On 9/27/22 11:29, Jason Yan wrote:
> LLDDs are implementing their own attached phy finding code repeatedly.
> Factor it out to libsas.
>
> Signed-off-by: Jason Yan <yanaijie@xxxxxxxxxx>
> Reviewed-by: Jack Wang <jinpu.wang@xxxxxxxxx>
Reviewed-by: Damien Le Moal <damien.lemoal@xxxxxxxxxxxxxxxxxx>
> ---
> drivers/scsi/libsas/sas_expander.c | 16 ++++++++++++++++
> include/scsi/libsas.h | 2 ++
> 2 files changed, 18 insertions(+)
>
> diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c
> index fa2209080cc2..df5a64ad902f 100644
> --- a/drivers/scsi/libsas/sas_expander.c
> +++ b/drivers/scsi/libsas/sas_expander.c
> @@ -2107,6 +2107,22 @@ 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_phy_match_dev_addr(dev, phy))
> + 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);
--
Damien Le Moal
Western Digital Research
