7 files changed, 96 insertions, 25 deletions

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 5b9b12321ad..350bee1d54d 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -116,6 +116,9 @@ config GENERIC_TIME_VSYSCALL
 config ARCH_HAS_CPU_RELAX
         def_bool y
 
+config ARCH_HAS_DEFAULT_IDLE
+        def_bool y
+
 config ARCH_HAS_CACHE_LINE_SIZE
         def_bool y
 
@@ -1635,6 +1638,8 @@ source "arch/x86/kernel/cpu/cpufreq/Kconfig"
 
 source "drivers/cpuidle/Kconfig"
 
+source "drivers/idle/Kconfig"
+
 endmenu
 
 
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 0d1c26a583c..53b01a1ae10 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -153,12 +153,13 @@ char *__init __acpi_map_table(unsigned long phys, unsigned long size)
 }
 
 #ifdef CONFIG_PCI_MMCONFIG
+
+static int acpi_mcfg_64bit_base_addr __initdata = FALSE;
+
 /* The physical address of the MMCONFIG aperture.  Set from ACPI tables. */
 struct acpi_mcfg_allocation *pci_mmcfg_config;
 int pci_mmcfg_config_num;
 
-static int acpi_mcfg_64bit_base_addr __initdata = FALSE;
-
 static int __init acpi_mcfg_oem_check(struct acpi_table_mcfg *mcfg)
 {
         if (!strcmp(mcfg->header.oem_id, "SGI"))
diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c
index c44cd6dbfa1..806b4e9051b 100644
--- a/arch/x86/kernel/acpi/sleep.c
+++ b/arch/x86/kernel/acpi/sleep.c
@@ -22,7 +22,7 @@ unsigned long acpi_realmode_flags;
 static unsigned long acpi_realmode;
 
 #if defined(CONFIG_SMP) && defined(CONFIG_64BIT)
-static char temp_stack[10240];
+static char temp_stack[4096];
 #endif
 
 /**
@@ -98,7 +98,7 @@ int acpi_save_state_mem(void)
 #else /* CONFIG_64BIT */
         header->trampoline_segment = setup_trampoline() >> 4;
 #ifdef CONFIG_SMP
-        stack_start.sp = temp_stack + 4096;
+        stack_start.sp = temp_stack + sizeof(temp_stack);
         early_gdt_descr.address =
                         (unsigned long)get_cpu_gdt_table(smp_processor_id());
 #endif
diff --git a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
index c24c4a487b7..8e48c5d4467 100644
--- a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
+++ b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
@@ -780,6 +780,9 @@ static int __init acpi_cpufreq_init(void)
 {
         int ret;
 
+        if (acpi_disabled)
+                return 0;
+
         dprintk("acpi_cpufreq_init\n");
 
         ret = acpi_cpufreq_early_init();
diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
index 008d23ba491..d3dcd58b87c 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
@@ -45,7 +45,6 @@
 #endif
 
 #define PFX "powernow-k8: "
-#define BFX PFX "BIOS error: "
 #define VERSION "version 2.20.00"
 #include "powernow-k8.h"
 
@@ -536,35 +535,40 @@ static int check_pst_table(struct powernow_k8_data *data, struct pst_s *pst, u8
 
