13 files changed, 214 insertions, 248 deletions

diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 80988136f26d..addf07393ef4 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -60,6 +60,7 @@ choice
 
 config IA64_GENERIC
         bool "generic"
+        select ACPI
         select NUMA
         select ACPI_NUMA
         select VIRTUAL_MEM_MAP
@@ -340,6 +341,7 @@ config IA64_PALINFO
 
 config ACPI_DEALLOCATE_IRQ
         bool
+        depends on ACPI
         depends on IOSAPIC && EXPERIMENTAL
         default y
 
@@ -351,38 +353,10 @@ endmenu
 
 menu "Power management and ACPI"
 
-config PM
-        bool "Power Management support"
-        depends on !IA64_HP_SIM
-        default y
-        help
-          "Power Management" means that parts of your computer are shut
-          off or put into a power conserving "sleep" mode if they are not
-          being used.  There are two competing standards for doing this: APM
-          and ACPI.  If you want to use either one, say Y here and then also
-          to the requisite support below.
-
-          Power Management is most important for battery powered laptop
-          computers; if you have a laptop, check out the Linux Laptop home
-          page on the WWW at <http://www.linux-on-laptops.com/> and the
-          Battery Powered Linux mini-HOWTO, available from
-          <http://www.tldp.org/docs.html#howto>.
-
-          Note that, even if you say N here, Linux on the x86 architecture
-          will issue the hlt instruction if nothing is to be done, thereby
-          sending the processor to sleep and saving power.
-
-config ACPI
-        bool
-        depends on !IA64_HP_SIM
-        default y
-
-if !IA64_HP_SIM
+source "kernel/power/Kconfig"
 
 source "drivers/acpi/Kconfig"
 
-endif
-
 endmenu
 
 if !IA64_HP_SIM
diff --git a/arch/ia64/configs/bigsur_defconfig b/arch/ia64/configs/bigsur_defconfig
index b95fcf86ea00..3b65cbb31b1d 100644
--- a/arch/ia64/configs/bigsur_defconfig
+++ b/arch/ia64/configs/bigsur_defconfig
@@ -107,18 +107,12 @@ CONFIG_ACPI=y
 #
 # ACPI (Advanced Configuration and Power Interface) Support
 #
-CONFIG_ACPI_BOOT=y
-CONFIG_ACPI_INTERPRETER=y
 CONFIG_ACPI_BUTTON=m
-CONFIG_ACPI_VIDEO=m
 CONFIG_ACPI_FAN=m
 CONFIG_ACPI_PROCESSOR=m
 CONFIG_ACPI_THERMAL=m
-CONFIG_ACPI_BLACKLIST_YEAR=0
 # CONFIG_ACPI_DEBUG is not set
-CONFIG_ACPI_BUS=y
 CONFIG_ACPI_POWER=y
-CONFIG_ACPI_PCI=y
 CONFIG_ACPI_SYSTEM=y
 
 #
diff --git a/arch/ia64/configs/sn2_defconfig b/arch/ia64/configs/sn2_defconfig
index dccf35c60b94..1ca6e6e11b42 100644
--- a/arch/ia64/configs/sn2_defconfig
+++ b/arch/ia64/configs/sn2_defconfig
@@ -130,19 +130,12 @@ CONFIG_ACPI=y
 #
 # ACPI (Advanced Configuration and Power Interface) Support
 #
-CONFIG_ACPI_BOOT=y
-CONFIG_ACPI_INTERPRETER=y
 # CONFIG_ACPI_BUTTON is not set
-CONFIG_ACPI_VIDEO=m
-CONFIG_ACPI_HOTKEY=m
 # CONFIG_ACPI_FAN is not set
 # CONFIG_ACPI_PROCESSOR is not set
 CONFIG_ACPI_NUMA=y
-CONFIG_ACPI_BLACKLIST_YEAR=0
 # CONFIG_ACPI_DEBUG is not set
-CONFIG_ACPI_BUS=y
 CONFIG_ACPI_POWER=y
-CONFIG_ACPI_PCI=y
 CONFIG_ACPI_SYSTEM=y
 # CONFIG_ACPI_CONTAINER is not set
 
diff --git a/arch/ia64/configs/tiger_defconfig b/arch/ia64/configs/tiger_defconfig
index c853cfcd2d11..3ec94a12eac0 100644
--- a/arch/ia64/configs/tiger_defconfig
+++ b/arch/ia64/configs/tiger_defconfig
@@ -128,20 +128,13 @@ CONFIG_ACPI=y
 #
 # ACPI (Advanced Configuration and Power Interface) Support
 #
-CONFIG_ACPI_BOOT=y
-CONFIG_ACPI_INTERPRETER=y
 CONFIG_ACPI_BUTTON=m
-# CONFIG_ACPI_VIDEO is not set
-# CONFIG_ACPI_HOTKEY is not set
 CONFIG_ACPI_FAN=m
 CONFIG_ACPI_PROCESSOR=m
 # CONFIG_ACPI_HOTPLUG_CPU is not set
 CONFIG_ACPI_THERMAL=m
-CONFIG_ACPI_BLACKLIST_YEAR=0
 # CONFIG_ACPI_DEBUG is not set
-CONFIG_ACPI_BUS=y
 CONFIG_ACPI_POWER=y
-CONFIG_ACPI_PCI=y
 CONFIG_ACPI_SYSTEM=y
 # CONFIG_ACPI_CONTAINER is not set
 
diff --git a/arch/ia64/configs/zx1_defconfig b/arch/ia64/configs/zx1_defconfig
index 88e8867fa8e8..d4cf73d124bc 100644
--- a/arch/ia64/configs/zx1_defconfig
+++ b/arch/ia64/configs/zx1_defconfig
@@ -128,19 +128,12 @@ CONFIG_ACPI=y
 #
 # ACPI (Advanced Configuration and Power Interface) Support
 #
-CONFIG_ACPI_BOOT=y
-CONFIG_ACPI_INTERPRETER=y
 CONFIG_ACPI_BUTTON=y
-CONFIG_ACPI_VIDEO=m
-CONFIG_ACPI_HOTKEY=m
 CONFIG_ACPI_FAN=y
 CONFIG_ACPI_PROCESSOR=y
 CONFIG_ACPI_THERMAL=y
-CONFIG_ACPI_BLACKLIST_YEAR=0
 # CONFIG_ACPI_DEBUG is not set
-CONFIG_ACPI_BUS=y
 CONFIG_ACPI_POWER=y
-CONFIG_ACPI_PCI=y
 CONFIG_ACPI_SYSTEM=y
 # CONFIG_ACPI_CONTAINER is not set
 
