diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/apic/io_apic.c | 57 |
1 files changed, 25 insertions, 32 deletions
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 2d49e4b4..46913ef 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -128,6 +128,9 @@ static int __init parse_noapic(char *str) } early_param("noapic", parse_noapic); +static int io_apic_setup_irq_pin_once(unsigned int irq, int node, + struct io_apic_irq_attr *attr); + /* Will be called in mpparse/acpi/sfi codes for saving IRQ info */ void mp_save_irq(struct mpc_intsrc *m) { @@ -1457,17 +1460,10 @@ void setup_IO_APIC_irq_extra(u32 gsi) if (apic_id == 0 || irq < NR_IRQS_LEGACY) return; - if (test_bit(pin, mp_ioapic_routing[apic_id].pin_programmed)) { - pr_debug("Pin %d-%d already programmed\n", - mp_ioapics[apic_id].apicid, pin); - return; - } - set_io_apic_irq_attr(&attr, apic_id, pin, irq_trigger(idx), irq_polarity(idx)); - if (!io_apic_setup_irq_pin(irq, node, &attr)) - set_bit(pin, mp_ioapic_routing[apic_id].pin_programmed); + io_apic_setup_irq_pin_once(irq, node, &attr); } /* @@ -3601,6 +3597,24 @@ io_apic_setup_irq_pin(unsigned int irq, int node, struct io_apic_irq_attr *attr) return ret; } +static int io_apic_setup_irq_pin_once(unsigned int irq, int node, + struct io_apic_irq_attr *attr) +{ + unsigned int id = attr->ioapic, pin = attr->ioapic_pin; + int ret; + + /* Avoid redundant programming */ + if (test_bit(pin, mp_ioapic_routing[id].pin_programmed)) { + pr_debug("Pin %d-%d already programmed\n", + mp_ioapics[id].apicid, pin); + return 0; + } + ret = io_apic_setup_irq_pin(irq, node, attr); + if (!ret) + set_bit(pin, mp_ioapic_routing[id].pin_programmed); + return ret; +} + static int __init io_apic_get_redir_entries(int ioapic) { union IO_APIC_reg_01 reg_01; @@ -3655,8 +3669,8 @@ int __init arch_probe_nr_irqs(void) } #endif -static int __io_apic_set_pci_routing(struct device *dev, int irq, - struct io_apic_irq_attr *irq_attr) +int io_apic_set_pci_routing(struct device *dev, int irq, + struct io_apic_irq_attr *irq_attr) { int node; @@ -3668,28 +3682,7 @@ static int __io_apic_set_pci_routing(struct device *dev, int irq, node = dev ? dev_to_node(dev) : cpu_to_node(0); - return io_apic_setup_irq_pin(irq, node, irq_attr); -} - -int io_apic_set_pci_routing(struct device *dev, int irq, - struct io_apic_irq_attr *irq_attr) -{ - int ioapic, pin; - /* - * Avoid pin reprogramming. PRTs typically include entries - * with redundant pin->gsi mappings (but unique PCI devices); - * we only program the IOAPIC on the first. - */ - ioapic = irq_attr->ioapic; - pin = irq_attr->ioapic_pin; - if (test_bit(pin, mp_ioapic_routing[ioapic].pin_programmed)) { - pr_debug("Pin %d-%d already programmed\n", - mp_ioapics[ioapic].apicid, pin); - return 0; - } - set_bit(pin, mp_ioapic_routing[ioapic].pin_programmed); - - return __io_apic_set_pci_routing(dev, irq, irq_attr); + return io_apic_setup_irq_pin_once(irq, node, irq_attr); } #ifdef CONFIG_X86_32 |