         for (j = 0; j < data->numps; j++) {
                 if (pst[j].vid > LEAST_VID) {
-                        printk(KERN_ERR PFX "vid %d invalid : 0x%x\n", j, pst[j].vid);
+                        printk(KERN_ERR FW_BUG PFX "vid %d invalid : 0x%x\n",
+                               j, pst[j].vid);
                         return -EINVAL;
                 }
                 if (pst[j].vid < data->rvo) {   /* vid + rvo >= 0 */
-                        printk(KERN_ERR BFX "0 vid exceeded with pstate %d\n", j);
+                        printk(KERN_ERR FW_BUG PFX "0 vid exceeded with pstate"
+                               " %d\n", j);
                         return -ENODEV;
                 }
                 if (pst[j].vid < maxvid + data->rvo) {  /* vid + rvo >= maxvid */
-                        printk(KERN_ERR BFX "maxvid exceeded with pstate %d\n", j);
+                        printk(KERN_ERR FW_BUG PFX "maxvid exceeded with pstate"
+                               " %d\n", j);
                         return -ENODEV;
                 }
                 if (pst[j].fid > MAX_FID) {
-                        printk(KERN_ERR BFX "maxfid exceeded with pstate %d\n", j);
+                        printk(KERN_ERR FW_BUG PFX "maxfid exceeded with pstate"
+                               " %d\n", j);
                         return -ENODEV;
                 }
                 if (j && (pst[j].fid < HI_FID_TABLE_BOTTOM)) {
                         /* Only first fid is allowed to be in "low" range */
-                        printk(KERN_ERR BFX "two low fids - %d : 0x%x\n", j, pst[j].fid);
+                        printk(KERN_ERR FW_BUG PFX "two low fids - %d : "
+                               "0x%x\n", j, pst[j].fid);
                         return -EINVAL;
                 }
                 if (pst[j].fid < lastfid)
                         lastfid = pst[j].fid;
         }
         if (lastfid & 1) {
-                printk(KERN_ERR BFX "lastfid invalid\n");
+                printk(KERN_ERR FW_BUG PFX "lastfid invalid\n");
                 return -EINVAL;
         }
         if (lastfid > LO_FID_TABLE_TOP)
-                printk(KERN_INFO BFX  "first fid not from lo freq table\n");
+                printk(KERN_INFO FW_BUG PFX  "first fid not from lo freq table\n");
 
         return 0;
 }
@@ -672,13 +676,13 @@ static int find_psb_table(struct powernow_k8_data *data)
 
                 dprintk("table vers: 0x%x\n", psb->tableversion);
                 if (psb->tableversion != PSB_VERSION_1_4) {
-                        printk(KERN_ERR BFX "PSB table is not v1.4\n");
+                        printk(KERN_ERR FW_BUG PFX "PSB table is not v1.4\n");
                         return -ENODEV;
                 }
 
                 dprintk("flags: 0x%x\n", psb->flags1);
                 if (psb->flags1) {
-                        printk(KERN_ERR BFX "unknown flags\n");
+                        printk(KERN_ERR FW_BUG PFX "unknown flags\n");
                         return -ENODEV;
                 }
 
@@ -705,7 +709,7 @@ static int find_psb_table(struct powernow_k8_data *data)
                         }
                 }
                 if (cpst != 1) {
-                        printk(KERN_ERR BFX "numpst must be 1\n");
+                        printk(KERN_ERR FW_BUG PFX "numpst must be 1\n");
                         return -ENODEV;
                 }
 
@@ -1130,17 +1134,19 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
                                "ACPI Processor module before starting this "
                                "driver.\n");
 #else
-                        printk(KERN_ERR PFX "Your BIOS does not provide ACPI "
-                               "_PSS objects in a way that Linux understands. "
-                               "Please report this to the Linux ACPI maintainers"
-                               " and complain to your BIOS vendor.\n");
+                        printk(KERN_ERR FW_BUG PFX "Your BIOS does not provide"
+                               " ACPI _PSS objects in a way that Linux "
+                               "understands. Please report this to the Linux "
+                               "ACPI maintainers and complain to your BIOS "
+                               "vendor.\n");
 #endif
                         kfree(data);
                         return -ENODEV;
                 }
                 if (pol->cpu != 0) {
-                        printk(KERN_ERR PFX "No ACPI _PSS objects for CPU other than "
-                               "CPU0. Complain to your BIOS vendor.\n");
+                        printk(KERN_ERR FW_BUG PFX "No ACPI _PSS objects for "
+                               "CPU other than CPU0. Complain to your BIOS "
+                               "vendor.\n");
                         kfree(data);
                         return -ENODEV;
                 }
@@ -1193,7 +1199,7 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
 
