Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (47 commits) ACPI: pci_link: remove acpi_irq_balance_set() interface fujitsu-laptop: Add DMI callback for Lifebook S6420 ACPI: EC: Don't do transaction from GPE handler in poll mode. ACPI: EC: lower interrupt storm treshold ACPICA: Use spinlock for acpi_{en|dis}able_gpe ACPI: EC: restart failed command ACPI: EC: wait for last write gpe ACPI: EC: make kernel messages more useful when GPE storm is detected ACPI: EC: revert msleep patch thinkpad_acpi: fingers off backlight if video.ko is serving this functionality sony-laptop: fingers off backlight if video.ko is serving this functionality msi-laptop: fingers off backlight if video.ko is serving this functionality fujitsu-laptop: fingers off backlight if video.ko is serving this functionality eeepc-laptop: fingers off backlight if video.ko is serving this functionality compal: fingers off backlight if video.ko is serving this functionality asus-acpi: fingers off backlight if video.ko is serving this functionality Acer-WMI: fingers off backlight if video.ko is serving this functionality ACPI video: if no ACPI backlight support, use vendor drivers ACPI: video: Ignore devices that aren't present in hardware Delete an unwanted return statement at evgpe.c ...
author: Linus Torvalds <torvalds@linux-foundation.org> 2008-11-12 13:24:46 -0500
committer: Linus Torvalds <torvalds@linux-foundation.org> 2008-11-12 13:24:46 -0500
commit: 08c1184fa2b785f23453b8cbb43f86b409cde3a6 (patch)
tree: f3d529d72ecdbf3f6ee1d245a6d9b099408fc259 /drivers
parent: f21f237cf55494c3a4209de323281a3b0528da10 (diff)
parent: d1876ba4dead6ace7e9fbf16f83397e6486d0dfe (diff)
45 files changed, 670 insertions, 316 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index f4f632917509..b0243fd55ac0 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -312,9 +312,13 @@ config ACPI_DEBUG
        bool "Debug Statements"
        default n
        help
-          The ACPI driver can optionally report errors with a great deal
+          The ACPI subsystem can produce debug output.  Saying Y enables this
-          of verbosity. Saying Y enables these statements. This will increase
+          output and increases the kernel size by around 50K.
-          your kernel size by around 50K.
+          Use the acpi.debug_layer and acpi.debug_level kernel command-line
+          parameters documented in Documentation/acpi/debug.txt and
+          Documentation/kernel-parameters.txt to control the type and
+          amount of debug output.
 config ACPI_DEBUG_FUNC_TRACE
        bool "Additionally enable ACPI function tracing"
@@ -324,14 +328,6 @@ config ACPI_DEBUG_FUNC_TRACE
          ACPI Debug Statements slow down ACPI processing. Function trace
          is about half of the penalty and is rarely useful.
-config ACPI_EC
-        bool
-        default y
-        help
-          This driver is required on some systems for the proper operation of
-          the battery and thermal drivers.  If you are compiling for a 
-          mobile system, say Y.
 config ACPI_PCI_SLOT
        tristate "PCI slot detection driver"
        default n
@@ -341,10 +337,6 @@ config ACPI_PCI_SLOT
          help you correlate PCI bus addresses with the physical geography
          of your slots. If you are unsure, say N.
-config ACPI_POWER
-        bool
-        default y
 config ACPI_SYSTEM
        bool
        default y
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index d91c027ece8f..3c0c93300f12 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -39,19 +39,23 @@ obj-y				+= sleep/
