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Commit 4b41df7f authored by Ian Campbell's avatar Ian Campbell Committed by Konrad Rzeszutek Wilk
Browse files

xen: events: return irq from xen_allocate_pirq_msi 



consistent with other similar functions.

Signed-off-by: default avatarIan Campbell <ian.campbell@citrix.com>
Signed-off-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
parent bb5d079a

arch/x86/pci/xen.c

+6 −6
Original line number Diff line number Diff line
@@ -100,8 +100,8 @@ static int xen_hvm_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) 
		pirq = MSI_ADDR_EXT_DEST_ID(msg.address_hi) |

			((msg.address_lo >> MSI_ADDR_DEST_ID_SHIFT) & 0xff);

		if (xen_irq_from_pirq(pirq) >= 0 && msg.data == XEN_PIRQ_MSI_DATA) {

			xen_allocate_pirq_msi((type == PCI_CAP_ID_MSIX) ?

					"msi-x" : "msi", &irq, &pirq, 0);

			irq = xen_allocate_pirq_msi((type == PCI_CAP_ID_MSIX) ?

						    "msi-x" : "msi", &pirq, 0);

			if (irq < 0)

				goto error;

			ret = set_irq_msi(irq, msidesc);
@@ -111,8 +111,8 @@ static int xen_hvm_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) 
					" pirq=%d\n", irq, pirq);

			return 0;

		}

		xen_allocate_pirq_msi((type == PCI_CAP_ID_MSIX) ?

				"msi-x" : "msi", &irq, &pirq, 1);

		irq = xen_allocate_pirq_msi((type == PCI_CAP_ID_MSIX) ?

					    "msi-x" : "msi", &pirq, 1);

		if (irq < 0 || pirq < 0)

			goto error;

		printk(KERN_DEBUG "xen: msi --> irq=%d, pirq=%d\n", irq, pirq);
@@ -157,10 +157,10 @@ static int xen_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) 
		goto error;

	i = 0;

	list_for_each_entry(msidesc, &dev->msi_list, list) {

		xen_allocate_pirq_msi(

		irq = xen_allocate_pirq_msi(

			(type == PCI_CAP_ID_MSIX) ?

			"pcifront-msi-x" : "pcifront-msi",

			&irq, &v[i], 0);

			&v[i], 0);

		if (irq < 0) {

			ret = -1;

			goto free;

drivers/xen/events.c

+11 −8
Original line number Diff line number Diff line
@@ -664,31 +664,34 @@ static int find_unbound_pirq(int type) 
	return -1;

}



void xen_allocate_pirq_msi(char *name, int *irq, int *pirq, int alloc_pirq)

int xen_allocate_pirq_msi(char *name, int *pirq, int alloc_pirq)

{

	int irq;



	spin_lock(&irq_mapping_update_lock);



	*irq = xen_allocate_irq_dynamic();

	if (*irq == -1)

	irq = xen_allocate_irq_dynamic();

	if (irq == -1)

		goto out;



	if (alloc_pirq) {

		*pirq = find_unbound_pirq(MAP_PIRQ_TYPE_MSI);

		if (*pirq == -1) {

			xen_free_irq(*irq);

			*irq = -1;

			xen_free_irq(irq);

			irq = -1;

			goto out;

		}

	}



	set_irq_chip_and_handler_name(*irq, &xen_pirq_chip,

	set_irq_chip_and_handler_name(irq, &xen_pirq_chip,

				      handle_level_irq, name);



	irq_info[*irq] = mk_pirq_info(0, *pirq, 0, 0);

	pirq_to_irq[*pirq] = *irq;

	irq_info[irq] = mk_pirq_info(0, *pirq, 0, 0);

	pirq_to_irq[*pirq] = irq;



out:

	spin_unlock(&irq_mapping_update_lock);

	return irq;

}



int xen_create_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc, int type)

include/xen/events.h

+1 −1
Original line number Diff line number Diff line
@@ -75,7 +75,7 @@ int xen_allocate_pirq(unsigned gsi, int shareable, char *name); 
int xen_map_pirq_gsi(unsigned pirq, unsigned gsi, int shareable, char *name);



#ifdef CONFIG_PCI_MSI

void xen_allocate_pirq_msi(char *name, int *irq, int *pirq, int alloc_pirq);

int xen_allocate_pirq_msi(char *name, int *pirq, int alloc_pirq);

int xen_create_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc, int type);

#endif