diff --git a/drivers/ide/dtc2278.c b/drivers/ide/dtc2278.c
index 689b2e4..c6b1381 100644
--- a/drivers/ide/dtc2278.c
+++ b/drivers/ide/dtc2278.c
@@ -100,7 +100,8 @@
 				  IDE_HFLAG_IO_32BIT |
 				  /* disallow ->io_32bit changes */
 				  IDE_HFLAG_NO_IO_32BIT |
-				  IDE_HFLAG_NO_DMA,
+				  IDE_HFLAG_NO_DMA |
+				  IDE_HFLAG_DTC2278,
 	.pio_mask		= ATA_PIO4,
 };