Commit bcf21e3a authored Aug 22, 2017 by Michael Ellerman

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>

parent 15c659ff

arch/powerpc/platforms/pseries/vio.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -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",