Index: uspace/drv/block/ahci/ahci.c
===================================================================
--- uspace/drv/block/ahci/ahci.c	(revision 749fe15b74e83e98f982655fff497a808f7675f4)
+++ uspace/drv/block/ahci/ahci.c	(revision f9b2cb4cf365498e1fe141b1aa66950fbc3dcb17)
@@ -1140,5 +1140,5 @@
 	
 	/* Connect to parent device */
-	ahci->parent_sess = ddf_dev_parent_sess_create(dev, EXCHANGE_SERIALIZE);
+	ahci->parent_sess = ddf_dev_parent_sess_create(dev);
 	if (ahci->parent_sess == NULL)
 		return NULL;
Index: uspace/drv/block/ata_bd/main.c
===================================================================
--- uspace/drv/block/ata_bd/main.c	(revision 749fe15b74e83e98f982655fff497a808f7675f4)
+++ uspace/drv/block/ata_bd/main.c	(revision f9b2cb4cf365498e1fe141b1aa66950fbc3dcb17)
@@ -68,6 +68,5 @@
 	int rc;
 
-	parent_sess = ddf_dev_parent_sess_create(dev,
-	    EXCHANGE_SERIALIZE);
+	parent_sess = ddf_dev_parent_sess_create(dev);
 	if (parent_sess == NULL)
 		return ENOMEM;
Index: uspace/drv/block/ddisk/ddisk.c
===================================================================
--- uspace/drv/block/ddisk/ddisk.c	(revision 749fe15b74e83e98f982655fff497a808f7675f4)
+++ uspace/drv/block/ddisk/ddisk.c	(revision f9b2cb4cf365498e1fe141b1aa66950fbc3dcb17)
@@ -286,5 +286,5 @@
 	int rc;
 
-	parent_sess = ddf_dev_parent_sess_create(dev, EXCHANGE_SERIALIZE);
+	parent_sess = ddf_dev_parent_sess_create(dev);
 	if (parent_sess == NULL)
 		return ENOMEM;