提交 0159ec67 编写于 作者: J Jon Hunter 提交者: Rafael J. Wysocki

PM / Domains: Verify the PM domain is present when adding a provider

When a PM domain provider is added, there is currently no way to tell if
any PM domains associated with the provider are present. Naturally, the
PM domain provider should not be registered if the PM domains have not
been added. Nonetheless, verify that the PM domain(s) associated with a
provider are present when registering the PM domain provider.

This change adds a dependency on the function pm_genpd_present() when
CONFIG_PM_GENERIC_DOMAINS_OF is enabled and so ensure this function is
available when CONFIG_PM_GENERIC_DOMAINS_OF selected.
Signed-off-by: NJon Hunter <jonathanh@nvidia.com>
Acked-by: NUlf Hansson <ulf.hansson@linaro.org>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
上级 892ebdcc
......@@ -586,7 +586,7 @@ static int __init genpd_poweroff_unused(void)
}
late_initcall(genpd_poweroff_unused);
#ifdef CONFIG_PM_SLEEP
#if defined(CONFIG_PM_SLEEP) || defined(CONFIG_PM_GENERIC_DOMAINS_OF)
/**
* pm_genpd_present - Check if the given PM domain has been initialized.
......@@ -606,6 +606,10 @@ static bool pm_genpd_present(const struct generic_pm_domain *genpd)
return false;
}
#endif
#ifdef CONFIG_PM_SLEEP
static bool genpd_dev_active_wakeup(struct generic_pm_domain *genpd,
struct device *dev)
{
......@@ -1453,7 +1457,19 @@ static int genpd_add_provider(struct device_node *np, genpd_xlate_t xlate,
int of_genpd_add_provider_simple(struct device_node *np,
struct generic_pm_domain *genpd)
{
return genpd_add_provider(np, genpd_xlate_simple, genpd);
int ret = -EINVAL;
if (!np || !genpd)
return -EINVAL;
mutex_lock(&gpd_list_lock);
if (pm_genpd_present(genpd))
ret = genpd_add_provider(np, genpd_xlate_simple, genpd);
mutex_unlock(&gpd_list_lock);
return ret;
}
EXPORT_SYMBOL_GPL(of_genpd_add_provider_simple);
......@@ -1465,7 +1481,26 @@ EXPORT_SYMBOL_GPL(of_genpd_add_provider_simple);
int of_genpd_add_provider_onecell(struct device_node *np,
struct genpd_onecell_data *data)
{
return genpd_add_provider(np, genpd_xlate_onecell, data);
unsigned int i;
int ret;
if (!np || !data)
return -EINVAL;
mutex_lock(&gpd_list_lock);
for (i = 0; i < data->num_domains; i++) {
if (!pm_genpd_present(data->domains[i])) {
mutex_unlock(&gpd_list_lock);
return -EINVAL;
}
}
ret = genpd_add_provider(np, genpd_xlate_onecell, data);
mutex_unlock(&gpd_list_lock);
return ret;
}
EXPORT_SYMBOL_GPL(of_genpd_add_provider_onecell);
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册