Pull sn_pci_legacy_read-write into release branch

[karo-tx-linux.git] / arch / i386 / kernel / io_apic.c

diff --git a/arch/i386/kernel/io_apic.c b/arch/i386/kernel/io_apic.c
index 4a5940431579874f83040baf11307a63d8681264..fb3991e8229e5e65cf696cc4d2d7eec55546cd28 100644 (file)
--- a/arch/i386/kernel/io_apic.c
+++ b/arch/i386/kernel/io_apic.c
@@ -21,7 +21,6 @@
  */
 
 #include <linux/mm.h>
-#include <linux/irq.h>
 #include <linux/interrupt.h>
 #include <linux/init.h>
 #include <linux/delay.h>
@@ -60,6 +59,8 @@ int sis_apic_bug = -1;
  */
 int nr_ioapic_registers[MAX_IO_APICS];
 
+int disable_timer_pin_1 __initdata;
+
 /*
  * Rough estimation of how many shared IRQs there are, can
  * be changed anytime.
@@ -78,7 +79,7 @@ static struct irq_pin_list {
        int apic, pin, next;
 } irq_2_pin[PIN_MAP_SIZE];
 
-int vector_irq[NR_VECTORS] = { [0 ... NR_VECTORS - 1] = -1};
+int vector_irq[NR_VECTORS] __read_mostly = { [0 ... NR_VECTORS - 1] = -1};
 #ifdef CONFIG_PCI_MSI
 #define vector_to_irq(vector)  \
        (platform_legacy_irq(vector) ? vector : vector_irq[vector])
@@ -573,8 +574,7 @@ static int balanced_irq(void *unused)
        }
 
        for ( ; ; ) {
-               set_current_state(TASK_INTERRUPTIBLE);
-               time_remaining = schedule_timeout(time_remaining);
+               time_remaining = schedule_timeout_interruptible(time_remaining);
                try_to_freeze();
                if (time_after(jiffies,
                                prev_balance_time+balanced_irq_interval)) {
@@ -1119,7 +1119,7 @@ static inline int IO_APIC_irq_trigger(int irq)
 }
 
 /* irq_vectors is indexed by the sum of all RTEs in all I/O APICs. */
-u8 irq_vector[NR_IRQ_VECTORS] = { FIRST_DEVICE_VECTOR , 0 };
+u8 irq_vector[NR_IRQ_VECTORS] __read_mostly = { FIRST_DEVICE_VECTOR , 0 };
 
 int assign_irq_vector(int irq)
 {
@@ -1634,9 +1634,9 @@ void disable_IO_APIC(void)
        clear_IO_APIC();
 
        /*
-        * If the i82559 is routed through an IOAPIC
+        * If the i8259 is routed through an IOAPIC
         * Put that IOAPIC in virtual wire mode
-        * so legacy interrups can be delivered.
+        * so legacy interrupts can be delivered.
         */
        pin = find_isa_irq_pin(0, mp_ExtINT);
        if (pin != -1) {
@@ -1990,7 +1990,7 @@ static void set_ioapic_affinity_vector (unsigned int vector,
  * edge-triggered handler, without risking IRQ storms and other ugly
  * races.
  */
-static struct hw_interrupt_type ioapic_edge_type = {
+static struct hw_interrupt_type ioapic_edge_type __read_mostly = {
        .typename       = "IO-APIC-edge",
        .startup        = startup_edge_ioapic,
        .shutdown       = shutdown_edge_ioapic,
@@ -2003,7 +2003,7 @@ static struct hw_interrupt_type ioapic_edge_type = {
 #endif
 };
 
-static struct hw_interrupt_type ioapic_level_type = {
+static struct hw_interrupt_type ioapic_level_type __read_mostly = {
        .typename       = "IO-APIC-level",
        .startup        = startup_level_ioapic,
        .shutdown       = shutdown_level_ioapic,
@@ -2076,7 +2076,7 @@ static void ack_lapic_irq (unsigned int irq)
 
 static void end_lapic_irq (unsigned int i) { /* nothing */ }
 
-static struct hw_interrupt_type lapic_irq_type = {
+static struct hw_interrupt_type lapic_irq_type __read_mostly = {
        .typename       = "local-APIC-edge",
        .startup        = NULL, /* startup_irq() not used for IRQ0 */
        .shutdown       = NULL, /* shutdown_irq() not used for IRQ0 */
@@ -2212,6 +2212,8 @@ static inline void check_timer(void)
                                setup_nmi();
                                enable_8259A_irq(0);
                        }
+                       if (disable_timer_pin_1 > 0)
+                               clear_IO_APIC_pin(0, pin1);
                        return;
                }
                clear_IO_APIC_pin(0, pin1);
@@ -2423,7 +2425,7 @@ device_initcall(ioapic_init_sysfs);
                           ACPI-based IOAPIC Configuration
    -------------------------------------------------------------------------- */
 
-#ifdef CONFIG_ACPI_BOOT
+#ifdef CONFIG_ACPI
 
 int __init io_apic_get_unique_id (int ioapic, int apic_id)
 {
@@ -2577,4 +2579,4 @@ int io_apic_set_pci_routing (int ioapic, int pin, int irq, int edge_level, int a
        return 0;
 }
 
-#endif /*CONFIG_ACPI_BOOT*/
+#endif /* CONFIG_ACPI */