diff --git a/drivers/ide/ide-io-std.c b/drivers/ide/ide-io-std.c
index 2d9c6dc..3a867e4 100644
--- a/drivers/ide/ide-io-std.c
+++ b/drivers/ide/ide-io-std.c
@@ -166,7 +166,7 @@
 	}
 
 	/* be sure we're looking at the low order bits */
-	tf_outb(ATA_DEVCTL_OBS & ~0x80, io_ports->ctl_addr);
+	tf_outb(ATA_DEVCTL_OBS, io_ports->ctl_addr);
 
 	if (cmd->tf_flags & IDE_TFLAG_IN_FEATURE)
 		tf->feature = tf_inb(io_ports->feature_addr);
@@ -182,7 +182,7 @@
 		tf->device = tf_inb(io_ports->device_addr);
 
 	if (cmd->tf_flags & IDE_TFLAG_LBA48) {
-		tf_outb(ATA_DEVCTL_OBS | 0x80, io_ports->ctl_addr);
+		tf_outb(ATA_HOB | ATA_DEVCTL_OBS, io_ports->ctl_addr);
 
 		if (cmd->tf_flags & IDE_TFLAG_IN_HOB_FEATURE)
 			tf->hob_feature = tf_inb(io_ports->feature_addr);