diff --git a/arch/ia64/defconfig b/arch/ia64/defconfig
index 8444add76380..b6ec8d32c346 100644
--- a/arch/ia64/defconfig
+++ b/arch/ia64/defconfig
@@ -118,20 +118,14 @@ CONFIG_ACPI=y
 #
 # ACPI (Advanced Configuration and Power Interface) Support
 #
-CONFIG_ACPI_BOOT=y
-CONFIG_ACPI_INTERPRETER=y
 CONFIG_ACPI_BUTTON=m
-CONFIG_ACPI_VIDEO=m
 CONFIG_ACPI_FAN=m
 CONFIG_ACPI_PROCESSOR=m
 CONFIG_ACPI_HOTPLUG_CPU=y
 CONFIG_ACPI_THERMAL=m
 CONFIG_ACPI_NUMA=y
-CONFIG_ACPI_BLACKLIST_YEAR=0
 # CONFIG_ACPI_DEBUG is not set
-CONFIG_ACPI_BUS=y
 CONFIG_ACPI_POWER=y
-CONFIG_ACPI_PCI=y
 CONFIG_ACPI_SYSTEM=y
 CONFIG_ACPI_CONTAINER=m
 
diff --git a/arch/ia64/kernel/acpi-ext.c b/arch/ia64/kernel/acpi-ext.c
index 2623df5e2633..13a5b3b49bf8 100644
--- a/arch/ia64/kernel/acpi-ext.c
+++ b/arch/ia64/kernel/acpi-ext.c
@@ -17,20 +17,20 @@
 #include <asm/acpi-ext.h>
 
 struct acpi_vendor_descriptor {
-        u8                              guid_id;
-        efi_guid_t                      guid;
+        u8 guid_id;
+        efi_guid_t guid;
 };
 
 struct acpi_vendor_info {
-        struct acpi_vendor_descriptor   *descriptor;
-        u8                              *data;
-        u32                             length;
+        struct acpi_vendor_descriptor *descriptor;
+        u8 *data;
+        u32 length;
 };
 
 acpi_status
 acpi_vendor_resource_match(struct acpi_resource *resource, void *context)
 {
-        struct acpi_vendor_info *info = (struct acpi_vendor_info *) context;
+        struct acpi_vendor_info *info = (struct acpi_vendor_info *)context;
         struct acpi_resource_vendor *vendor;
         struct acpi_vendor_descriptor *descriptor;
         u32 length;
@@ -38,8 +38,8 @@ acpi_vendor_resource_match(struct acpi_resource *resource, void *context)
         if (resource->id != ACPI_RSTYPE_VENDOR)
                 return AE_OK;
 
-        vendor = (struct acpi_resource_vendor *) &resource->data;
-        descriptor = (struct acpi_vendor_descriptor *) vendor->reserved;
+        vendor = (struct acpi_resource_vendor *)&resource->data;
+        descriptor = (struct acpi_vendor_descriptor *)vendor->reserved;
         if (vendor->length <= sizeof(*info->descriptor) ||
             descriptor->guid_id != info->descriptor->guid_id ||
             efi_guidcmp(descriptor->guid, info->descriptor->guid))
@@ -50,21 +50,24 @@ acpi_vendor_resource_match(struct acpi_resource *resource, void *context)
         if (!info->data)
                 return AE_NO_MEMORY;
 
-        memcpy(info->data, vendor->reserved + sizeof(struct acpi_vendor_descriptor), length);
+        memcpy(info->data,
+               vendor->reserved + sizeof(struct acpi_vendor_descriptor),
+               length);
         info->length = length;
         return AE_CTRL_TERMINATE;
 }
 
 acpi_status
-acpi_find_vendor_resource(acpi_handle obj, struct acpi_vendor_descriptor *id,
-                u8 **data, u32 *length)
+acpi_find_vendor_resource(acpi_handle obj, struct acpi_vendor_descriptor * id,
+                          u8 ** data, u32 * length)
 {
         struct acpi_vendor_info info;
 
         info.descriptor = id;
         info.data = NULL;
 
-        acpi_walk_resources(obj, METHOD_NAME__CRS, acpi_vendor_resource_match, &info);
+        acpi_walk_resources(obj, METHOD_NAME__CRS, acpi_vendor_resource_match,
+                            &info);
         if (!info.data)
                 return AE_NOT_FOUND;
 
@@ -75,17 +78,19 @@ acpi_find_vendor_resource(acpi_handle obj, struct acpi_vendor_descriptor *id,
 
 struct acpi_vendor_descriptor hp_ccsr_descriptor = {
         .guid_id = 2,
-        .guid    = EFI_GUID(0x69e9adf9, 0x924f, 0xab5f, 0xf6, 0x4a, 0x24, 0xd2, 0x01, 0x37, 0x0e, 0xad)
+        .guid =
+            EFI_GUID(0x69e9adf9, 0x924f, 0xab5f, 0xf6, 0x4a, 0x24, 0xd2, 0x01,
+                     0x37, 0x0e, 0xad)
 };
 
-acpi_status
-hp_acpi_csr_space(acpi_handle obj, u64 *csr_base, u64 *csr_length)
+acpi_status hp_acpi_csr_space(acpi_handle obj, u64 * csr_base, u64 * csr_length)
 {
         acpi_status status;
         u8 *data;
         u32 length;
 
-        status = acpi_find_vendor_resource(obj, &hp_ccsr_descriptor, &data, &length);
+        status =
+            acpi_find_vendor_resource(obj, &hp_ccsr_descriptor, &data, &length);
 
         if (ACPI_FAILURE(status) || length != 16)
                 return AE_NOT_FOUND;
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index 9609f243e5d0..318787c84ac0 100644
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -74,12 +74,11 @@ unsigned int acpi_cpei_override;
 unsigned int acpi_cpei_phys_cpuid;
 
 #define MAX_SAPICS 256
-u16 ia64_acpiid_to_sapicid[MAX_SAPICS] =
-        { [0 ... MAX_SAPICS - 1] = -1 };
+u16 ia64_acpiid_to_sapicid[MAX_SAPICS] = {[0 ... MAX_SAPICS - 1] = -1 };
+
 EXPORT_SYMBOL(ia64_acpiid_to_sapicid);
 
