[PATCH 1/2] scsi: ufs: Introduce a vops to get info of command completion

[Can Guo <cang@codeaurora.org>]

Similar with the vops setup_xfer_req in ufshcd_send_command(), this change
adds the vops compl_xfer_req in __ufshcd_transfer_req_compl() such that
vendor drivers can make use of the two hooks to do variant stuffs.

Signed-off-by: Kiwoong Kim <kwmad.kim@samsung.com>
Signed-off-by: Can Guo <cang@codeaurora.org>

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index e221add..7ca7564 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -5016,6 +5016,7 @@ static void __ufshcd_transfer_req_compl(struct ufs_hba *hba,
 		lrbp->in_use = false;
 		lrbp->compl_time_stamp = ktime_get();
 		cmd = lrbp->cmd;
+		ufshcd_vops_compl_xfer_req(hba, index, (cmd) ? true : false);
 		if (cmd) {
 			ufshcd_add_command_trace(hba, index, "complete");
 			result = ufshcd_transfer_rsp_status(hba, lrbp);
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 9bb5f0e..e3fb62f 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -310,7 +310,7 @@ struct ufs_pwr_mode_info {
  *			is carried out to allow vendor spesific capabilities
  *			to be set.
  * @setup_xfer_req: called before any transfer request is issued
- *                  to set some things
+ * @compl_xfer_req: called when any transfer request is completed
  * @setup_task_mgmt: called before any task management request is issued
  *                  to set some things
  * @hibern8_notify: called around hibern8 enter/exit
@@ -341,6 +341,7 @@ struct ufs_hba_variant_ops {
 					struct ufs_pa_layer_attr *,
 					struct ufs_pa_layer_attr *);
 	void	(*setup_xfer_req)(struct ufs_hba *, int, bool);
+	void	(*compl_xfer_req)(struct ufs_hba *hba, int tag, bool is_scsi);
 	void	(*setup_task_mgmt)(struct ufs_hba *, int, u8);
 	void    (*hibern8_notify)(struct ufs_hba *, enum uic_cmd_dme,
 					enum ufs_notify_change_status);
@@ -1166,6 +1167,13 @@ static inline void ufshcd_vops_setup_xfer_req(struct ufs_hba *hba, int tag,
 		return hba->vops->setup_xfer_req(hba, tag, is_scsi_cmd);
 }
 
+static inline void ufshcd_vops_compl_xfer_req(struct ufs_hba *hba,
+					      int tag, bool is_scsi)
+{
+	if (hba->vops && hba->vops->compl_xfer_req)
+		hba->vops->compl_xfer_req(hba, tag, is_scsi);
+}
+
 static inline void ufshcd_vops_setup_task_mgmt(struct ufs_hba *hba,
 					int tag, u8 tm_function)
 {
-- 
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