diff options
| author | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2011-03-10 19:41:43 (GMT) |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2011-03-10 19:41:43 (GMT) |
| commit | 8054c3634cb3cb9d426c8ade934389213b857858 (patch) | |
| tree | 30d4de58cdd6be0924bd96dde2de2a826bf27099 /arch/x86/pci/xen.c | |
| parent | f5412be599602124d2bdd49947b231dd77c0bf99 (diff) | |
| parent | 1aa0b51a033d4a1ec6d29d06487e053398afa21b (diff) | |
| download | linux-8054c3634cb3cb9d426c8ade934389213b857858.tar.xz | |
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/xen.c')
| -rw-r--r-- | arch/x86/pci/xen.c | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c index 25cd4a0..2a12f3d 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; } |