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powerpc/vio: Use device_type to detect family 

Currently in the vio.c code we use a comparision against the parent
device node's full path to decide if the device is a PFO or VIO family
device.

Both the ibm,platform-facilities and vdevice nodes are defined by PAPR,
and must have a matching device_type. So instead of using the path we
can instead compare the device_type.

I've checked Qemu and kvmtool both do this correctly, and all the
PowerVM systems I have access to do also. So it seems to be safe.

This removes the dependency on full_name, which is being removed
upstream.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Michael Ellerman 2017-08-22 15:14:50 +10:00
parent 15c659ff9d
commit bcf21e3a97
1 changed files with 2 additions and 2 deletions
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4
arch/powerpc/platforms/pseries/vio.c
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@ -1357,9 +1357,9 @@ struct vio_dev *vio_register_device_node(struct device_node *of_node)
*/
parent_node = of_get_parent(of_node);
if (parent_node) {
if (!strcmp(parent_node->full_name, "/ibm,platform-facilities"))
if (!strcmp(parent_node->type, "ibm,platform-facilities"))
family = PFO;
else if (!strcmp(parent_node->full_name, "/vdevice"))
else if (!strcmp(parent_node->type, "vdevice"))
family = VDEVICE;
else {
pr_warn("%s: parent(%s) of %s not recognized.\n",