diff options
| -rw-r--r-- | arch/x86/pci/xen.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c index 56ab74989cf1..94e76620460f 100644 --- a/arch/x86/pci/xen.c +++ b/arch/x86/pci/xen.c @@ -162,6 +162,9 @@ static int xen_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) struct msi_desc *msidesc; int *v; + if (type == PCI_CAP_ID_MSI && nvec > 1) + return 1; + v = kzalloc(sizeof(int) * max(1, nvec), GFP_KERNEL); if (!v) return -ENOMEM; @@ -220,6 +223,9 @@ static int xen_hvm_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) struct msi_desc *msidesc; struct msi_msg msg; + if (type == PCI_CAP_ID_MSI && nvec > 1) + return 1; + list_for_each_entry(msidesc, &dev->msi_list, list) { __read_msi_msg(msidesc, &msg); pirq = MSI_ADDR_EXT_DEST_ID(msg.address_hi) | @@ -263,6 +269,9 @@ static int xen_initdom_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) int ret = 0; struct msi_desc *msidesc; + if (type == PCI_CAP_ID_MSI && nvec > 1) + return 1; + list_for_each_entry(msidesc, &dev->msi_list, list) { struct physdev_map_pirq map_irq; domid_t domid; |