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| author | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2011-03-10 20:41:43 +0100 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2011-03-10 20:41:43 +0100 |
| commit | 8054c3634cb3cb9d426c8ade934389213b857858 (patch) | |
| tree | 30d4de58cdd6be0924bd96dde2de2a826bf27099 /arch | |
| parent | Linux 2.6.38-rc6 (diff) | |
| parent | xen/irq: Cleanup up the pirq_to_irq for DomU PV PCI passthrough guests as well. (diff) | |
| download | linux-8054c3634cb3cb9d426c8ade934389213b857858.tar.xz linux-8054c3634cb3cb9d426c8ade934389213b857858.zip | |
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')
| -rw-r--r-- | arch/x86/pci/xen.c | 22 | ||||
| -rw-r--r-- | arch/x86/xen/time.c | 4 |
2 files changed, 17 insertions, 9 deletions
diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c index 25cd4a07d09f..2a12f3dbdd02 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; } diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c index 067759e3d6a5..2e2d370a47b1 100644 --- a/arch/x86/xen/time.c +++ b/arch/x86/xen/time.c @@ -397,7 +397,9 @@ void xen_setup_timer(int cpu) name = "<timer kasprintf failed>"; irq = bind_virq_to_irqhandler(VIRQ_TIMER, cpu, xen_timer_interrupt, - IRQF_DISABLED|IRQF_PERCPU|IRQF_NOBALANCING|IRQF_TIMER, + IRQF_DISABLED|IRQF_PERCPU| + IRQF_NOBALANCING|IRQF_TIMER| + IRQF_FORCE_RESUME, name, NULL); evt = &per_cpu(xen_clock_events, cpu); |