scsi: ufs: Move the ufs_is_valid_unit_desc_lun() definition

Move the definition of this function from a public into a private header
file since it is only used inside the UFS core.

Link: https://lore.kernel.org/r/20220419225811.4127248-29-bvanassche@acm.orgTested-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/ufs/ufs.h

@@ -620,23 +620,4 @@ enum ufs_trace_tsf_t {
 	UFS_TSF_CDB, UFS_TSF_OSF, UFS_TSF_TM_INPUT, UFS_TSF_TM_OUTPUT
 };
 
-/**
- * ufs_is_valid_unit_desc_lun - checks if the given LUN has a unit descriptor
- * @dev_info: pointer of instance of struct ufs_dev_info
- * @lun: LU number to check
- * @return: true if the lun has a matching unit descriptor, false otherwise
- */
-static inline bool ufs_is_valid_unit_desc_lun(struct ufs_dev_info *dev_info,
-		u8 lun, u8 param_offset)
-{
-	if (!dev_info || !dev_info->max_lu_supported) {
-		pr_err("Max General LU supported by UFS isn't initialized\n");
-		return false;
-	}
-	/* WB is available only for the logical unit from 0 to 7 */
-	if (param_offset == UNIT_DESC_PARAM_WB_BUF_ALLOC_UNITS)
-		return lun < UFS_UPIU_MAX_WB_LUN_ID;
-	return lun == UFS_UPIU_RPMB_WLUN || (lun < dev_info->max_lu_supported);
-}
-
 #endif /* End of Header */

drivers/scsi/ufs/ufshcd-priv.h

@@ -276,4 +276,23 @@ static inline int ufshcd_rpm_put(struct ufs_hba *hba)
 	return pm_runtime_put(&hba->ufs_device_wlun->sdev_gendev);
 }
 
+/**
+ * ufs_is_valid_unit_desc_lun - checks if the given LUN has a unit descriptor
+ * @dev_info: pointer of instance of struct ufs_dev_info
+ * @lun: LU number to check
+ * @return: true if the lun has a matching unit descriptor, false otherwise
+ */
+static inline bool ufs_is_valid_unit_desc_lun(struct ufs_dev_info *dev_info,
+		u8 lun, u8 param_offset)
+{
+	if (!dev_info || !dev_info->max_lu_supported) {
+		pr_err("Max General LU supported by UFS isn't initialized\n");
+		return false;
+	}
+	/* WB is available only for the logical unit from 0 to 7 */
+	if (param_offset == UNIT_DESC_PARAM_WB_BUF_ALLOC_UNITS)
+		return lun < UFS_UPIU_MAX_WB_LUN_ID;
+	return lun == UFS_UPIU_RPMB_WLUN || (lun < dev_info->max_lu_supported);
+}
+
 #endif /* _UFSHCD_PRIV_H_ */