ufshcd_read_string_desc
ret = ufshcd_read_string_desc(hba, index, &desc_buf, \
int ufshcd_read_string_desc(struct ufs_hba *hba, u8 desc_index, u8 **buf, enum ufs_descr_fmt fmt);
ret = ufshcd_read_string_desc(hba, serial_index, &serial_number, SD_RAW);
err = ufshcd_read_string_desc(hba, model_index,