diff --git a/drivers/ide/ide-lib.c b/drivers/ide/ide-lib.c
index c859de7..46443f1 100644
--- a/drivers/ide/ide-lib.c
+++ b/drivers/ide/ide-lib.c
@@ -288,9 +288,10 @@
 void ide_set_pio(ide_drive_t *drive, u8 req_pio)
 {
 	ide_hwif_t *hwif = drive->hwif;
+	const struct ide_port_ops *port_ops = hwif->port_ops;
 	u8 host_pio, pio;
 
-	if (hwif->set_pio_mode == NULL ||
+	if (port_ops == NULL || port_ops->set_pio_mode == NULL ||
 	    (hwif->host_flags & IDE_HFLAG_NO_SET_MODE))
 		return;
 
@@ -343,29 +344,30 @@
 int ide_set_pio_mode(ide_drive_t *drive, const u8 mode)
 {
 	ide_hwif_t *hwif = drive->hwif;
+	const struct ide_port_ops *port_ops = hwif->port_ops;
 
 	if (hwif->host_flags & IDE_HFLAG_NO_SET_MODE)
 		return 0;
 
-	if (hwif->set_pio_mode == NULL)
+	if (port_ops == NULL || port_ops->set_pio_mode == NULL)
 		return -1;
 
 	/*
 	 * TODO: temporary hack for some legacy host drivers that didn't
 	 * set transfer mode on the device in ->set_pio_mode method...
 	 */
-	if (hwif->set_dma_mode == NULL) {
-		hwif->set_pio_mode(drive, mode - XFER_PIO_0);
+	if (port_ops->set_dma_mode == NULL) {
+		port_ops->set_pio_mode(drive, mode - XFER_PIO_0);
 		return 0;
 	}
 
 	if (hwif->host_flags & IDE_HFLAG_POST_SET_MODE) {
 		if (ide_config_drive_speed(drive, mode))
 			return -1;
-		hwif->set_pio_mode(drive, mode - XFER_PIO_0);
+		port_ops->set_pio_mode(drive, mode - XFER_PIO_0);
 		return 0;
 	} else {
-		hwif->set_pio_mode(drive, mode - XFER_PIO_0);
+		port_ops->set_pio_mode(drive, mode - XFER_PIO_0);
 		return ide_config_drive_speed(drive, mode);
 	}
 }
@@ -373,20 +375,21 @@
 int ide_set_dma_mode(ide_drive_t *drive, const u8 mode)
 {
 	ide_hwif_t *hwif = drive->hwif;
+	const struct ide_port_ops *port_ops = hwif->port_ops;
 
 	if (hwif->host_flags & IDE_HFLAG_NO_SET_MODE)
 		return 0;
 
-	if (hwif->set_dma_mode == NULL)
+	if (port_ops == NULL || port_ops->set_dma_mode == NULL)
 		return -1;
 
 	if (hwif->host_flags & IDE_HFLAG_POST_SET_MODE) {
 		if (ide_config_drive_speed(drive, mode))
 			return -1;
-		hwif->set_dma_mode(drive, mode);
+		port_ops->set_dma_mode(drive, mode);
 		return 0;
 	} else {
-		hwif->set_dma_mode(drive, mode);
+		port_ops->set_dma_mode(drive, mode);
 		return ide_config_drive_speed(drive, mode);
 	}
 }
@@ -406,8 +409,9 @@
 int ide_set_xfer_rate(ide_drive_t *drive, u8 rate)
 {
 	ide_hwif_t *hwif = drive->hwif;
+	const struct ide_port_ops *port_ops = hwif->port_ops;
 
-	if (hwif->set_dma_mode == NULL ||
+	if (port_ops == NULL || port_ops->set_dma_mode == NULL ||
 	    (hwif->host_flags & IDE_HFLAG_NO_SET_MODE))
 		return -1;