 obj-y                           += bus.o glue.o
 obj-y                           += scan.o
 # Keep EC driver first. Initialization of others depend on it.
-obj-$(CONFIG_ACPI_EC)           += ec.o
+obj-y                           += ec.o
 obj-$(CONFIG_ACPI_AC)           += ac.o
 obj-$(CONFIG_ACPI_BATTERY)      += battery.o
 obj-$(CONFIG_ACPI_BUTTON)       += button.o
 obj-$(CONFIG_ACPI_FAN)          += fan.o
 obj-$(CONFIG_ACPI_DOCK)         += dock.o
 obj-$(CONFIG_ACPI_VIDEO)        += video.o
+ifdef CONFIG_ACPI_VIDEO
+obj-y                           += video_detect.o
+endif
 obj-y                           += pci_root.o pci_link.o pci_irq.o pci_bind.o
 obj-$(CONFIG_ACPI_PCI_SLOT)     += pci_slot.o
 obj-$(CONFIG_ACPI_PROCESSOR)    += processor.o
 obj-$(CONFIG_ACPI_CONTAINER)    += container.o
 obj-$(CONFIG_ACPI_THERMAL)      += thermal.o
-obj-$(CONFIG_ACPI_POWER)        += power.o
+obj-y                           += power.o
 obj-$(CONFIG_ACPI_SYSTEM)       += system.o event.o
 obj-$(CONFIG_ACPI_DEBUG)        += debug.o
 obj-$(CONFIG_ACPI_NUMA)         += numa.o
diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
index d72a1b6c8a94..9b917dac7732 100644
--- a/drivers/acpi/ac.c
+++ b/drivers/acpi/ac.c
@@ -37,7 +37,6 @@
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
-#define ACPI_AC_COMPONENT               0x00020000
 #define ACPI_AC_CLASS                   "ac_adapter"
 #define ACPI_AC_DEVICE_NAME             "AC Adapter"
 #define ACPI_AC_FILE_STATE              "state"
@@ -242,7 +241,7 @@ static void acpi_ac_notify(acpi_handle handle, u32 event, void *data)
                acpi_ac_get_state(ac);
                acpi_bus_generate_proc_event(device, event, (u32) ac->state);
                acpi_bus_generate_netlink_event(device->pnp.device_class,
-                                                  device->dev.bus_id, event,
+                                                  dev_name(&device->dev), event,
                                                  (u32) ac->state);
 #ifdef CONFIG_ACPI_SYSFS_POWER
                kobject_uevent(&ac->charger.dev->kobj, KOBJ_CHANGE);
diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index 71d21c51c45f..63a17b55b39b 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -32,7 +32,6 @@
 #include <linux/memory_hotplug.h>
 #include <acpi/acpi_drivers.h>
-#define ACPI_MEMORY_DEVICE_COMPONENT            0x08000000UL
 #define ACPI_MEMORY_DEVICE_CLASS                "memory"
 #define ACPI_MEMORY_DEVICE_HID                  "PNP0C80"
 #define ACPI_MEMORY_DEVICE_NAME                 "Hotplug Mem Device"
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index b2133e89ad9a..1423b0c0cd2e 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -46,7 +46,6 @@
 #define ACPI_BATTERY_VALUE_UNKNOWN 0xFFFFFFFF
-#define ACPI_BATTERY_COMPONENT          0x00040000
 #define ACPI_BATTERY_CLASS              "battery"
 #define ACPI_BATTERY_DEVICE_NAME        "Battery"
 #define ACPI_BATTERY_NOTIFY_STATUS      0x80
@@ -782,7 +781,7 @@ static void acpi_battery_notify(acpi_handle handle, u32 event, void *data)
        acpi_bus_generate_proc_event(device, event,
                                     acpi_battery_present(battery));
        acpi_bus_generate_netlink_event(device->pnp.device_class,
-                                        device->dev.bus_id, event,
+                                        dev_name(&device->dev), event,
                                        acpi_battery_present(battery));
 #ifdef CONFIG_ACPI_SYSFS_POWER
        /* acpi_batter_update could remove power_supply object */
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index c797c6473f31..7edf6d913c13 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -688,6 +688,14 @@ void __init acpi_early_init(void)
        if (acpi_disabled)
                return;
+        /*
+         * ACPI CA initializes acpi_dbg_level to non-zero, which means
+         * we get debug output merely by turning on CONFIG_ACPI_DEBUG.
+         * Turn it off so we don't get output unless the user specifies
+         * acpi.debug_level.