         /* min/max the cpu is capable of */
         if (cpufreq_frequency_table_cpuinfo(pol, data->powernow_table)) {
-                printk(KERN_ERR PFX "invalid powernow_table\n");
+                printk(KERN_ERR FW_BUG PFX "invalid powernow_table\n");
                 powernow_k8_cpu_exit_acpi(data);
                 kfree(data->powernow_table);
                 kfree(data);
diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c
index 733c4f8d42e..3ce029ffaa5 100644
--- a/arch/x86/kernel/early-quirks.c
+++ b/arch/x86/kernel/early-quirks.c
@@ -95,7 +95,8 @@ static void __init nvidia_bugs(int num, int slot, int func)
 
 }
 
-static u32 ati_ixp4x0_rev(int num, int slot, int func)
+#if defined(CONFIG_ACPI) && defined(CONFIG_X86_IO_APIC)
+static u32 __init ati_ixp4x0_rev(int num, int slot, int func)
 {
         u32 d;
         u8  b;
@@ -115,7 +116,6 @@ static u32 ati_ixp4x0_rev(int num, int slot, int func)
 
 static void __init ati_bugs(int num, int slot, int func)
 {
-#if defined(CONFIG_ACPI) && defined (CONFIG_X86_IO_APIC)
         u32 d;
         u8  b;
 
@@ -138,9 +138,56 @@ static void __init ati_bugs(int num, int slot, int func)
                 printk(KERN_INFO "If you got timer trouble "
                        "try acpi_use_timer_override\n");
         }
-#endif
 }
 
+static u32 __init ati_sbx00_rev(int num, int slot, int func)
+{
+        u32 old, d;
+
+        d = read_pci_config(num, slot, func, 0x70);
+        old = d;
+        d &= ~(1<<8);
+        write_pci_config(num, slot, func, 0x70, d);
+        d = read_pci_config(num, slot, func, 0x8);
+        d &= 0xff;
+        write_pci_config(num, slot, func, 0x70, old);
+
+        return d;
+}
+
+static void __init ati_bugs_contd(int num, int slot, int func)
+{
+        u32 d, rev;
+
+        if (acpi_use_timer_override)
+                return;
+
+        rev = ati_sbx00_rev(num, slot, func);
+        if (rev > 0x13)
+                return;
+
+        /* check for IRQ0 interrupt swap */
+        d = read_pci_config(num, slot, func, 0x64);
+        if (!(d & (1<<14)))
+                acpi_skip_timer_override = 1;
+
+        if (acpi_skip_timer_override) {
+                printk(KERN_INFO "SB600 revision 0x%x\n", rev);
+                printk(KERN_INFO "Ignoring ACPI timer override.\n");
+                printk(KERN_INFO "If you got timer trouble "
+                       "try acpi_use_timer_override\n");
+        }
+}
+#else
+static void __init ati_bugs(int num, int slot, int func)
+{
+}
+
+static void __init ati_bugs_contd(int num, int slot, int func)
+{
+}
+#endif
+
 #ifdef CONFIG_DMAR
 static void __init intel_g33_dmar(int num, int slot, int func)
 {
@@ -176,6 +223,8 @@ static struct chipset early_qrk[] __initdata = {
           PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, fix_hypertransport_config },
         { PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP400_SMBUS,
           PCI_CLASS_SERIAL_SMBUS, PCI_ANY_ID, 0, ati_bugs },
+        { PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS,
+          PCI_CLASS_SERIAL_SMBUS, PCI_ANY_ID, 0, ati_bugs_contd },
 #ifdef CONFIG_DMAR
         { PCI_VENDOR_ID_INTEL, 0x29c0,
           PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, intel_g33_dmar },
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index cd8c0ed02b7..c958120fb1b 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -63,6 +63,13 @@ void idle_notifier_register(struct notifier_block *n)
 {
         atomic_notifier_chain_register(&idle_notifier, n);
 }
+EXPORT_SYMBOL_GPL(idle_notifier_register);
+
+void idle_notifier_unregister(struct notifier_block *n)
+{
+        atomic_notifier_chain_unregister(&idle_notifier, n);
+}
+EXPORT_SYMBOL_GPL(idle_notifier_unregister);
 
 void enter_idle(void)
 {