-const char *
-acpi_get_sysname (void)
+const char *acpi_get_sysname(void)
 {
 #ifdef CONFIG_IA64_GENERIC
         unsigned long rsdp_phys;
@@ -89,27 +88,29 @@ acpi_get_sysname (void)
 
         rsdp_phys = acpi_find_rsdp();
         if (!rsdp_phys) {
-                printk(KERN_ERR "ACPI 2.0 RSDP not found, default to \"dig\"\n");
+                printk(KERN_ERR
+                       "ACPI 2.0 RSDP not found, default to \"dig\"\n");
                 return "dig";
         }
 
-        rsdp = (struct acpi20_table_rsdp *) __va(rsdp_phys);
+        rsdp = (struct acpi20_table_rsdp *)__va(rsdp_phys);
         if (strncmp(rsdp->signature, RSDP_SIG, sizeof(RSDP_SIG) - 1)) {
-                printk(KERN_ERR "ACPI 2.0 RSDP signature incorrect, default to \"dig\"\n");
+                printk(KERN_ERR
+                       "ACPI 2.0 RSDP signature incorrect, default to \"dig\"\n");
                 return "dig";
         }
 
-        xsdt = (struct acpi_table_xsdt *) __va(rsdp->xsdt_address);
+        xsdt = (struct acpi_table_xsdt *)__va(rsdp->xsdt_address);
         hdr = &xsdt->header;
         if (strncmp(hdr->signature, XSDT_SIG, sizeof(XSDT_SIG) - 1)) {
-                printk(KERN_ERR "ACPI 2.0 XSDT signature incorrect, default to \"dig\"\n");
+                printk(KERN_ERR
+                       "ACPI 2.0 XSDT signature incorrect, default to \"dig\"\n");
                 return "dig";
         }
 
         if (!strcmp(hdr->oem_id, "HP")) {
                 return "hpzx1";
-        }
-        else if (!strcmp(hdr->oem_id, "SGI")) {
+        } else if (!strcmp(hdr->oem_id, "SGI")) {
                 return "sn2";
         }
 
@@ -131,7 +132,7 @@ acpi_get_sysname (void)
 #endif
 }
 
-#ifdef CONFIG_ACPI_BOOT
+#ifdef CONFIG_ACPI
 
 #define ACPI_MAX_PLATFORM_INTERRUPTS    256
 
@@ -146,8 +147,7 @@ enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_IOSAPIC;
  * Interrupt routing API for device drivers.  Provides interrupt vector for
  * a generic platform event.  Currently only CPEI is implemented.
  */
-int
-acpi_request_vector (u32 int_type)
+int acpi_request_vector(u32 int_type)
 {
         int vector = -1;
 
@@ -155,12 +155,12 @@ acpi_request_vector (u32 int_type)
                 /* corrected platform error interrupt */
                 vector = platform_intr_list[int_type];
         } else
-                printk(KERN_ERR "acpi_request_vector(): invalid interrupt type\n");
+                printk(KERN_ERR
+                       "acpi_request_vector(): invalid interrupt type\n");
         return vector;
 }
 
-char *
-__acpi_map_table (unsigned long phys_addr, unsigned long size)
+char *__acpi_map_table(unsigned long phys_addr, unsigned long size)
 {
         return __va(phys_addr);
 }
@@ -169,19 +169,18 @@ __acpi_map_table (unsigned long phys_addr, unsigned long size)
                             Boot-time Table Parsing
    -------------------------------------------------------------------------- */
 
-static int                      total_cpus __initdata;
-static int                      available_cpus __initdata;
-struct acpi_table_madt *        acpi_madt __initdata;
-static u8                       has_8259;
-
+static int total_cpus __initdata;
+static int available_cpus __initdata;
+struct acpi_table_madt *acpi_madt __initdata;
+static u8 has_8259;
 
 static int __init
-acpi_parse_lapic_addr_ovr (
-        acpi_table_entry_header *header, const unsigned long end)
+acpi_parse_lapic_addr_ovr(acpi_table_entry_header * header,
+                          const unsigned long end)
 {
         struct acpi_table_lapic_addr_ovr *lapic;
 
-        lapic = (struct acpi_table_lapic_addr_ovr *) header;
+        lapic = (struct acpi_table_lapic_addr_ovr *)header;
 
         if (BAD_MADT_ENTRY(lapic, end))
                 return -EINVAL;
@@ -193,22 +192,23 @@ acpi_parse_lapic_addr_ovr (
         return 0;
 }
 
-
 static int __init
-acpi_parse_lsapic (acpi_table_entry_header *header, const unsigned long end)
+acpi_parse_lsapic(acpi_table_entry_header * header, const unsigned long end)
 {
         struct acpi_table_lsapic *lsapic;
 
-        lsapic = (struct acpi_table_lsapic *) header;
+        lsapic = (struct acpi_table_lsapic *)header;
 
         if (BAD_MADT_ENTRY(lsapic, end))
                 return -EINVAL;
 
         if (lsapic->flags.enabled) {
 #ifdef CONFIG_SMP
-                smp_boot_data.cpu_phys_id[available_cpus] = (lsapic->id << 8) | lsapic->eid;
+                smp_boot_data.cpu_phys_id[available_cpus] =
+                    (lsapic->id << 8) | lsapic->eid;
 #endif
-                ia64_acpiid_to_sapicid[lsapic->acpi_id] = (lsapic->id << 8) | lsapic->eid;
+                ia64_acpiid_to_sapicid[lsapic->acpi_id] =
+                    (lsapic->id << 8) | lsapic->eid;
                 ++available_cpus;
         }
 
@@ -216,13 +216,12 @@ acpi_parse_lsapic (acpi_table_entry_header *header, const unsigned long end)
         return 0;
 }
 
-
 static int __init
-acpi_parse_lapic_nmi (acpi_table_entry_header *header, const unsigned long end)
+acpi_parse_lapic_nmi(acpi_table_entry_header * header, const unsigned long end)
 {
         struct acpi_table_lapic_nmi *lacpi_nmi;
 