+         */
+        acpi_dbg_level = 0;
        printk(KERN_INFO PREFIX "Core revision %08x\n", ACPI_CA_VERSION);
        /* enable workarounds, unless strict ACPI spec. compliance */
@@ -774,7 +782,7 @@ static int __init acpi_bus_init(void)
                       "Unable to initialize ACPI OS objects\n");
                goto error1;
        }
-#ifdef CONFIG_ACPI_EC
        /*
         * ACPI 2.0 requires the EC driver to be loaded and work before
         * the EC device is found in the namespace (i.e. before acpi_initialize_objects()
@@ -785,7 +793,6 @@ static int __init acpi_bus_init(void)
         */
        status = acpi_ec_ecdt_probe();
        /* Ignore result. Not having an ECDT is not fatal. */
-#endif
        status = acpi_initialize_objects(ACPI_FULL_INITIALIZATION);
        if (ACPI_FAILURE(status)) {
diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index cb046c3fc3f2..171fd914f435 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -33,7 +33,6 @@
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
-#define ACPI_BUTTON_COMPONENT           0x00080000
 #define ACPI_BUTTON_CLASS               "button"
 #define ACPI_BUTTON_FILE_INFO           "info"
 #define ACPI_BUTTON_FILE_STATE          "state"
@@ -479,7 +478,7 @@ static int acpi_button_add(struct acpi_device *device)
                                  device->wakeup.gpe_number,
                                  ACPI_GPE_TYPE_WAKE_RUN);
                acpi_enable_gpe(device->wakeup.gpe_device,
-                                device->wakeup.gpe_number, ACPI_NOT_ISR);
+                                device->wakeup.gpe_number);
                device->wakeup.state.enabled = 1;
        }
diff --git a/drivers/acpi/cm_sbs.c b/drivers/acpi/cm_sbs.c
index 4441e84b28a9..307963bd1043 100644
--- a/drivers/acpi/cm_sbs.c
+++ b/drivers/acpi/cm_sbs.c
@@ -34,7 +34,6 @@
 ACPI_MODULE_NAME("cm_sbs");
 #define ACPI_AC_CLASS           "ac_adapter"
 #define ACPI_BATTERY_CLASS      "battery"
-#define ACPI_SBS_COMPONENT      0x00080000
 #define _COMPONENT              ACPI_SBS_COMPONENT
 static struct proc_dir_entry *acpi_ac_dir;
 static struct proc_dir_entry *acpi_battery_dir;
@@ -105,9 +104,3 @@ void acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir_param)
        return;
 }
 EXPORT_SYMBOL(acpi_unlock_battery_dir);
-static int __init acpi_cm_sbs_init(void)
-{
-        return 0;
-}
-subsys_initcall(acpi_cm_sbs_init);
diff --git a/drivers/acpi/container.c b/drivers/acpi/container.c
index 134818b265a9..17020c12623c 100644
--- a/drivers/acpi/container.c
+++ b/drivers/acpi/container.c
@@ -41,7 +41,6 @@
 #define INSTALL_NOTIFY_HANDLER          1
 #define UNINSTALL_NOTIFY_HANDLER        2
-#define ACPI_CONTAINER_COMPONENT        0x01000000
 #define _COMPONENT                      ACPI_CONTAINER_COMPONENT
 ACPI_MODULE_NAME("container");
diff --git a/drivers/acpi/debug.c b/drivers/acpi/debug.c
index abf36b4b1d1d..c48396892008 100644
--- a/drivers/acpi/debug.c
+++ b/drivers/acpi/debug.c
@@ -44,6 +44,21 @@ static const struct acpi_dlayer acpi_debug_layers[] = {
        ACPI_DEBUG_INIT(ACPI_CA_DISASSEMBLER),
        ACPI_DEBUG_INIT(ACPI_COMPILER),
        ACPI_DEBUG_INIT(ACPI_TOOLS),
+        ACPI_DEBUG_INIT(ACPI_BUS_COMPONENT),
+        ACPI_DEBUG_INIT(ACPI_AC_COMPONENT),
+        ACPI_DEBUG_INIT(ACPI_BATTERY_COMPONENT),
+        ACPI_DEBUG_INIT(ACPI_BUTTON_COMPONENT),
+        ACPI_DEBUG_INIT(ACPI_SBS_COMPONENT),
+        ACPI_DEBUG_INIT(ACPI_FAN_COMPONENT),
+        ACPI_DEBUG_INIT(ACPI_PCI_COMPONENT),
+        ACPI_DEBUG_INIT(ACPI_POWER_COMPONENT),
+        ACPI_DEBUG_INIT(ACPI_CONTAINER_COMPONENT),
+        ACPI_DEBUG_INIT(ACPI_SYSTEM_COMPONENT),
+        ACPI_DEBUG_INIT(ACPI_THERMAL_COMPONENT),
