diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 97df4807a088..2ff633c119e2 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4557,6 +4557,7 @@ void swap_buf_le16(u16 *buf, unsigned int buf_words)
 /**
  *	ata_qc_new_init - Request an available ATA command, and initialize it
  *	@dev: Device from whom we request an available command structure
+ *	@tag: command tag
  *
  *	LOCKING:
  *	None.