libata: use __scsi_format_command()

libata already uses an internal buffer, so we should be using
__scsi_format_command() here.
Tested-by: Robert Elliott <elliott@hp.com>
Reviewed-by: Robert Elliott <elliott@hp.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>

drivers/ata/libata-eh.c

@@ -2482,6 +2482,7 @@ static void ata_eh_link_report(struct ata_link *link)
 		struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
 		struct ata_taskfile *cmd = &qc->tf, *res = &qc->result_tf;
 		const u8 *cdb = qc->cdb;
+		size_t cdb_len = qc->dev->cdb_len;
 		char data_buf[20] = "";
 		char cdb_buf[70] = "";
 
@@ -2509,16 +2510,12 @@ static void ata_eh_link_report(struct ata_link *link)
 		}
 
 		if (ata_is_atapi(qc->tf.protocol)) {
-			if (qc->scsicmd)
-				scsi_print_command(qc->scsicmd);
-			else
-				snprintf(cdb_buf, sizeof(cdb_buf),
-				 "cdb %02x %02x %02x %02x %02x %02x %02x %02x  "
-				 "%02x %02x %02x %02x %02x %02x %02x %02x\n         ",
-				 cdb[0], cdb[1], cdb[2], cdb[3],
-				 cdb[4], cdb[5], cdb[6], cdb[7],
-				 cdb[8], cdb[9], cdb[10], cdb[11],
-				 cdb[12], cdb[13], cdb[14], cdb[15]);
+			if (qc->scsicmd) {
+				cdb = qc->scsicmd->cmnd;
+				cdb_len = qc->scsicmd->cmd_len;
+			}
+			__scsi_format_command(cdb_buf, sizeof(cdb_buf),
+					      cdb, cdb_len);
 		} else {
 			const char *descr = ata_get_cmd_descript(cmd->command);
 			if (descr)