+        ACPI_DEBUG_INIT(ACPI_MEMORY_DEVICE_COMPONENT),
+        ACPI_DEBUG_INIT(ACPI_VIDEO_COMPONENT),
+        ACPI_DEBUG_INIT(ACPI_PROCESSOR_COMPONENT),
 };
 static const struct acpi_dlevel acpi_debug_levels[] = {
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index ef42316f89f5..cf41f9fc24a7 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -70,7 +70,7 @@ enum ec_command {
 #define ACPI_EC_UDELAY_GLK      1000    /* Wait 1ms max. to get global lock */
 #define ACPI_EC_UDELAY          100     /* Wait 100us before polling EC again */
-#define ACPI_EC_STORM_THRESHOLD 20      /* number of false interrupts
+#define ACPI_EC_STORM_THRESHOLD 8       /* number of false interrupts
                                           per one transaction */
 enum {
@@ -100,8 +100,11 @@ struct transaction {
        u8 *rdata;
        unsigned short irq_count;
        u8 command;
+        u8 wi;
+        u8 ri;
        u8 wlen;
        u8 rlen;
+        bool done;
 };
 static struct acpi_ec {
@@ -178,34 +181,45 @@ static int ec_transaction_done(struct acpi_ec *ec)
        unsigned long flags;
        int ret = 0;
        spin_lock_irqsave(&ec->curr_lock, flags);
-        if (!ec->curr || (!ec->curr->wlen && !ec->curr->rlen))
+        if (!ec->curr || ec->curr->done)
                ret = 1;
        spin_unlock_irqrestore(&ec->curr_lock, flags);
        return ret;
 }
+static void start_transaction(struct acpi_ec *ec)
+{
+        ec->curr->irq_count = ec->curr->wi = ec->curr->ri = 0;
+        ec->curr->done = false;
+        acpi_ec_write_cmd(ec, ec->curr->command);
+}
 static void gpe_transaction(struct acpi_ec *ec, u8 status)
 {
        unsigned long flags;
        spin_lock_irqsave(&ec->curr_lock, flags);
        if (!ec->curr)
                goto unlock;
-        if (ec->curr->wlen > 0) {
+        if (ec->curr->wlen > ec->curr->wi) {
-                if ((status & ACPI_EC_FLAG_IBF) == 0) {
+                if ((status & ACPI_EC_FLAG_IBF) == 0)
-                        acpi_ec_write_data(ec, *(ec->curr->wdata++));
+                        acpi_ec_write_data(ec,
-                        --ec->curr->wlen;
+                                ec->curr->wdata[ec->curr->wi++]);
-                } else
+                else
-                        /* false interrupt, state didn't change */
+                        goto err;
-                        ++ec->curr->irq_count;
+        } else if (ec->curr->rlen > ec->curr->ri) {
-        } else if (ec->curr->rlen > 0) {
                if ((status & ACPI_EC_FLAG_OBF) == 1) {
-                        *(ec->curr->rdata++) = acpi_ec_read_data(ec);
+                        ec->curr->rdata[ec->curr->ri++] = acpi_ec_read_data(ec);
-                        --ec->curr->rlen;
+                        if (ec->curr->rlen == ec->curr->ri)
+                                ec->curr->done = true;
                } else
-                        /* false interrupt, state didn't change */
+                        goto err;
-                        ++ec->curr->irq_count;
+        } else if (ec->curr->wlen == ec->curr->wi &&
-        }
+                   (status & ACPI_EC_FLAG_IBF) == 0)
+                ec->curr->done = true;
+        goto unlock;
+err:
+        /* false interrupt, state didn't change */
+        ++ec->curr->irq_count;
 unlock:
        spin_unlock_irqrestore(&ec->curr_lock, flags);
 }
@@ -215,6 +229,15 @@ static int acpi_ec_wait(struct acpi_ec *ec)
        if (wait_event_timeout(ec->wait, ec_transaction_done(ec),
                               msecs_to_jiffies(ACPI_EC_DELAY)))
                return 0;
+        /* try restart command if we get any false interrupts */
+        if (ec->curr->irq_count &&
+            (acpi_ec_read_status(ec) & ACPI_EC_FLAG_IBF) == 0) {
