Commit 9a8fa00d authored by Maulik Shah's avatar Maulik Shah Committed by Ulf Hansson
Browse files

cpuidle: dt_idle_genpd: Add helper function to remove genpd topology 



Genpd parent and child domain topology created using dt_idle_pd_init_topology()
needs to be removed during error cases.

Add new helper function dt_idle_pd_remove_topology() for same.

Cc: stable@vger.kernel.org
Reviewed-by: default avatarUlf Hanssson <ulf.hansson@linaro.org>
Signed-off-by: default avatarMaulik Shah <quic_mkshah@quicinc.com>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 52a93d39

drivers/cpuidle/dt_idle_genpd.c

+24 −0
Original line number Original line Diff line number Diff line
@@ -152,6 +152,30 @@ int dt_idle_pd_init_topology(struct device_node *np) 
	return 0;

	return 0;

}

}





int dt_idle_pd_remove_topology(struct device_node *np)

{

	struct device_node *node;

	struct of_phandle_args child, parent;

	int ret;



	for_each_child_of_node(np, node) {

		if (of_parse_phandle_with_args(node, "power-domains",

					"#power-domain-cells", 0, &parent))

			continue;



		child.np = node;

		child.args_count = 0;

		ret = of_genpd_remove_subdomain(&parent, &child);

		of_node_put(parent.np);

		if (ret) {

			of_node_put(node);

			return ret;

		}

	}



	return 0;

}



struct device *dt_idle_attach_cpu(int cpu, const char *name)

struct device *dt_idle_attach_cpu(int cpu, const char *name)

{

{

	struct device *dev;

	struct device *dev;

drivers/cpuidle/dt_idle_genpd.h

+7 −0
Original line number Original line Diff line number Diff line
@@ -14,6 +14,8 @@ struct generic_pm_domain *dt_idle_pd_alloc(struct device_node *np, 




int dt_idle_pd_init_topology(struct device_node *np);

int dt_idle_pd_init_topology(struct device_node *np);





int dt_idle_pd_remove_topology(struct device_node *np);



struct device *dt_idle_attach_cpu(int cpu, const char *name);

struct device *dt_idle_attach_cpu(int cpu, const char *name);





void dt_idle_detach_cpu(struct device *dev);

void dt_idle_detach_cpu(struct device *dev);
@@ -36,6 +38,11 @@ static inline int dt_idle_pd_init_topology(struct device_node *np) 
	return 0;

	return 0;

}

}





static inline int dt_idle_pd_remove_topology(struct device_node *np)

{

	return 0;

}



static inline struct device *dt_idle_attach_cpu(int cpu, const char *name)

static inline struct device *dt_idle_attach_cpu(int cpu, const char *name)

{

{

	return NULL;

	return NULL;