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Commit 5dcda98a authored by Bjorn Helgaas's avatar Bjorn Helgaas
Browse files

Merge branch 'pci/host-hv' into next 

* pci/host-hv:
  PCI: hv: Use device serial number as PCI domain
  PCI: hv: Fix wslot_to_devfn() to fix warnings on device removal
parents d9520971 4a9b0933

drivers/pci/host/pci-hyperv.c

+17 −3
Original line number Diff line number Diff line
@@ -130,7 +130,8 @@ union pci_version { 
 */

union win_slot_encoding {

	struct {

		u32	func:8;

		u32	dev:5;

		u32	func:3;

		u32	reserved:24;

	} bits;

	u32 slot;
@@ -485,7 +486,8 @@ static u32 devfn_to_wslot(int devfn) 
	union win_slot_encoding wslot;



	wslot.slot = 0;

	wslot.bits.func = PCI_SLOT(devfn) | (PCI_FUNC(devfn) << 5);

	wslot.bits.dev = PCI_SLOT(devfn);

	wslot.bits.func = PCI_FUNC(devfn);



	return wslot.slot;

}
@@ -503,7 +505,7 @@ static int wslot_to_devfn(u32 wslot) 
	union win_slot_encoding slot_no;



	slot_no.slot = wslot;

	return PCI_DEVFN(0, slot_no.bits.func);

	return PCI_DEVFN(slot_no.bits.dev, slot_no.bits.func);

}



/*
@@ -1315,6 +1317,18 @@ static struct hv_pci_dev *new_pcichild_device(struct hv_pcibus_device *hbus, 
	get_pcichild(hpdev, hv_pcidev_ref_initial);

	get_pcichild(hpdev, hv_pcidev_ref_childlist);

	spin_lock_irqsave(&hbus->device_list_lock, flags);



	/*

	 * When a device is being added to the bus, we set the PCI domain

	 * number to be the device serial number, which is non-zero and

	 * unique on the same VM.  The serial numbers start with 1, and

	 * increase by 1 for each device.  So device names including this

	 * can have shorter names than based on the bus instance UUID.

	 * Only the first device serial number is used for domain, so the

	 * domain number will not change after the first device is added.

	 */

	if (list_empty(&hbus->children))

		hbus->sysdata.domain = desc->ser;

	list_add_tail(&hpdev->list_entry, &hbus->children);

	spin_unlock_irqrestore(&hbus->device_list_lock, flags);

	return hpdev;