diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 3c1f883..bf327d4 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -826,7 +826,7 @@
 /**
  *	ata_id_to_dma_mode	-	Identify DMA mode from id block
  *	@dev: device to identify
- *	@mode: mode to assume if we cannot tell
+ *	@unknown: mode to assume if we cannot tell
  *
  *	Set up the timing values for the device based upon the identify
  *	reported values for the DMA mode. This function is used by drivers