diff --git a/[refs] b/[refs]
index eee46ffa4a06..e37b4185b427 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 8d64fcd9357798ad0d61f8877de13d5e1b1ab510
+refs/heads/master: c4199930b119eb9c1ffb102ed57eaac4d4424d08
diff --git a/trunk/drivers/ide/ide-iops.c b/trunk/drivers/ide/ide-iops.c
index 5403e4a44be4..0e62698146b6 100644
--- a/trunk/drivers/ide/ide-iops.c
+++ b/trunk/drivers/ide/ide-iops.c
@@ -386,9 +386,11 @@ int ide_config_drive_speed(ide_drive_t *drive, u8 speed)
 		return error;
 	}
 
-	id[ATA_ID_UDMA_MODES]  &= ~0xFF00;
-	id[ATA_ID_MWDMA_MODES] &= ~0x0F00;
-	id[ATA_ID_SWDMA_MODES] &= ~0x0F00;
+	if (speed >= XFER_SW_DMA_0) {
+		id[ATA_ID_UDMA_MODES]  &= ~0xFF00;
+		id[ATA_ID_MWDMA_MODES] &= ~0x0700;
+		id[ATA_ID_SWDMA_MODES] &= ~0x0700;
+	}
 
  skip:
 #ifdef CONFIG_BLK_DEV_IDEDMA