285ed58ba94c5df (patch)
tree4cf5decca150a55b61dd238be724804295b93db3 /drivers/base
parent622d9b5577f19a6472db21df042fea8f5fefe244 (diff)
downloadlinux-ba43d6db6e5c6d0b5f58d6487285ed58ba94c5df.tar.bz2
PM: domains: Clean up some code in pm_genpd_init() and genpd_remove()
To improve the readability of the code, let's move the parts that deals with allocation/freeing of data, into two separate functions. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/power/domain.c56
1 files changed, 38 insertions, 18 deletions
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index 9922fd763739..ac1eb7d2470b 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -1968,6 +1968,37 @@ static int genpd_set_default_power_state(struct generic_pm_domain *genpd)
return 0;
}
+static int genpd_alloc_data(struct generic_pm_domain *genpd)
+{
+ int ret;
+
+ if (genpd_is_cpu_domain(genpd) &&
+ !zalloc_cpumask_var(&genpd->cpus, GFP_KERNEL))
+ return -ENOMEM;
+
+ /* Use only one "off" state if there were no states declared */
+ if (genpd->state_count == 0) {
+ ret = genpd_set_default_power_state(genpd);
+ if (ret)
+ goto free;
+ }
+
+ return 0;
+
+free:
+ if (genpd_is_cpu_domain(genpd))
+ free_cpumask_var(genpd->cpus);
+ return ret;
+}
+
+static void genpd_free_data(struct generic_pm_domain *genpd)
+{
+ if (genpd_is_cpu_domain(genpd))
+ free_cpumask_var(genpd->cpus);
+ if (genpd->free_states)
+ genpd->free_states(genpd->states, genpd->state_count);
+}
+
static void genpd_lock_init(struct generic_pm_domain *genpd)
{
if (genpd->flags & GENPD_FLAG_IRQ_SAFE) {
@@ -2037,21 +2068,13 @@ int pm_genpd_init(struct generic_pm_domain *genpd,
!genpd_status_on(genpd))
return -EINVAL;
- if (genpd_is_cpu_domain(genpd) &&
- !zalloc_cpumask_var(&genpd->cpus, GFP_KERNEL))
- return -ENOMEM;
-
- /* Use only one "off" state if there were no states declared */
- if (genpd->state_count == 0) {
- ret = genpd_set_default_power_state(genpd);
- if (ret) {
- if (genpd_is_cpu_domain(genpd))
- free_cpumask_var(genpd->cpus);
- return ret;
- }
- } else if (!gov && genpd->state_count > 1) {
+ /* Multiple states but no governor doesn't make sense. */
+ if (!gov && genpd->state_count > 1)
pr_warn("%s: no governor for states\n", genpd->name);
- }
+
+ ret = genpd_alloc_data(genpd);
+ if (ret)
+ return ret;
device_initialize(&genpd->dev);
dev_set_name(&genpd->dev, "%s", genpd->name);
@@ -2096,10 +2119,7 @@ static int genpd_remove(struct generic_pm_domain *genpd)
genpd_unlock(genpd);
genpd_debug_remove(genpd);
cancel_work_sync(&genpd->power_off_work);
- if (genpd_is_cpu_domain(genpd))
- free_cpumask_var(genpd->cpus);
- if (genpd->free_states)
- genpd->free_states(genpd->states, genpd->state_count);
+ genpd_free_data(genpd);
pr_debug("%s: removed %s\n", __func__, genpd->name);