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authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2011-03-10 14:41:43 -0500
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2011-03-10 14:41:43 -0500
commit8054c3634cb3cb9d426c8ade934389213b857858 (patch)
tree30d4de58cdd6be0924bd96dde2de2a826bf27099 /arch/x86/pci
parentf5412be599602124d2bdd49947b231dd77c0bf99 (diff)
parent1aa0b51a033d4a1ec6d29d06487e053398afa21b (diff)
Merge branch 'stable/irq.rework' into stable/irq.cleanup
* stable/irq.rework: xen/irq: Cleanup up the pirq_to_irq for DomU PV PCI passthrough guests as well. xen: Use IRQF_FORCE_RESUME xen/timer: Missing IRQF_NO_SUSPEND in timer code broke suspend. xen: Fix compile error introduced by "switch to new irq_chip functions" xen: Switch to new irq_chip functions xen: Remove stale irq_chip.end xen: events: do not free legacy IRQs xen: events: allocate GSIs and dynamic IRQs from separate IRQ ranges. xen: events: add xen_allocate_irq_{dynamic, gsi} and xen_free_irq xen:events: move find_unbound_irq inside CONFIG_PCI_MSI xen: handled remapped IRQs when enabling a pcifront PCI device. genirq: Add IRQF_FORCE_RESUME
Diffstat (limited to 'arch/x86/pci')
-rw-r--r--arch/x86/pci/xen.c22
1 files changed, 14 insertions, 8 deletions
diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c
index 25cd4a07d09..2a12f3dbdd0 100644
--- a/arch/x86/pci/xen.c
+++ b/arch/x86/pci/xen.c
@@ -226,21 +226,27 @@ static int xen_pcifront_enable_irq(struct pci_dev *dev)
{
int rc;
int share = 1;
+ u8 gsi;
- dev_info(&dev->dev, "Xen PCI enabling IRQ: %d\n", dev->irq);
-
- if (dev->irq < 0)
- return -EINVAL;
+ rc = pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &gsi);
+ if (rc < 0) {
+ dev_warn(&dev->dev, "Xen PCI: failed to read interrupt line: %d\n",
+ rc);
+ return rc;
+ }
- if (dev->irq < NR_IRQS_LEGACY)
+ if (gsi < NR_IRQS_LEGACY)
share = 0;
- rc = xen_allocate_pirq(dev->irq, share, "pcifront");
+ rc = xen_allocate_pirq(gsi, share, "pcifront");
if (rc < 0) {
- dev_warn(&dev->dev, "Xen PCI IRQ: %d, failed to register:%d\n",
- dev->irq, rc);
+ dev_warn(&dev->dev, "Xen PCI: failed to register GSI%d: %d\n",
+ gsi, rc);
return rc;
}
+
+ dev->irq = rc;
+ dev_info(&dev->dev, "Xen PCI mapped GSI%d to IRQ%d\n", gsi, dev->irq);
return 0;
}