-        lacpi_nmi = (struct acpi_table_lapic_nmi*) header;
+        lacpi_nmi = (struct acpi_table_lapic_nmi *)header;
 
         if (BAD_MADT_ENTRY(lacpi_nmi, end))
                 return -EINVAL;
@@ -231,13 +230,12 @@ acpi_parse_lapic_nmi (acpi_table_entry_header *header, const unsigned long end)
         return 0;
 }
 
-
 static int __init
-acpi_parse_iosapic (acpi_table_entry_header *header, const unsigned long end)
+acpi_parse_iosapic(acpi_table_entry_header * header, const unsigned long end)
 {
         struct acpi_table_iosapic *iosapic;
 
-        iosapic = (struct acpi_table_iosapic *) header;
+        iosapic = (struct acpi_table_iosapic *)header;
 
         if (BAD_MADT_ENTRY(iosapic, end))
                 return -EINVAL;
@@ -245,15 +243,14 @@ acpi_parse_iosapic (acpi_table_entry_header *header, const unsigned long end)
         return iosapic_init(iosapic->address, iosapic->global_irq_base);
 }
 
-
 static int __init
-acpi_parse_plat_int_src (
-        acpi_table_entry_header *header, const unsigned long end)
+acpi_parse_plat_int_src(acpi_table_entry_header * header,
+                        const unsigned long end)
 {
         struct acpi_table_plat_int_src *plintsrc;
         int vector;
 
-        plintsrc = (struct acpi_table_plat_int_src *) header;
+        plintsrc = (struct acpi_table_plat_int_src *)header;
 
         if (BAD_MADT_ENTRY(plintsrc, end))
                 return -EINVAL;
@@ -267,8 +264,12 @@ acpi_parse_plat_int_src (
                                                 plintsrc->iosapic_vector,
                                                 plintsrc->eid,
                                                 plintsrc->id,
-                                                (plintsrc->flags.polarity == 1) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
-                                                (plintsrc->flags.trigger == 1) ? IOSAPIC_EDGE : IOSAPIC_LEVEL);
+                                                (plintsrc->flags.polarity ==
+                                                 1) ? IOSAPIC_POL_HIGH :
+                                                IOSAPIC_POL_LOW,
+                                                (plintsrc->flags.trigger ==
+                                                 1) ? IOSAPIC_EDGE :
+                                                IOSAPIC_LEVEL);
 
         platform_intr_list[plintsrc->type] = vector;
         if (acpi_madt_rev > 1) {
@@ -283,7 +284,6 @@ acpi_parse_plat_int_src (
         return 0;
 }
 
-
 unsigned int can_cpei_retarget(void)
 {
         extern int cpe_vector;
@@ -322,29 +322,30 @@ unsigned int get_cpei_target_cpu(void)
 }
 
 static int __init
-acpi_parse_int_src_ovr (
-        acpi_table_entry_header *header, const unsigned long end)
+acpi_parse_int_src_ovr(acpi_table_entry_header * header,
+                       const unsigned long end)
 {
         struct acpi_table_int_src_ovr *p;
 
-        p = (struct acpi_table_int_src_ovr *) header;
+        p = (struct acpi_table_int_src_ovr *)header;
 
         if (BAD_MADT_ENTRY(p, end))
                 return -EINVAL;
 
         iosapic_override_isa_irq(p->bus_irq, p->global_irq,
-                                 (p->flags.polarity == 1) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
-                                 (p->flags.trigger == 1) ? IOSAPIC_EDGE : IOSAPIC_LEVEL);
+                                 (p->flags.polarity ==
+                                  1) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
+                                 (p->flags.trigger ==
+                                  1) ? IOSAPIC_EDGE : IOSAPIC_LEVEL);
         return 0;
 }
 
-
 static int __init
-acpi_parse_nmi_src (acpi_table_entry_header *header, const unsigned long end)
+acpi_parse_nmi_src(acpi_table_entry_header * header, const unsigned long end)
 {
         struct acpi_table_nmi_src *nmi_src;
 
-        nmi_src = (struct acpi_table_nmi_src*) header;
+        nmi_src = (struct acpi_table_nmi_src *)header;
 
         if (BAD_MADT_ENTRY(nmi_src, end))
                 return -EINVAL;
@@ -353,11 +354,9 @@ acpi_parse_nmi_src (acpi_table_entry_header *header, const unsigned long end)
         return 0;
 }
 
-static void __init
-acpi_madt_oem_check (char *oem_id, char *oem_table_id)
+static void __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
 {
-        if (!strncmp(oem_id, "IBM", 3) &&
-            (!strncmp(oem_table_id, "SERMOW", 6))) {
+        if (!strncmp(oem_id, "IBM", 3) && (!strncmp(oem_table_id, "SERMOW", 6))) {
 
                 /*
                  * Unfortunately ITC_DRIFT is not yet part of the
@@ -370,19 +369,18 @@ acpi_madt_oem_check (char *oem_id, char *oem_table_id)
         }
 }
 
-static int __init
-acpi_parse_madt (unsigned long phys_addr, unsigned long size)
+static int __init acpi_parse_madt(unsigned long phys_addr, unsigned long size)
 {
         if (!phys_addr || !size)
                 return -EINVAL;
 
-        acpi_madt = (struct acpi_table_madt *) __va(phys_addr);
+        acpi_madt = (struct acpi_table_madt *)__va(phys_addr);
 
         acpi_madt_rev = acpi_madt->header.revision;
 
         /* remember the value for reference after free_initmem() */
 #ifdef CONFIG_ITANIUM
-        has_8259 = 1; /* Firmware on old Itanium systems is broken */
+        has_8259 = 1;           /* Firmware on old Itanium systems is broken */
 #else
         has_8259 = acpi_madt->flags.pcat_compat;
 #endif
@@ -396,19 +394,18 @@ acpi_parse_madt (unsigned long phys_addr, unsigned long size)
         printk(KERN_INFO PREFIX "Local APIC address %p\n", ipi_base_addr);
 
         acpi_madt_oem_check(acpi_madt->header.oem_id,
-                acpi_madt->header.oem_table_id);
+                            acpi_madt->header.oem_table_id);
 
         return 0;
 }
 
-
 #ifdef CONFIG_ACPI_NUMA
 
 #undef SLIT_DEBUG
 
 #define PXM_FLAG_LEN ((MAX_PXM_DOMAINS + 1)/32)
 
