ACPI, PCI, irq: Do not share PCI IRQ with ISA IRQ

[linux-2.6-block.git] / drivers / acpi / pci_link.c

diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index 3b4ea98e3ea069eca5f9e0094f520c31eee639b2..246e50d2212093191a130077fa7ae0833ea57640 100644 (file)
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -553,6 +553,13 @@ static int acpi_pci_link_allocate(struct acpi_pci_link *link)
                                irq = link->irq.possible[i];
                }
        }
+       if (acpi_irq_penalty[irq] >= PIRQ_PENALTY_ISA_ALWAYS) {
+               printk(KERN_ERR PREFIX "No IRQ available for %s [%s]. "
+                           "Try pci=noacpi or acpi=off\n",
+                           acpi_device_name(link->device),
+                           acpi_device_bid(link->device));
+               return -ENODEV;
+       }
 
        /* Attempt to enable the link device at this IRQ. */
        if (acpi_pci_link_set(link, irq)) {
@@ -821,6 +828,12 @@ void acpi_penalize_isa_irq(int irq, int active)
        }
 }
 
+bool acpi_isa_irq_available(int irq)
+{
+       return irq >= 0 && (irq >= ARRAY_SIZE(acpi_irq_penalty) ||
+                           acpi_irq_penalty[irq] < PIRQ_PENALTY_ISA_ALWAYS);
+}
+
 /*
  * Penalize IRQ used by ACPI SCI. If ACPI SCI pin attributes conflict with
  * PCI IRQ attributes, mark ACPI SCI as ISA_ALWAYS so it won't be use for