Commit b294809d authored Sep 16, 2016 by Vitaly Kuznetsov Committed by Greg Kroah-Hartman Sep 27, 2016

Drivers: hv: make VMBus bus ids persistent



Some tools use bus ids to identify devices and they count on the fact
that these ids are persistent across reboot. This may be not true for
VMBus as we use auto incremented counter from alloc_channel() as such
id. Switch to using if_instance from channel offer, this id is supposed
to be persistent.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 2d8784df

drivers/hv/vmbus_drv.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -961,8 +961,8 @@ int vmbus_device_register(struct hv_device *child_device_obj)
		{
		int ret = 0;

		dev_set_name(&child_device_obj->device, "vmbus_%d",
		child_device_obj->channel->id);
		dev_set_name(&child_device_obj->device, "vmbus-%pUl",
		child_device_obj->channel->offermsg.offer.if_instance.b);

		child_device_obj->device.bus = &hv_bus;
		child_device_obj->device.parent = &hv_acpi_dev->dev;

Admin message