-static int __initdata srat_num_cpus;                    /* number of cpus */
+static int __initdata srat_num_cpus;    /* number of cpus */
 static u32 __devinitdata pxm_flag[PXM_FLAG_LEN];
 #define pxm_bit_set(bit)        (set_bit(bit,(void *)pxm_flag))
 #define pxm_bit_test(bit)       (test_bit(bit,(void *)pxm_flag))
@@ -421,15 +418,15 @@ static struct acpi_table_slit __initdata *slit_table;
  * ACPI 2.0 SLIT (System Locality Information Table)
  * http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf
  */
-void __init
-acpi_numa_slit_init (struct acpi_table_slit *slit)
+void __init acpi_numa_slit_init(struct acpi_table_slit *slit)
 {
         u32 len;
 
         len = sizeof(struct acpi_table_header) + 8
-                + slit->localities * slit->localities;
+            + slit->localities * slit->localities;
         if (slit->header.length != len) {
-                printk(KERN_ERR "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n",
+                printk(KERN_ERR
+                       "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n",
                        len, slit->header.length);
                 memset(numa_slit, 10, sizeof(numa_slit));
                 return;
@@ -438,19 +435,20 @@ acpi_numa_slit_init (struct acpi_table_slit *slit)
 }
 
 void __init
-acpi_numa_processor_affinity_init (struct acpi_table_processor_affinity *pa)
+acpi_numa_processor_affinity_init(struct acpi_table_processor_affinity *pa)
 {
         /* record this node in proximity bitmap */
         pxm_bit_set(pa->proximity_domain);
 
-        node_cpuid[srat_num_cpus].phys_id = (pa->apic_id << 8) | (pa->lsapic_eid);
+        node_cpuid[srat_num_cpus].phys_id =
+            (pa->apic_id << 8) | (pa->lsapic_eid);
         /* nid should be overridden as logical node id later */
         node_cpuid[srat_num_cpus].nid = pa->proximity_domain;
         srat_num_cpus++;
 }
 
 void __init
-acpi_numa_memory_affinity_init (struct acpi_table_memory_affinity *ma)
+acpi_numa_memory_affinity_init(struct acpi_table_memory_affinity *ma)
 {
         unsigned long paddr, size;
         u8 pxm;
@@ -487,8 +485,7 @@ acpi_numa_memory_affinity_init (struct acpi_table_memory_affinity *ma)
         num_node_memblks++;
 }
 
-void __init
-acpi_numa_arch_fixup (void)
+void __init acpi_numa_arch_fixup(void)
 {
         int i, j, node_from, node_to;
 
@@ -534,21 +531,24 @@ acpi_numa_arch_fixup (void)
         for (i = 0; i < srat_num_cpus; i++)
                 node_cpuid[i].nid = pxm_to_nid_map[node_cpuid[i].nid];
 
-        printk(KERN_INFO "Number of logical nodes in system = %d\n", num_online_nodes());
-        printk(KERN_INFO "Number of memory chunks in system = %d\n", num_node_memblks);
+        printk(KERN_INFO "Number of logical nodes in system = %d\n",
+               num_online_nodes());
+        printk(KERN_INFO "Number of memory chunks in system = %d\n",
+               num_node_memblks);
 
-        if (!slit_table) return;
+        if (!slit_table)
+                return;
         memset(numa_slit, -1, sizeof(numa_slit));
-        for (i=0; i<slit_table->localities; i++) {
+        for (i = 0; i < slit_table->localities; i++) {
                 if (!pxm_bit_test(i))
                         continue;
                 node_from = pxm_to_nid_map[i];
-                for (j=0; j<slit_table->localities; j++) {
+                for (j = 0; j < slit_table->localities; j++) {
                         if (!pxm_bit_test(j))
                                 continue;
                         node_to = pxm_to_nid_map[j];
                         node_distance(node_from, node_to) =
-                                slit_table->entry[i*slit_table->localities + j];
+                            slit_table->entry[i * slit_table->localities + j];
                 }
         }
 
@@ -556,36 +556,43 @@ acpi_numa_arch_fixup (void)
         printk("ACPI 2.0 SLIT locality table:\n");
         for_each_online_node(i) {
                 for_each_online_node(j)
-                        printk("%03d ", node_distance(i,j));
+                    printk("%03d ", node_distance(i, j));
                 printk("\n");
         }
 #endif
 }
-#endif /* CONFIG_ACPI_NUMA */
+#endif                          /* CONFIG_ACPI_NUMA */
 
-unsigned int
-acpi_register_gsi (u32 gsi, int edge_level, int active_high_low)
+/*
+ * success: return IRQ number (>=0)
+ * failure: return < 0
+ */
+int acpi_register_gsi(u32 gsi, int edge_level, int active_high_low)
 {
         if (has_8259 && gsi < 16)
                 return isa_irq_to_vector(gsi);
 
         return iosapic_register_intr(gsi,
-                        (active_high_low == ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
-                        (edge_level == ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE : IOSAPIC_LEVEL);
+                                     (active_high_low ==
+                                      ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH :
+                                     IOSAPIC_POL_LOW,
+                                     (edge_level ==
+                                      ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE :
+                                     IOSAPIC_LEVEL);
 }
+
 EXPORT_SYMBOL(acpi_register_gsi);
 
 #ifdef CONFIG_ACPI_DEALLOCATE_IRQ
-void
-acpi_unregister_gsi (u32 gsi)
+void acpi_unregister_gsi(u32 gsi)
 {
         iosapic_unregister_intr(gsi);
 }
+
 EXPORT_SYMBOL(acpi_unregister_gsi);
-#endif /* CONFIG_ACPI_DEALLOCATE_IRQ */
+#endif                          /* CONFIG_ACPI_DEALLOCATE_IRQ */
 
-static int __init
-acpi_parse_fadt (unsigned long phys_addr, unsigned long size)
+static int __init acpi_parse_fadt(unsigned long phys_addr, unsigned long size)
 {
         struct acpi_table_header *fadt_header;
         struct fadt_descriptor_rev2 *fadt;
@@ -593,11 +600,11 @@ acpi_parse_fadt (unsigned long phys_addr, unsigned long size)
         if (!phys_addr || !size)
                 return -EINVAL;
 
-        fadt_header = (struct acpi_table_header *) __va(phys_addr);
+        fadt_header = (struct acpi_table_header *)__va(phys_addr);
         if (fadt_header->revision != 3)
-                return -ENODEV;         /* Only deal with ACPI 2.0 FADT */
+                return -ENODEV; /* Only deal with ACPI 2.0 FADT */
 
