diff --git a/drivers/ide/serverworks.c b/drivers/ide/serverworks.c
index a56bc51..35fb8da 100644
--- a/drivers/ide/serverworks.c
+++ b/drivers/ide/serverworks.c
@@ -128,14 +128,14 @@
 	}
 }
 
-static void svwks_set_dma_mode(ide_drive_t *drive, const u8 speed)
+static void svwks_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
 	static const u8 udma_modes[]		= { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05 };
 	static const u8 dma_modes[]		= { 0x77, 0x21, 0x20 };
 	static const u8 drive_pci2[]		= { 0x45, 0x44, 0x47, 0x46 };
 
-	ide_hwif_t *hwif	= drive->hwif;
 	struct pci_dev *dev	= to_pci_dev(hwif->dev);
+	const u8 speed		= drive->dma_mode;
 	u8 unit			= drive->dn & 1;
 
 	u8 ultra_enable	 = 0, ultra_timing = 0, dma_timing = 0;