+                pr_debug(PREFIX "controller reset, restart transaction\n");
+                start_transaction(ec);
+                if (wait_event_timeout(ec->wait, ec_transaction_done(ec),
+                                        msecs_to_jiffies(ACPI_EC_DELAY)))
+                        return 0;
+        }
        /* missing GPEs, switch back to poll mode */
        if (printk_ratelimit())
                pr_info(PREFIX "missing confirmations, "
@@ -239,10 +262,10 @@ static int ec_check_sci(struct acpi_ec *ec, u8 state)
 static int ec_poll(struct acpi_ec *ec)
 {
        unsigned long delay = jiffies + msecs_to_jiffies(ACPI_EC_DELAY);
-        msleep(1);
+        udelay(ACPI_EC_UDELAY);
        while (time_before(jiffies, delay)) {
                gpe_transaction(ec, acpi_ec_read_status(ec));
-                msleep(1);
+                udelay(ACPI_EC_UDELAY);
                if (ec_transaction_done(ec))
                        return 0;
        }
@@ -259,14 +282,13 @@ static int acpi_ec_transaction_unlocked(struct acpi_ec *ec,
        /* disable GPE during transaction if storm is detected */
        if (test_bit(EC_FLAGS_GPE_STORM, &ec->flags)) {
                clear_bit(EC_FLAGS_GPE_MODE, &ec->flags);
-                acpi_disable_gpe(NULL, ec->gpe, ACPI_NOT_ISR);
+                acpi_disable_gpe(NULL, ec->gpe);
        }
        /* start transaction */
        spin_lock_irqsave(&ec->curr_lock, tmp);
        /* following two actions should be kept atomic */
-        t->irq_count = 0;
        ec->curr = t;
-        acpi_ec_write_cmd(ec, ec->curr->command);
+        start_transaction(ec);
        if (ec->curr->command == ACPI_EC_COMMAND_QUERY)
                clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags);
        spin_unlock_irqrestore(&ec->curr_lock, tmp);
@@ -283,10 +305,11 @@ static int acpi_ec_transaction_unlocked(struct acpi_ec *ec,
                /* check if we received SCI during transaction */
                ec_check_sci(ec, acpi_ec_read_status(ec));
                /* it is safe to enable GPE outside of transaction */
-                acpi_enable_gpe(NULL, ec->gpe, ACPI_NOT_ISR);
+                acpi_enable_gpe(NULL, ec->gpe);
        } else if (test_bit(EC_FLAGS_GPE_MODE, &ec->flags) &&
                   t->irq_count > ACPI_EC_STORM_THRESHOLD) {
-                pr_debug(PREFIX "GPE storm detected\n");
+                pr_info(PREFIX "GPE storm detected, "
+                        "transactions will use polling mode\n");
                set_bit(EC_FLAGS_GPE_STORM, &ec->flags);
        }
        return ret;
@@ -558,17 +581,26 @@ static u32 acpi_ec_gpe_handler(void *data)
        pr_debug(PREFIX "~~~> interrupt\n");
        status = acpi_ec_read_status(ec);
-        gpe_transaction(ec, status);
+        if (test_bit(EC_FLAGS_GPE_MODE, &ec->flags)) {
-        if (ec_transaction_done(ec) && (status & ACPI_EC_FLAG_IBF) == 0)
+                gpe_transaction(ec, status);
-                wake_up(&ec->wait);
+                if (ec_transaction_done(ec) &&
+                    (status & ACPI_EC_FLAG_IBF) == 0)
+                        wake_up(&ec->wait);
+        }
        ec_check_sci(ec, status);
        if (!test_bit(EC_FLAGS_GPE_MODE, &ec->flags) &&
            !test_bit(EC_FLAGS_NO_GPE, &ec->flags)) {
                /* this is non-query, must be confirmation */
-                if (printk_ratelimit())
+                if (!test_bit(EC_FLAGS_GPE_STORM, &ec->flags)) {
-                        pr_info(PREFIX "non-query interrupt received,"
+                        if (printk_ratelimit())
+                                pr_info(PREFIX "non-query interrupt received,"
+                                        " switching to interrupt mode\n");
