diff options
| author |   Jiang Liu <jiang.liu@linux.intel.com> | 2015-06-10 16:54:59 +0800 |
|---|---|---|
| committer |   Bjorn Helgaas <bhelgaas@google.com> | 2015-07-30 14:05:57 -0500 |
| commit | 991de2e59090e55c65a7f59a049142e3c480f7bd (patch) | |
| tree | b6b31c900abc49312c0306b4a0d596d74a22f71c /arch/x86/pci/common.c | |
| parent | PCI: Add pcibios_alloc_irq() and pcibios_free_irq() (diff) | |
| download | linux-dev-991de2e59090e55c65a7f59a049142e3c480f7bd.tar.xz linux-dev-991de2e59090e55c65a7f59a049142e3c480f7bd.zip | |
PCI, x86: Implement pcibios_alloc_irq() and pcibios_free_irq()
To support IOAPIC hotplug, we need to allocate PCI IRQ resources on demand
and free them when not used anymore.
Implement pcibios_alloc_irq() and pcibios_free_irq() to dynamically
allocate and free PCI IRQs.
Remove mp_should_keep_irq(), which is no longer used.
[bhelgaas: changelog]
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/pci/common.c')
| -rw-r--r-- | arch/x86/pci/common.c | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c index 8fd6f44aee83..dc78a4a9a466 100644 --- a/arch/x86/pci/common.c +++ b/arch/x86/pci/common.c @@ -673,24 +673,22 @@ int pcibios_add_device(struct pci_dev *dev) return 0; } -int pcibios_enable_device(struct pci_dev *dev, int mask) +int pcibios_alloc_irq(struct pci_dev *dev) { - int err; - - if ((err = pci_enable_resources(dev, mask)) < 0) - return err; - - if (!pci_dev_msi_enabled(dev)) - return pcibios_enable_irq(dev); - return 0; + return pcibios_enable_irq(dev); } -void pcibios_disable_device (struct pci_dev *dev) +void pcibios_free_irq(struct pci_dev *dev) { - if (!pci_dev_msi_enabled(dev) && pcibios_disable_irq) + if (pcibios_disable_irq) pcibios_disable_irq(dev); } +int pcibios_enable_device(struct pci_dev *dev, int mask) +{ + return pci_enable_resources(dev, mask); +} + int pci_ext_cfg_avail(void) { if (raw_pci_ext_ops) |