Add the devres-enabled version of dev_pm_domain_attach|detach_list.
If client drivers use devm_pm_domain_attach_list() to attach the PM domains,
devm_pm_domain_detach_list() will be invoked implicitly during remove phase.
Signed-off-by: Dikshita Agarwal <quic_dikshita@xxxxxxxxxxx>
---
drivers/base/power/common.c | 45 +++++++++++++++++++++++++++++++++++++++++++++
include/linux/pm_domain.h | 11 +++++++++++
2 files changed, 56 insertions(+)
diff --git a/drivers/base/power/common.c b/drivers/base/power/common.c
index 327d168..8c34ae1 100644
--- a/drivers/base/power/common.c
+++ b/drivers/base/power/common.c
@@ -277,6 +277,51 @@ int dev_pm_domain_attach_list(struct device *dev,
EXPORT_SYMBOL_GPL(dev_pm_domain_attach_list);
/**
+ * devm_pm_domain_detach_list - devres-enabled version of dev_pm_domain_detach_list.
+ * @_list: The list of PM domains to detach.
+ *
+ * This function reverse the actions from devm_pm_domain_attach_list().
+ * it will be invoked during the remove phase from drivers implicitly if driver
+ * uses devm_pm_domain_attach_list() to attach the PM domains.
+ */
+static void devm_pm_domain_detach_list(void *_list)
+{
+ struct dev_pm_domain_list *list = _list;
+
+ dev_pm_domain_detach_list(list);
+}
+
+/**
+ * devm_pm_domain_attach_list - devres-enabled version of dev_pm_domain_attach_list
+ * @dev: The device used to lookup the PM domains for.
+ * @data: The data used for attaching to the PM domains.
+ * @list: An out-parameter with an allocated list of attached PM domains.
+ *
+ * NOTE: this will also handle calling devm_pm_domain_detach_list() for
+ * you during remove phase.
+ *
+ * Returns the number of attached PM domains or a negative error code in case of
+ * a failure.
+ */
+int devm_pm_domain_attach_list(struct device *dev,
+ const struct dev_pm_domain_attach_data *data,
+ struct dev_pm_domain_list **list)
+{
+ int ret, num_pds;
+
+ num_pds = dev_pm_domain_attach_list(dev, data, list);
+ if (num_pds <= 0)
+ return num_pds;
+
+ ret = devm_add_action_or_reset(dev, devm_pm_domain_detach_list, *list);
+ if (ret)
+ return ret;
+
+ return num_pds;
+}
+EXPORT_SYMBOL_GPL(devm_pm_domain_attach_list);
+
+/**
* dev_pm_domain_detach - Detach a device from its PM domain.
* @dev: Device to detach.
* @power_off: Used to indicate whether we should power off the device.
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index 772d328..b01e127 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -450,6 +450,9 @@ struct device *dev_pm_domain_attach_by_name(struct device *dev,
int dev_pm_domain_attach_list(struct device *dev,
const struct dev_pm_domain_attach_data *data,
struct dev_pm_domain_list **list);
+int devm_pm_domain_attach_list(struct device *dev,
+ const struct dev_pm_domain_attach_data *data,
+ struct dev_pm_domain_list **list);
void dev_pm_domain_detach(struct device *dev, bool power_off);
void dev_pm_domain_detach_list(struct dev_pm_domain_list *list);
int dev_pm_domain_start(struct device *dev);
@@ -476,6 +479,14 @@ static inline int dev_pm_domain_attach_list(struct device *dev,
{
return 0;
}
+
+static inline int devm_pm_domain_attach_list(struct device *dev,
+ const struct dev_pm_domain_attach_data *data,
+ struct dev_pm_domain_list **list)
+{
+ return 0;
+}
+
static inline void dev_pm_domain_detach(struct device *dev, bool power_off) {}
static inline void dev_pm_domain_detach_list(struct dev_pm_domain_list *list) {}
static inline int dev_pm_domain_start(struct device *dev)
--
2.7.4
