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>
diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c
index 304eccb..d1aad69 100644
--- a/drivers/acpi/pci_irq.c
+++ b/drivers/acpi/pci_irq.c
@@ -484,14 +484,6 @@
if (!pin || !dev->irq_managed || dev->irq <= 0)
return;
- /* Keep IOAPIC pin configuration when suspending */
- if (dev->dev.power.is_prepared)
- return;
-#ifdef CONFIG_PM
- if (dev->dev.power.runtime_status == RPM_SUSPENDING)
- return;
-#endif
-
entry = acpi_pci_irq_lookup(dev, pin);
if (!entry)
return;
@@ -512,5 +504,6 @@
if (gsi >= 0) {
acpi_unregister_gsi(gsi);
dev->irq_managed = 0;
+ dev->irq = 0;
}
}