Revert "scsi: ufs: add queries retry mechanism"

This reverts commit 61e07359.

The patch introduced redundant query retries as we already had such
mechanism provided with _retry functions.  Both ufshcd_read_desc and
ufshcd_read_unit_desc_param functions call ufshcd_query_descriptor_retry
wrapper.
Signed-off-by: Szymon Mielczarek <szymonx.mielczarek@intel.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/ufs/ufshcd.c

@@ -3032,18 +3032,7 @@ static inline int ufshcd_read_power_desc(struct ufs_hba *hba,
 					 u8 *buf,
 					 u32 size)
 {
-	int err = 0;
-	int retries;
-
-	for (retries = QUERY_REQ_RETRIES; retries > 0; retries--) {
-		/* Read descriptor*/
-		err = ufshcd_read_desc(hba, QUERY_DESC_IDN_POWER, 0, buf, size);
-		if (!err)
-			break;
-		dev_dbg(hba->dev, "%s: error %d retrying\n", __func__, err);
-	}
-
-	return err;
+	return ufshcd_read_desc(hba, QUERY_DESC_IDN_POWER, 0, buf, size);
 }
 
 static int ufshcd_read_device_desc(struct ufs_hba *hba, u8 *buf, u32 size)
@@ -4201,24 +4190,16 @@ static void ufshcd_set_queue_depth(struct scsi_device *sdev)
 {
 	int ret = 0;
 	u8 lun_qdepth;
-	int retries;
 	struct ufs_hba *hba;
 
 	hba = shost_priv(sdev->host);
 
 	lun_qdepth = hba->nutrs;
-	for (retries = QUERY_REQ_RETRIES; retries > 0; retries--) {
-		/* Read descriptor*/
-		ret = ufshcd_read_unit_desc_param(hba,
-				  ufshcd_scsi_to_upiu_lun(sdev->lun),
-				  UNIT_DESC_PARAM_LU_Q_DEPTH,
-				  &lun_qdepth,
-				  sizeof(lun_qdepth));
-		if (!ret || ret == -ENOTSUPP)
-			break;
-
-		dev_dbg(hba->dev, "%s: error %d retrying\n", __func__, ret);
-	}
+	ret = ufshcd_read_unit_desc_param(hba,
+					  ufshcd_scsi_to_upiu_lun(sdev->lun),
+					  UNIT_DESC_PARAM_LU_Q_DEPTH,
+					  &lun_qdepth,
+					  sizeof(lun_qdepth));
 
 	/* Some WLUN doesn't support unit descriptor */
 	if (ret == -EOPNOTSUPP)
@@ -5891,24 +5872,6 @@ static u32 ufshcd_find_max_sup_active_icc_level(struct ufs_hba *hba,
 	return icc_level;
 }
 
-static int ufshcd_set_icc_levels_attr(struct ufs_hba *hba, u32 icc_level)
-{
-	int ret = 0;
-	int retries;
-
-	for (retries = QUERY_REQ_RETRIES; retries > 0; retries--) {
-		/* write attribute */
-		ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_WRITE_ATTR,
-			QUERY_ATTR_IDN_ACTIVE_ICC_LVL, 0, 0, &icc_level);
-		if (!ret)
-			break;
-
-		dev_dbg(hba->dev, "%s: failed with error %d\n", __func__, ret);
-	}
-
-	return ret;
-}
-
 static void ufshcd_init_icc_levels(struct ufs_hba *hba)
 {
 	int ret;
@@ -5929,8 +5892,9 @@ static void ufshcd_init_icc_levels(struct ufs_hba *hba)
 	dev_dbg(hba->dev, "%s: setting icc_level 0x%x",
 			__func__, hba->init_prefetch_data.icc_level);
 
-	ret = ufshcd_set_icc_levels_attr(hba,
-				 hba->init_prefetch_data.icc_level);
+	ret = ufshcd_query_attr_retry(hba, UPIU_QUERY_OPCODE_WRITE_ATTR,
+		QUERY_ATTR_IDN_ACTIVE_ICC_LVL, 0, 0,
+		&hba->init_prefetch_data.icc_level);
 
 	if (ret)
 		dev_err(hba->dev,