-        fadt = (struct fadt_descriptor_rev2 *) fadt_header;
+        fadt = (struct fadt_descriptor_rev2 *)fadt_header;
 
         if (!(fadt->iapc_boot_arch & BAF_8042_KEYBOARD_CONTROLLER))
                 acpi_kbd_controller_present = 0;
@@ -609,22 +616,19 @@ acpi_parse_fadt (unsigned long phys_addr, unsigned long size)
         return 0;
 }
 
-
-unsigned long __init
-acpi_find_rsdp (void)
+unsigned long __init acpi_find_rsdp(void)
 {
         unsigned long rsdp_phys = 0;
 
         if (efi.acpi20)
                 rsdp_phys = __pa(efi.acpi20);
         else if (efi.acpi)
-                printk(KERN_WARNING PREFIX "v1.0/r0.71 tables no longer supported\n");
+                printk(KERN_WARNING PREFIX
+                       "v1.0/r0.71 tables no longer supported\n");
         return rsdp_phys;
 }
 
-
-int __init
-acpi_boot_init (void)
+int __init acpi_boot_init(void)
 {
 
         /*
@@ -642,31 +646,43 @@ acpi_boot_init (void)
 
         /* Local APIC */
 
-        if (acpi_table_parse_madt(ACPI_MADT_LAPIC_ADDR_OVR, acpi_parse_lapic_addr_ovr, 0) < 0)
-                printk(KERN_ERR PREFIX "Error parsing LAPIC address override entry\n");
+        if (acpi_table_parse_madt
+            (ACPI_MADT_LAPIC_ADDR_OVR, acpi_parse_lapic_addr_ovr, 0) < 0)
+                printk(KERN_ERR PREFIX
+                       "Error parsing LAPIC address override entry\n");
 
-        if (acpi_table_parse_madt(ACPI_MADT_LSAPIC, acpi_parse_lsapic, NR_CPUS) < 1)
-                printk(KERN_ERR PREFIX "Error parsing MADT - no LAPIC entries\n");
+        if (acpi_table_parse_madt(ACPI_MADT_LSAPIC, acpi_parse_lsapic, NR_CPUS)
+            < 1)
+                printk(KERN_ERR PREFIX
+                       "Error parsing MADT - no LAPIC entries\n");
 
-        if (acpi_table_parse_madt(ACPI_MADT_LAPIC_NMI, acpi_parse_lapic_nmi, 0) < 0)
+        if (acpi_table_parse_madt(ACPI_MADT_LAPIC_NMI, acpi_parse_lapic_nmi, 0)
+            < 0)
                 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
 
         /* I/O APIC */
 
-        if (acpi_table_parse_madt(ACPI_MADT_IOSAPIC, acpi_parse_iosapic, NR_IOSAPICS) < 1)
-                printk(KERN_ERR PREFIX "Error parsing MADT - no IOSAPIC entries\n");
+        if (acpi_table_parse_madt
+            (ACPI_MADT_IOSAPIC, acpi_parse_iosapic, NR_IOSAPICS) < 1)
+                printk(KERN_ERR PREFIX
+                       "Error parsing MADT - no IOSAPIC entries\n");
 
         /* System-Level Interrupt Routing */
 
-        if (acpi_table_parse_madt(ACPI_MADT_PLAT_INT_SRC, acpi_parse_plat_int_src, ACPI_MAX_PLATFORM_INTERRUPTS) < 0)
-                printk(KERN_ERR PREFIX "Error parsing platform interrupt source entry\n");
+        if (acpi_table_parse_madt
+            (ACPI_MADT_PLAT_INT_SRC, acpi_parse_plat_int_src,
+             ACPI_MAX_PLATFORM_INTERRUPTS) < 0)
+                printk(KERN_ERR PREFIX
+                       "Error parsing platform interrupt source entry\n");
 
-        if (acpi_table_parse_madt(ACPI_MADT_INT_SRC_OVR, acpi_parse_int_src_ovr, 0) < 0)
-                printk(KERN_ERR PREFIX "Error parsing interrupt source overrides entry\n");
+        if (acpi_table_parse_madt
+            (ACPI_MADT_INT_SRC_OVR, acpi_parse_int_src_ovr, 0) < 0)
+                printk(KERN_ERR PREFIX
+                       "Error parsing interrupt source overrides entry\n");
 
         if (acpi_table_parse_madt(ACPI_MADT_NMI_SRC, acpi_parse_nmi_src, 0) < 0)
                 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
-  skip_madt:
+      skip_madt:
 
         /*
          * FADT says whether a legacy keyboard controller is present.
@@ -681,8 +697,9 @@ acpi_boot_init (void)
         if (available_cpus == 0) {
                 printk(KERN_INFO "ACPI: Found 0 CPUS; assuming 1\n");
                 printk(KERN_INFO "CPU 0 (0x%04x)", hard_smp_processor_id());
-                smp_boot_data.cpu_phys_id[available_cpus] = hard_smp_processor_id();
-                available_cpus = 1; /* We've got at least one of these, no? */
+                smp_boot_data.cpu_phys_id[available_cpus] =
+                    hard_smp_processor_id();
+                available_cpus = 1;     /* We've got at least one of these, no? */
         }
         smp_boot_data.cpu_count = available_cpus;
 
@@ -691,8 +708,10 @@ acpi_boot_init (void)
         if (srat_num_cpus == 0) {
                 int cpu, i = 1;
                 for (cpu = 0; cpu < smp_boot_data.cpu_count; cpu++)
-                        if (smp_boot_data.cpu_phys_id[cpu] != hard_smp_processor_id())
-                                node_cpuid[i++].phys_id = smp_boot_data.cpu_phys_id[cpu];
+                        if (smp_boot_data.cpu_phys_id[cpu] !=
+                            hard_smp_processor_id())
+                                node_cpuid[i++].phys_id =
+                                    smp_boot_data.cpu_phys_id[cpu];
         }
 # endif
 #endif
@@ -700,12 +719,12 @@ acpi_boot_init (void)
         build_cpu_to_node_map();
 #endif
         /* Make boot-up look pretty */
-        printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus, total_cpus);
+        printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus,
+               total_cpus);
         return 0;
 }
 
