LLDDs are implementing their own attached phy finding code repeatedly.
Factor it out to libsas.
Signed-off-by: Jason Yan <yanaijie@xxxxxxxxxx>
---
drivers/scsi/libsas/sas_expander.c | 17 +++++++++++++++++
include/scsi/libsas.h | 2 ++
2 files changed, 19 insertions(+)
diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c
index fa2209080cc2..a5effff3d1c3 100644
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -2107,6 +2107,23 @@ int sas_ex_revalidate_domain(struct domain_device *port_dev)
return res;
}
+int sas_find_attached_phy(struct expander_device *ex_dev,
+ struct domain_device *dev)
+{
+ struct ex_phy *phy;
+ int phy_id;
+
+ for (phy_id = 0; phy_id < ex_dev->num_phys; phy_id++) {
+ phy = &ex_dev->ex_phy[phy_id];
+ if (SAS_ADDR(phy->attached_sas_addr)
+ == SAS_ADDR(dev->sas_addr))
+ return phy_id;
+ }
+
+ return -ENODEV;
+}
+EXPORT_SYMBOL_GPL(sas_find_attached_phy);
+
void sas_smp_handler(struct bsg_job *job, struct Scsi_Host *shost,
struct sas_rphy *rphy)
{
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index 2dbead74a2af..75faf2308eae 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -750,6 +750,8 @@ int sas_clear_task_set(struct domain_device *dev, u8 *lun);
int sas_lu_reset(struct domain_device *dev, u8 *lun);
int sas_query_task(struct sas_task *task, u16 tag);
int sas_abort_task(struct sas_task *task, u16 tag);
+int sas_find_attached_phy(struct expander_device *ex_dev,
+ struct domain_device *dev);
void sas_notify_port_event(struct asd_sas_phy *phy, enum port_event event,
gfp_t gfp_flags);
--
2.31.1