+                } else {
+                        /* hush, STORM switches the mode every transaction */
+                        pr_debug(PREFIX "non-query interrupt received,"
                                " switching to interrupt mode\n");
+                }
                set_bit(EC_FLAGS_GPE_MODE, &ec->flags);
        }
        return ACPI_INTERRUPT_HANDLED;
@@ -736,7 +768,7 @@ static acpi_status
 ec_parse_device(acpi_handle handle, u32 Level, void *context, void **retval)
 {
        acpi_status status;
-        unsigned long long tmp;
+        unsigned long long tmp = 0;
        struct acpi_ec *ec = context;
        status = acpi_walk_resources(handle, METHOD_NAME__CRS,
@@ -751,6 +783,7 @@ ec_parse_device(acpi_handle handle, u32 Level, void *context, void **retval)
                return status;
        ec->gpe = tmp;
        /* Use the global lock for all EC transactions? */
+        tmp = 0;
        acpi_evaluate_integer(handle, "_GLK", NULL, &tmp);
        ec->global_lock = tmp;
        ec->handle = handle;
@@ -868,7 +901,7 @@ static int ec_install_handlers(struct acpi_ec *ec)
        if (ACPI_FAILURE(status))
                return -ENODEV;
        acpi_set_gpe_type(NULL, ec->gpe, ACPI_GPE_TYPE_RUNTIME);
-        acpi_enable_gpe(NULL, ec->gpe, ACPI_NOT_ISR);
+        acpi_enable_gpe(NULL, ec->gpe);
        status = acpi_install_address_space_handler(ec->handle,
                                                    ACPI_ADR_SPACE_EC,
                                                    &acpi_ec_space_handler,
@@ -1007,7 +1040,7 @@ static int acpi_ec_suspend(struct acpi_device *device, pm_message_t state)
        /* Stop using GPE */
        set_bit(EC_FLAGS_NO_GPE, &ec->flags);
        clear_bit(EC_FLAGS_GPE_MODE, &ec->flags);
-        acpi_disable_gpe(NULL, ec->gpe, ACPI_NOT_ISR);
+        acpi_disable_gpe(NULL, ec->gpe);
        return 0;
 }
@@ -1016,7 +1049,7 @@ static int acpi_ec_resume(struct acpi_device *device)
        struct acpi_ec *ec = acpi_driver_data(device);
        /* Enable use of GPE back */
        clear_bit(EC_FLAGS_NO_GPE, &ec->flags);
-        acpi_enable_gpe(NULL, ec->gpe, ACPI_NOT_ISR);
+        acpi_enable_gpe(NULL, ec->gpe);
        return 0;
 }
diff --git a/drivers/acpi/events/evgpe.c b/drivers/acpi/events/evgpe.c
index c5e53aae86f7..f45c74fe745e 100644
--- a/drivers/acpi/events/evgpe.c
+++ b/drivers/acpi/events/evgpe.c
@@ -289,8 +289,6 @@ acpi_status acpi_ev_disable_gpe(struct acpi_gpe_event_info *gpe_event_info)
         */
        status = acpi_hw_low_disable_gpe(gpe_event_info);
        return_ACPI_STATUS(status);
-        return_ACPI_STATUS(AE_OK);
 }
 /*******************************************************************************
diff --git a/drivers/acpi/events/evxfevnt.c b/drivers/acpi/events/evxfevnt.c
index 73bfd6bf962f..41554f736b68 100644
--- a/drivers/acpi/events/evxfevnt.c
+++ b/drivers/acpi/events/evxfevnt.c
@@ -248,21 +248,15 @@ ACPI_EXPORT_SYMBOL(acpi_set_gpe_type)
 * DESCRIPTION: Enable an ACPI event (general purpose)
 *
 ******************************************************************************/
-acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number, u32 flags)
+acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number)
 {
        acpi_status status = AE_OK;
+        acpi_cpu_flags flags;
        struct acpi_gpe_event_info *gpe_event_info;
        ACPI_FUNCTION_TRACE(acpi_enable_gpe);
-        /* Use semaphore lock if not executing at interrupt level */
+        flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
-        if (flags & ACPI_NOT_ISR) {
-                status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
-                if (ACPI_FAILURE(status)) {
-                        return_ACPI_STATUS(status);
