diff options
Diffstat (limited to 'drivers/firmware/arm_scmi/notify.c')
| -rw-r--r-- | drivers/firmware/arm_scmi/notify.c | 45 |
1 files changed, 15 insertions, 30 deletions
diff --git a/drivers/firmware/arm_scmi/notify.c b/drivers/firmware/arm_scmi/notify.c index 023c93deb14b..9ca019dd0aeb 100644 --- a/drivers/firmware/arm_scmi/notify.c +++ b/drivers/firmware/arm_scmi/notify.c @@ -582,11 +582,9 @@ int scmi_notify(const struct scmi_handle *handle, u8 proto_id, u8 evt_id, struct scmi_event_header eh; struct scmi_notify_instance *ni; - /* Ensure notify_priv is updated */ - smp_rmb(); - if (!handle->notify_priv) + ni = scmi_notification_instance_data_get(handle); + if (!ni) return 0; - ni = handle->notify_priv; r_evt = SCMI_GET_REVT(ni, proto_id, evt_id); if (!r_evt) @@ -762,11 +760,9 @@ int scmi_register_protocol_events(const struct scmi_handle *handle, u8 proto_id, (!ee->num_sources && !ee->ops->get_num_sources)) return -EINVAL; - /* Ensure notify_priv is updated */ - smp_rmb(); - if (!handle->notify_priv) + ni = scmi_notification_instance_data_get(handle); + if (!ni) return -ENOMEM; - ni = handle->notify_priv; /* num_sources cannot be <= 0 */ if (ee->num_sources) { @@ -846,12 +842,10 @@ void scmi_deregister_protocol_events(const struct scmi_handle *handle, struct scmi_notify_instance *ni; struct scmi_registered_events_desc *pd; - /* Ensure notify_priv is updated */ - smp_rmb(); - if (!handle->notify_priv) + ni = scmi_notification_instance_data_get(handle); + if (!ni) return; - ni = handle->notify_priv; pd = ni->registered_protocols[proto_id]; if (!pd) return; @@ -1354,11 +1348,9 @@ static int scmi_register_notifier(const struct scmi_handle *handle, struct scmi_event_handler *hndl; struct scmi_notify_instance *ni; - /* Ensure notify_priv is updated */ - smp_rmb(); - if (!handle->notify_priv) + ni = scmi_notification_instance_data_get(handle); + if (!ni) return -ENODEV; - ni = handle->notify_priv; evt_key = MAKE_HASH_KEY(proto_id, evt_id, src_id ? *src_id : SRC_ID_MASK); @@ -1402,11 +1394,9 @@ static int scmi_unregister_notifier(const struct scmi_handle *handle, struct scmi_event_handler *hndl; struct scmi_notify_instance *ni; - /* Ensure notify_priv is updated */ - smp_rmb(); - if (!handle->notify_priv) + ni = scmi_notification_instance_data_get(handle); + if (!ni) return -ENODEV; - ni = handle->notify_priv; evt_key = MAKE_HASH_KEY(proto_id, evt_id, src_id ? *src_id : SRC_ID_MASK); @@ -1681,8 +1671,8 @@ int scmi_notification_init(struct scmi_handle *handle) INIT_WORK(&ni->init_work, scmi_protocols_late_init); + scmi_notification_instance_data_set(handle, ni); handle->notify_ops = ¬ify_ops; - handle->notify_priv = ni; /* Ensure handle is up to date */ smp_wmb(); @@ -1694,7 +1684,7 @@ int scmi_notification_init(struct scmi_handle *handle) err: dev_warn(handle->dev, "Initialization Failed.\n"); - devres_release_group(handle->dev, NULL); + devres_release_group(handle->dev, gid); return -ENOMEM; } @@ -1706,15 +1696,10 @@ void scmi_notification_exit(struct scmi_handle *handle) { struct scmi_notify_instance *ni; - /* Ensure notify_priv is updated */ - smp_rmb(); - if (!handle->notify_priv) + ni = scmi_notification_instance_data_get(handle); + if (!ni) return; - ni = handle->notify_priv; - - handle->notify_priv = NULL; - /* Ensure handle is up to date */ - smp_wmb(); + scmi_notification_instance_data_set(handle, NULL); /* Destroy while letting pending work complete */ destroy_workqueue(ni->notify_wq); |