Pull trivial into test branch

[linux-2.6.git] / arch / i386 / kernel / acpi / boot.c

diff --git a/arch/i386/kernel/acpi/boot.c b/arch/i386/kernel/acpi/boot.c
index 22e4c466e5a3632b74a740d5a9f3111e8d36b3ad..094300b3a81fad123f347403434ff20f645cb5cc 100644 (file)
--- a/arch/i386/kernel/acpi/boot.c
+++ b/arch/i386/kernel/acpi/boot.c
@@ -82,6 +82,7 @@ EXPORT_SYMBOL(acpi_strict);
 acpi_interrupt_flags acpi_sci_flags __initdata;
 int acpi_sci_override_gsi __initdata;
 int acpi_skip_timer_override __initdata;
+int acpi_use_timer_override __initdata;
 
 #ifdef CONFIG_X86_LOCAL_APIC
 static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
@@ -332,7 +333,7 @@ acpi_parse_ioapic(acpi_table_entry_header * header, const unsigned long end)
 /*
  * Parse Interrupt Source Override for the ACPI SCI
  */
-static void acpi_sci_ioapic_setup(u32 bus_irq, u32 gsi, u16 polarity, u16 trigger)
+static void acpi_sci_ioapic_setup(u32 gsi, u16 polarity, u16 trigger)
 {
        if (trigger == 0)       /* compatible SCI trigger is level */
                trigger = 3;
@@ -352,13 +353,13 @@ static void acpi_sci_ioapic_setup(u32 bus_irq, u32 gsi, u16 polarity, u16 trigge
         * If GSI is < 16, this will update its flags,
         * else it will create a new mp_irqs[] entry.
         */
-       mp_override_legacy_irq(bus_irq, polarity, trigger, gsi);
+       mp_override_legacy_irq(gsi, polarity, trigger, gsi);
 
        /*
         * stash over-ride to indicate we've been here
         * and for later update of acpi_fadt
         */
-       acpi_sci_override_gsi = bus_irq;
+       acpi_sci_override_gsi = gsi;
        return;
 }
 
@@ -376,7 +377,7 @@ acpi_parse_int_src_ovr(acpi_table_entry_header * header,
        acpi_table_print_madt_entry(header);
 
        if (intsrc->bus_irq == acpi_fadt.sci_int) {
-               acpi_sci_ioapic_setup(intsrc->bus_irq, intsrc->global_irq,
+               acpi_sci_ioapic_setup(intsrc->global_irq,
                                      intsrc->flags.polarity,
                                      intsrc->flags.trigger);
                return 0;
@@ -879,7 +880,7 @@ static int __init acpi_parse_madt_ioapic_entries(void)
         * pretend we got one so we can set the SCI flags.
         */
        if (!acpi_sci_override_gsi)
-               acpi_sci_ioapic_setup(acpi_fadt.sci_int, acpi_fadt.sci_int, 0, 0);
+               acpi_sci_ioapic_setup(acpi_fadt.sci_int, 0, 0);
 
        /* Fill in identity legacy mapings where no override */
        mp_config_acpi_legacy_irqs();
@@ -1300,6 +1301,13 @@ static int __init parse_acpi_skip_timer_override(char *arg)
        return 0;
 }
 early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override);
+
+static int __init parse_acpi_use_timer_override(char *arg)
+{
+       acpi_use_timer_override = 1;
+       return 0;
+}
+early_param("acpi_use_timer_override", parse_acpi_use_timer_override);
 #endif /* CONFIG_X86_IO_APIC */
 
 static int __init setup_acpi_sci(char *s)
@@ -1319,3 +1327,25 @@ static int __init setup_acpi_sci(char *s)
        return 0;
 }
 early_param("acpi_sci", setup_acpi_sci);
+
+int __acpi_acquire_global_lock(unsigned int *lock)
+{
+       unsigned int old, new, val;
+       do {
+               old = *lock;
+               new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
+               val = cmpxchg(lock, old, new);
+       } while (unlikely (val != old));
+       return (new < 3) ? -1 : 0;
+}
+
+int __acpi_release_global_lock(unsigned int *lock)
+{
+       unsigned int old, new, val;
+       do {
+               old = *lock;
+               new = old & ~0x3;
+               val = cmpxchg(lock, old, new);
+       } while (unlikely (val != old));
+       return old & 0x1;
+}