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[SPARC64]: Improve VIO device naming further.

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The best scheme to get uniqueness seems to be:

FOO			-- If node lacks "id" property
FOO-$(ID)		-- If node has "id" but parent lacks "cfg-handle"
FOO-$(ID)-$(CFG_HANDLE) -- If node has both

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2007-07-19 22:51:07 -07:00
parent 3d6e470236
commit 58fb666643
1 changed files with 16 additions and 19 deletions
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35
arch/sparc64/kernel/vio.c
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@ -205,7 +205,8 @@ static struct vio_dev *vio_create_one(struct mdesc_handle *hp, u64 mp,
struct device_node *dp;
struct vio_dev *vdev;
int err, tlen, clen;
const u64 *id;
const u64 *id, *cfg_handle;
u64 a;
type = mdesc_get_property(hp, mp, "device-type", &tlen);
if (!type) {
@ -221,26 +222,18 @@ static struct vio_dev *vio_create_one(struct mdesc_handle *hp, u64 mp,
return NULL;
}
if (!strcmp(type, "vdc-port")) {
u64 a;
id = mdesc_get_property(hp, mp, "id", NULL);
id = NULL;
mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_BACK) {
u64 target;
cfg_handle = NULL;
mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_BACK) {
u64 target;
target = mdesc_arc_target(hp, a);
id = mdesc_get_property(hp, target,
target = mdesc_arc_target(hp, a);
cfg_handle = mdesc_get_property(hp, target,
"cfg-handle", NULL);
if (id)
break;
}
if (!id) {
printk(KERN_ERR "VIO: vdc-port lacks parent "
"cfg-handle.\n");
return NULL;
}
} else
id = mdesc_get_property(hp, mp, "id", NULL);
if (cfg_handle)
break;
}
bus_id_name = type;
if (!strcmp(type, "domain-services-port"))
@ -285,10 +278,14 @@ static struct vio_dev *vio_create_one(struct mdesc_handle *hp, u64 mp,
snprintf(vdev->dev.bus_id, BUS_ID_SIZE, "%s",
bus_id_name);
vdev->dev_no = ~(u64)0;
} else {
} else if (!cfg_handle) {
snprintf(vdev->dev.bus_id, BUS_ID_SIZE, "%s-%lu",
bus_id_name, *id);
vdev->dev_no = *id;
} else {
snprintf(vdev->dev.bus_id, BUS_ID_SIZE, "%s-%lu-%lu",
bus_id_name, *cfg_handle, *id);
vdev->dev_no = *cfg_handle;
}
vdev->dev.parent = parent;