>
> Some UFS host controller may need to synchronize dev command among UFS
> host controllers.
>
> Signed-off-by: Gyunghoon Kwon <goodjob.kwon@xxxxxxxxxxx>
You need to include at least one implementation of this vop,
Otherwise, its just a piece of dead code.
Thanks,
Avri
> ---
> drivers/ufs/core/ufshcd.c | 2 ++
> include/ufs/ufshcd.h | 10 ++++++++++
> 2 files changed, 12 insertions(+)
>
> diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index
> c7b337480e3e..fb642c5e73a3 100644
> --- a/drivers/ufs/core/ufshcd.c
> +++ b/drivers/ufs/core/ufshcd.c
> @@ -3021,8 +3021,10 @@ static int ufshcd_exec_dev_cmd(struct ufs_hba
> *hba,
>
> ufshcd_add_query_upiu_trace(hba, UFS_QUERY_SEND, lrbp-
> >ucd_req_ptr);
>
> + ufshcd_vops_dev_cmd_notify(hba, PRE_CHANGE);
> ufshcd_send_command(hba, tag);
> err = ufshcd_wait_for_dev_cmd(hba, lrbp, timeout);
> + ufshcd_vops_dev_cmd_notify(hba, POST_CHANGE);
> ufshcd_add_query_upiu_trace(hba, err ? UFS_QUERY_ERR :
> UFS_QUERY_COMP,
> (struct utp_upiu_req *)lrbp->ucd_rsp_ptr);
>
> diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h index
> a92271421718..376babf71432 100644
> --- a/include/ufs/ufshcd.h
> +++ b/include/ufs/ufshcd.h
> @@ -293,6 +293,7 @@ struct ufs_pwr_mode_info {
> * @config_scaling_param: called to configure clock scaling parameters
> * @program_key: program or evict an inline encryption key
> * @event_notify: called to notify important events
> + * @dev_cmd_notify: called to notify device management request is
> + issued
> */
> struct ufs_hba_variant_ops {
> const char *name;
> @@ -331,6 +332,8 @@ struct ufs_hba_variant_ops {
> const union ufs_crypto_cfg_entry *cfg, int slot);
> void (*event_notify)(struct ufs_hba *hba,
> enum ufs_event_type evt, void *data);
> + void (*dev_cmd_notify)(struct ufs_hba *hba,
> + enum ufs_notify_change_status);
> };
>
> /* clock gating state */
> @@ -1217,6 +1220,13 @@ static inline int
> ufshcd_vops_phy_initialization(struct ufs_hba *hba)
> return 0;
> }
>
> +static inline void ufshcd_vops_dev_cmd_notify(struct ufs_hba *hba,
> + enum ufs_notify_change_status
> +status) {
> + if (hba->vops && hba->vops->dev_cmd_notify)
> + hba->vops->dev_cmd_notify(hba, status); }
> +
> extern struct ufs_pm_lvl_states ufs_pm_lvl_states[];
>
> int ufshcd_dump_regs(struct ufs_hba *hba, size_t offset, size_t len,
> --
> 2.37.1
