Commit e2169a32 authored by Jag Raman's avatar Jag Raman Committed by David S. Miller
Browse files

sparc64: refactor code to obtain cfg_handle property from MDESC 



Refactors code to get the cfg_handle property of a node from Machine
Description (MDESC)

Signed-off-by: default avatarJagannathan Raman <jag.raman@oracle.com>
Reviewed-by: default avatarLiam Merwick <liam.merwick@oracle.com>
Reviewed-by: default avatarShannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 06f3c3ac

arch/sparc/kernel/vio.c

+19 −11
Original line number Diff line number Diff line
@@ -181,6 +181,24 @@ static struct device_node *cdev_node; 
static struct vio_dev *root_vdev;

static u64 cdev_cfg_handle;



static const u64 *vio_cfg_handle(struct mdesc_handle *hp, u64 node)

{

	const u64 *cfg_handle = NULL;

	u64 a;



	mdesc_for_each_arc(a, hp, node, MDESC_ARC_TYPE_BACK) {

		u64 target;



		target = mdesc_arc_target(hp, a);

		cfg_handle = mdesc_get_property(hp, target,

						"cfg-handle", NULL);

		if (cfg_handle)

			break;

	}



	return cfg_handle;

}



static void vio_fill_channel_info(struct mdesc_handle *hp, u64 mp,

				  struct vio_dev *vdev)

{
@@ -227,7 +245,6 @@ static struct vio_dev *vio_create_one(struct mdesc_handle *hp, u64 mp, 
	struct vio_dev *vdev;

	int err, tlen, clen;

	const u64 *id, *cfg_handle;

	u64 a;



	type = mdesc_get_property(hp, mp, "device-type", &tlen);

	if (!type) {
@@ -245,16 +262,7 @@ static struct vio_dev *vio_create_one(struct mdesc_handle *hp, u64 mp, 


	id = mdesc_get_property(hp, mp, "id", NULL);



	cfg_handle = NULL;

	mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_BACK) {

		u64 target;



		target = mdesc_arc_target(hp, a);

		cfg_handle = mdesc_get_property(hp, target,

						"cfg-handle", NULL);

		if (cfg_handle)

			break;

	}

	cfg_handle = vio_cfg_handle(hp, mp);



	bus_id_name = type;

	if (!strcmp(type, "domain-services-port"))