x86: fix C1E && nx6325 stability problem

[linux-2.6-omap-h63xx.git] / arch / x86 / kernel / acpi / boot.c

diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 6516359922baaf22d6d55e15adc6b8c71f7042d9..e1f01394b681ab71e61a00570d6c04285c0ca2ae 100644 (file)
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -1373,8 +1373,6 @@ static void __init acpi_process_madt(void)
        return;
 }
 
-#ifdef __i386__
-
 static int __init disable_acpi_irq(const struct dmi_system_id *d)
 {
        if (!acpi_force) {
@@ -1435,6 +1433,17 @@ dmi_disable_irq0_through_ioapic(const struct dmi_system_id *d)
        return 0;
 }
 
+/*
+ * Force ignoring BIOS IRQ0 pin2 override
+ */
+static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d)
+{
+       pr_notice("%s detected: Ignoring BIOS IRQ0 pin2 override\n", d->ident);
+       acpi_skip_timer_override = 1;
+       force_mask_ioapic_irq_2();
+       return 0;
+}
+
 /*
  * If your system is blacklisted here, but you find that acpi=force
  * works for you, please contact acpi-devel@sourceforge.net
@@ -1628,11 +1637,35 @@ static struct dmi_system_id __initdata acpi_dmi_table[] = {
                     DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"),
                     },
         },
+       /*
+        * HP laptops which use a DSDT reporting as HP/SB400/10000,
+        * which includes some code which overrides all temperature
+        * trip points to 16C if the INTIN2 input of the I/O APIC
+        * is enabled.  This input is incorrectly designated the
+        * ISA IRQ 0 via an interrupt source override even though
+        * it is wired to the output of the master 8259A and INTIN0
+        * is not connected at all.  Force ignoring BIOS IRQ0 pin2
+        * override in that cases.
+        */
+       {
+        .callback = dmi_ignore_irq0_timer_override,
+        .ident = "HP NX6125 laptop",
+        .matches = {
+                    DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+                    DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"),
+                    },
+        },
+       {
+        .callback = dmi_ignore_irq0_timer_override,
+        .ident = "HP NX6325 laptop",
+        .matches = {
+                    DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+                    DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"),
+                    },
+        },
        {}
 };
 
-#endif                         /* __i386__ */
-
 /*
  * acpi_boot_table_init() and acpi_boot_init()
  *  called from setup_arch(), always.
@@ -1660,9 +1693,7 @@ int __init acpi_boot_table_init(void)
 {
        int error;
 
-#ifdef __i386__
        dmi_check_system(acpi_dmi_table);
-#endif
 
        /*
         * If acpi_disabled, bail out
@@ -1787,6 +1818,20 @@ static int __init parse_pci(char *arg)
 }
 early_param("pci", parse_pci);
 
+int __init acpi_mps_check(void)
+{
+#if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE)
+/* mptable code is not built-in*/
+       if (acpi_disabled || acpi_noirq) {
+               printk(KERN_WARNING "MPS support code is not built-in.\n"
+                      "Using acpi=off or acpi=noirq or pci=noacpi "
+                      "may have problem\n");
+               return 1;
+       }
+#endif
+       return 0;
+}
+
 #ifdef CONFIG_X86_IO_APIC
 static int __init parse_acpi_skip_timer_override(char *arg)
 {