diff --git a/drivers/ata/acard-ahci.c b/drivers/ata/acard-ahci.c
index 46dc54d18f0b7ca13a542cef88fb798c4b1023b1..2a04e8abd3977ddbd677bbcd172e9311a8759dc2 100644
--- a/drivers/ata/acard-ahci.c
+++ b/drivers/ata/acard-ahci.c
@@ -218,7 +218,6 @@ static enum ata_completion_errors acard_ahci_qc_prep(struct ata_queued_cmd *qc)
 	void *cmd_tbl;
 	u32 opts;
 	const u32 cmd_fis_len = 5; /* five dwords */
-	unsigned int n_elem;
 
 	/*
 	 * Fill in command table information.  First, the header,
@@ -232,9 +231,8 @@ static enum ata_completion_errors acard_ahci_qc_prep(struct ata_queued_cmd *qc)
 		memcpy(cmd_tbl + AHCI_CMD_TBL_CDB, qc->cdb, qc->dev->cdb_len);
 	}
 
-	n_elem = 0;
 	if (qc->flags & ATA_QCFLAG_DMAMAP)
-		n_elem = acard_ahci_fill_sg(qc, cmd_tbl);
+		acard_ahci_fill_sg(qc, cmd_tbl);
 
 	/*
 	 * Fill in command slot information.