diff --git a/drivers/ide/siimage.c b/drivers/ide/siimage.c
index 2009ac2..ddeda44 100644
--- a/drivers/ide/siimage.c
+++ b/drivers/ide/siimage.c
@@ -258,7 +258,7 @@
 
 	/* trim *taskfile* PIO to the slowest of the master/slave */
 	if (pair) {
-		u8 pair_pio = ide_get_best_pio_mode(pair, 255, 4);
+		u8 pair_pio = pair->pio_mode - XFER_PIO_0;
 
 		if (pair_pio < tf_pio)
 			tf_pio = pair_pio;