-int
-acpi_gsi_to_irq (u32 gsi, unsigned int *irq)
+int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
 {
         int vector;
 
@@ -726,11 +745,10 @@ acpi_gsi_to_irq (u32 gsi, unsigned int *irq)
  */
 #ifdef CONFIG_ACPI_HOTPLUG_CPU
 static
-int
-acpi_map_cpu2node(acpi_handle handle, int cpu, long physid)
+int acpi_map_cpu2node(acpi_handle handle, int cpu, long physid)
 {
 #ifdef CONFIG_ACPI_NUMA
-        int                     pxm_id;
+        int pxm_id;
 
         pxm_id = acpi_get_pxm(handle);
 
@@ -738,31 +756,28 @@ acpi_map_cpu2node(acpi_handle handle, int cpu, long physid)
          * Assuming that the container driver would have set the proximity
          * domain and would have initialized pxm_to_nid_map[pxm_id] && pxm_flag
          */
-        node_cpuid[cpu].nid = (pxm_id < 0) ? 0:
-                        pxm_to_nid_map[pxm_id];
+        node_cpuid[cpu].nid = (pxm_id < 0) ? 0 : pxm_to_nid_map[pxm_id];
 
-        node_cpuid[cpu].phys_id =  physid;
+        node_cpuid[cpu].phys_id = physid;
 #endif
-        return(0);
+        return (0);
 }
 
-
-int
-acpi_map_lsapic(acpi_handle handle, int *pcpu)
+int acpi_map_lsapic(acpi_handle handle, int *pcpu)
 {
-        struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
+        struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
         union acpi_object *obj;
         struct acpi_table_lsapic *lsapic;
         cpumask_t tmp_map;
         long physid;
         int cpu;
- 
+
         if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
                 return -EINVAL;
 
-        if (!buffer.length ||  !buffer.pointer)
+        if (!buffer.length || !buffer.pointer)
                 return -EINVAL;
- 
+
         obj = buffer.pointer;
         if (obj->type != ACPI_TYPE_BUFFER ||
             obj->buffer.length < sizeof(*lsapic)) {
@@ -778,7 +793,7 @@ acpi_map_lsapic(acpi_handle handle, int *pcpu)
                 return -EINVAL;
         }
 
-        physid = ((lsapic->id <<8) | (lsapic->eid));
+        physid = ((lsapic->id << 8) | (lsapic->eid));
 
         acpi_os_free(buffer.pointer);
         buffer.length = ACPI_ALLOCATE_BUFFER;
@@ -786,50 +801,49 @@ acpi_map_lsapic(acpi_handle handle, int *pcpu)
 
         cpus_complement(tmp_map, cpu_present_map);
         cpu = first_cpu(tmp_map);
-        if(cpu >= NR_CPUS)
+        if (cpu >= NR_CPUS)
                 return -EINVAL;
 
         acpi_map_cpu2node(handle, cpu, physid);
 
-        cpu_set(cpu, cpu_present_map);
+        cpu_set(cpu, cpu_present_map);
         ia64_cpu_to_sapicid[cpu] = physid;
         ia64_acpiid_to_sapicid[lsapic->acpi_id] = ia64_cpu_to_sapicid[cpu];
 
         *pcpu = cpu;
-        return(0);
+        return (0);
 }
-EXPORT_SYMBOL(acpi_map_lsapic);
 
+EXPORT_SYMBOL(acpi_map_lsapic);
 
-int
-acpi_unmap_lsapic(int cpu)
+int acpi_unmap_lsapic(int cpu)
 {
         int i;
 
-        for (i=0; i<MAX_SAPICS; i++) {
-                if (ia64_acpiid_to_sapicid[i] == ia64_cpu_to_sapicid[cpu]) {
-                        ia64_acpiid_to_sapicid[i] = -1;
-                        break;
-                }
-        }
+        for (i = 0; i < MAX_SAPICS; i++) {
+                if (ia64_acpiid_to_sapicid[i] == ia64_cpu_to_sapicid[cpu]) {
+                        ia64_acpiid_to_sapicid[i] = -1;
+                        break;
+                }
+        }
         ia64_cpu_to_sapicid[cpu] = -1;
-        cpu_clear(cpu,cpu_present_map);
+        cpu_clear(cpu, cpu_present_map);
 
 #ifdef CONFIG_ACPI_NUMA
         /* NUMA specific cleanup's */
 #endif
 
-        return(0);
+        return (0);
 }
+
 EXPORT_SYMBOL(acpi_unmap_lsapic);
-#endif /* CONFIG_ACPI_HOTPLUG_CPU */
- 
+#endif                          /* CONFIG_ACPI_HOTPLUG_CPU */
 
 #ifdef CONFIG_ACPI_NUMA
 acpi_status __devinit
-acpi_map_iosapic (acpi_handle handle, u32 depth, void *context, void **ret)
+acpi_map_iosapic(acpi_handle handle, u32 depth, void *context, void **ret)
 {
-        struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
+        struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
         union acpi_object *obj;
         struct acpi_table_iosapic *iosapic;
         unsigned int gsi_base;
@@ -878,10 +892,9 @@ acpi_map_iosapic (acpi_handle handle, u32 depth, void *context, void **ret)
         map_iosapic_to_node(gsi_base, node);
         return AE_OK;
 }
-#endif /* CONFIG_NUMA */
+#endif                          /* CONFIG_NUMA */
 
-int
-acpi_register_ioapic (acpi_handle handle, u64 phys_addr, u32 gsi_base)
+int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
 {
         int err;
 
@@ -890,17 +903,18 @@ acpi_register_ioapic (acpi_handle handle, u64 phys_addr, u32 gsi_base)
 
 #if CONFIG_ACPI_NUMA
         acpi_map_iosapic(handle, 0, NULL, NULL);
-#endif /* CONFIG_ACPI_NUMA */
+#endif                          /* CONFIG_ACPI_NUMA */
 
         return 0;
 }
+
 EXPORT_SYMBOL(acpi_register_ioapic);
 
-int
-acpi_unregister_ioapic (acpi_handle handle, u32 gsi_base)
+int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
 {
         return iosapic_remove(gsi_base);
 }
+
 EXPORT_SYMBOL(acpi_unregister_ioapic);
 
