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Diffstat (limited to 'drivers/scsi/libsas/sas_internal.h')
-rw-r--r--drivers/scsi/libsas/sas_internal.h19
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/scsi/libsas/sas_internal.h b/drivers/scsi/libsas/sas_internal.h
index 14e21b5fb8b..0d43408196f 100644
--- a/drivers/scsi/libsas/sas_internal.h
+++ b/drivers/scsi/libsas/sas_internal.h
@@ -76,6 +76,8 @@ struct domain_device *sas_find_dev_by_rphy(struct sas_rphy *rphy);
void sas_hae_reset(struct work_struct *work);
+void sas_free_device(struct kref *kref);
+
#ifdef CONFIG_SCSI_SAS_HOST_SMP
extern int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req,
struct request *rsp);
@@ -161,4 +163,21 @@ static inline void sas_add_parent_port(struct domain_device *dev, int phy_id)
sas_port_add_phy(ex->parent_port, ex_phy->phy);
}
+static inline struct domain_device *sas_alloc_device(void)
+{
+ struct domain_device *dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+
+ if (dev) {
+ INIT_LIST_HEAD(&dev->siblings);
+ INIT_LIST_HEAD(&dev->dev_list_node);
+ kref_init(&dev->kref);
+ }
+ return dev;
+}
+
+static inline void sas_put_device(struct domain_device *dev)
+{
+ kref_put(&dev->kref, sas_free_device);
+}
+
#endif /* _SAS_INTERNAL_H_ */