[PATCH] ahci: readability tweak

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/ata/ahci.c

@@ -1041,7 +1041,7 @@ static void ahci_host_intr(struct ata_port *ap)
 	/* hmmm... a spurious interupt */
 
 	/* some devices send D2H reg with I bit set during NCQ command phase */
-	if (ap->sactive && status & PORT_IRQ_D2H_REG_FIS)
+	if (ap->sactive && (status & PORT_IRQ_D2H_REG_FIS))
 		return;
 
 	/* ignore interim PIO setup fis interrupts */