-#endif /* CONFIG_ACPI_BOOT */
+#endif                          /* CONFIG_ACPI */
diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c
index 7936b62f7a2e..a13df592ebf7 100644
--- a/arch/ia64/kernel/iosapic.c
+++ b/arch/ia64/kernel/iosapic.c
@@ -561,7 +561,7 @@ static inline int vector_is_shared (int vector)
         return (iosapic_intr_info[vector].count > 1);
 }
 
-static void
+static int
 register_intr (unsigned int gsi, int vector, unsigned char delivery,
                unsigned long polarity, unsigned long trigger)
 {
@@ -576,7 +576,7 @@ register_intr (unsigned int gsi, int vector, unsigned char delivery,
         index = find_iosapic(gsi);
         if (index < 0) {
                 printk(KERN_WARNING "%s: No IOSAPIC for GSI %u\n", __FUNCTION__, gsi);
-                return;
+                return -ENODEV;
         }
 
         iosapic_address = iosapic_lists[index].addr;
@@ -587,7 +587,7 @@ register_intr (unsigned int gsi, int vector, unsigned char delivery,
                 rte = iosapic_alloc_rte();
                 if (!rte) {
                         printk(KERN_WARNING "%s: cannot allocate memory\n", __FUNCTION__);
-                        return;
+                        return -ENOMEM;
                 }
 
                 rte_index = gsi - gsi_base;
@@ -603,7 +603,7 @@ register_intr (unsigned int gsi, int vector, unsigned char delivery,
                 struct iosapic_intr_info *info = &iosapic_intr_info[vector];
                 if (info->trigger != trigger || info->polarity != polarity) {
                         printk (KERN_WARNING "%s: cannot override the interrupt\n", __FUNCTION__);
-                        return;
+                        return -EINVAL;
                 }
         }
 
@@ -623,6 +623,7 @@ register_intr (unsigned int gsi, int vector, unsigned char delivery,
                                __FUNCTION__, vector, idesc->handler->typename, irq_type->typename);
                 idesc->handler = irq_type;
         }
+        return 0;
 }
 
 static unsigned int
@@ -710,7 +711,7 @@ int
 iosapic_register_intr (unsigned int gsi,
                        unsigned long polarity, unsigned long trigger)
 {
-        int vector, mask = 1;
+        int vector, mask = 1, err;
         unsigned int dest;
         unsigned long flags;
         struct iosapic_rte_info *rte;
@@ -737,8 +738,8 @@ again:
         vector = assign_irq_vector(AUTO_ASSIGN);
         if (vector < 0) {
                 vector = iosapic_find_sharable_vector(trigger, polarity);
-                if (vector < 0)
-                        panic("%s: out of interrupt vectors!\n", __FUNCTION__);
+                if (vector < 0)
+                        return -ENOSPC;
         }
 
         spin_lock_irqsave(&irq_descp(vector)->lock, flags);
@@ -753,8 +754,13 @@ again:
                 }
 
                 dest = get_target_cpu(gsi, vector);
-                register_intr(gsi, vector, IOSAPIC_LOWEST_PRIORITY,
+                err = register_intr(gsi, vector, IOSAPIC_LOWEST_PRIORITY,
                               polarity, trigger);
+                if (err < 0) {
+                        spin_unlock(&iosapic_lock);
+                        spin_unlock_irqrestore(&irq_descp(vector)->lock, flags);
+                        return err;
+                }
 
                 /*
                  * If the vector is shared and already unmasked for
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 84f89da7c640..1f5c26dbe705 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -384,7 +384,7 @@ setup_arch (char **cmdline_p)
         if (early_console_setup(*cmdline_p) == 0)
                 mark_bsp_online();
 
-#ifdef CONFIG_ACPI_BOOT
+#ifdef CONFIG_ACPI
         /* Initialize the ACPI boot-time table parser */
         acpi_table_init();
 # ifdef CONFIG_ACPI_NUMA
@@ -420,7 +420,7 @@ setup_arch (char **cmdline_p)
 
         cpu_init();     /* initialize the bootstrap CPU */
 
-#ifdef CONFIG_ACPI_BOOT
+#ifdef CONFIG_ACPI
         acpi_boot_init();
 #endif
 
diff --git a/arch/ia64/kernel/topology.c b/arch/ia64/kernel/topology.c
index 92ff46ad21e2..706b7734e191 100644
--- a/arch/ia64/kernel/topology.c
+++ b/arch/ia64/kernel/topology.c
@@ -36,7 +36,7 @@ int arch_register_cpu(int num)
         parent = &sysfs_nodes[cpu_to_node(num)];
 #endif /* CONFIG_NUMA */
 
-#ifdef CONFIG_ACPI_BOOT
+#ifdef CONFIG_ACPI
         /*
          * If CPEI cannot be re-targetted, and this is
          * CPEI target, then dont create the control file
diff --git a/arch/ia64/sn/kernel/irq.c b/arch/ia64/sn/kernel/irq.c
index 84d276a14ecb..392bf8a072b6 100644
--- a/arch/ia64/sn/kernel/irq.c
+++ b/arch/ia64/sn/kernel/irq.c
@@ -23,7 +23,7 @@ static void force_interrupt(int irq);
 static void register_intr_pda(struct sn_irq_info *sn_irq_info);
 static void unregister_intr_pda(struct sn_irq_info *sn_irq_info);
 
-extern int sn_force_interrupt_flag;
+int sn_force_interrupt_flag = 1;
 extern int sn_ioif_inited;
 static struct list_head **sn_irq_lh;
 static spinlock_t sn_irq_info_lock = SPIN_LOCK_UNLOCKED; /* non-IRQ lock */
diff --git a/arch/ia64/sn/kernel/sn2/sn_proc_fs.c b/arch/ia64/sn/kernel/sn2/sn_proc_fs.c
index 6a80fca807b9..266a3a84c01d 100644
--- a/arch/ia64/sn/kernel/sn2/sn_proc_fs.c
+++ b/arch/ia64/sn/kernel/sn2/sn_proc_fs.c
@@ -52,7 +52,7 @@ static int licenseID_open(struct inode *inode, struct file *file)
  * the bridge chip.  The hardware will then send an interrupt message if the
  * interrupt line is active.  This mimics a level sensitive interrupt.
  */
-int sn_force_interrupt_flag = 1;
+extern int sn_force_interrupt_flag;
 
 static int sn_force_interrupt_show(struct seq_file *s, void *p)
 {