diff options
Diffstat (limited to 'unmodified_drivers')
| -rw-r--r-- | unmodified_drivers/linux-2.6/platform-pci/platform-pci.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/unmodified_drivers/linux-2.6/platform-pci/platform-pci.c b/unmodified_drivers/linux-2.6/platform-pci/platform-pci.c index 3a2453a25c..b529ce1308 100644 --- a/unmodified_drivers/linux-2.6/platform-pci/platform-pci.c +++ b/unmodified_drivers/linux-2.6/platform-pci/platform-pci.c @@ -182,12 +182,17 @@ static int get_hypercall_stubs(void) static int get_callback_irq(struct pci_dev *pdev) { #ifdef __ia64__ - int irq; + int irq, rid; for (irq = 0; irq < 16; irq++) { if (isa_irq_to_vector(irq) == pdev->irq) return irq; } - return 0; + /* use Requester-ID as callback_irq */ + /* RID: '<#bus(8)><#dev(5)><#func(3)>' (cf. PCI-Express spec) */ + rid = ((pdev->bus->number & 0xff) << 8) | pdev->devfn; + printk(KERN_INFO DRV_NAME ":use Requester-ID(%04x) as callback irq\n", + rid); + return rid | HVM_PARAM_CALLBACK_IRQ_RID; #else /* !__ia64__ */ return pdev->irq; #endif |