-                }
-        }
        /* Ensure that we have a valid GPE number */
@@ -277,9 +271,7 @@ acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number, u32 flags)
        status = acpi_ev_enable_gpe(gpe_event_info, TRUE);
      unlock_and_exit:
-        if (flags & ACPI_NOT_ISR) {
+        acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
-                (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
-        }
        return_ACPI_STATUS(status);
 }
@@ -299,22 +291,15 @@ ACPI_EXPORT_SYMBOL(acpi_enable_gpe)
 * DESCRIPTION: Disable an ACPI event (general purpose)
 *
 ******************************************************************************/
-acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number, u32 flags)
+acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number)
 {
        acpi_status status = AE_OK;
+        acpi_cpu_flags flags;
        struct acpi_gpe_event_info *gpe_event_info;
        ACPI_FUNCTION_TRACE(acpi_disable_gpe);
-        /* Use semaphore lock if not executing at interrupt level */
+        flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
-        if (flags & ACPI_NOT_ISR) {
-                status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
-                if (ACPI_FAILURE(status)) {
-                        return_ACPI_STATUS(status);
-                }
-        }
        /* Ensure that we have a valid GPE number */
        gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number);
@@ -325,10 +310,8 @@ acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number, u32 flags)
        status = acpi_ev_disable_gpe(gpe_event_info);
-      unlock_and_exit:
+unlock_and_exit:
-        if (flags & ACPI_NOT_ISR) {
+        acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
-                (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
-        }
        return_ACPI_STATUS(status);
 }
@@ -521,6 +504,9 @@ acpi_status acpi_get_event_status(u32 event, acpi_event_status * event_status)
        if (value)
                *event_status |= ACPI_EVENT_FLAG_SET;
+        if (acpi_gbl_fixed_event_handlers[event].handler)
+                *event_status |= ACPI_EVENT_FLAG_HANDLE;
        return_ACPI_STATUS(status);
 }
@@ -571,6 +557,9 @@ acpi_get_gpe_status(acpi_handle gpe_device,
        status = acpi_hw_get_gpe_status(gpe_event_info, event_status);
+        if (gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK)
+                *event_status |= ACPI_EVENT_FLAG_HANDLE;
      unlock_and_exit:
        if (flags & ACPI_NOT_ISR) {
                (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c
index 60d54d1f6b19..eaaee1660bdf 100644
--- a/drivers/acpi/fan.c
+++ b/drivers/acpi/fan.c
@@ -34,7 +34,6 @@
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
-#define ACPI_FAN_COMPONENT              0x00200000
 #define ACPI_FAN_CLASS                  "fan"
 #define ACPI_FAN_FILE_STATE             "state"
diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
index 24649ada08df..adec3d15810a 100644
--- a/drivers/acpi/glue.c
+++ b/drivers/acpi/glue.c
@@ -140,6 +140,46 @@ struct device *acpi_get_physical_device(acpi_handle handle)
 EXPORT_SYMBOL(acpi_get_physical_device);
+/* ToDo: When a PCI bridge is found, return the PCI device behind the bridge
+ *       This should work in general, but did not on a Lenovo T61 for the
+ *       graphics card. But this must be fixed when the PCI device is
+ *       bound and the kernel device struct is attached to the acpi device
+ * Note: A success call will increase reference count by one
+ *       Do call put_device(dev) on the returned device then
+ */
+struct device *acpi_get_physical_pci_device(acpi_handle handle)
+{
+        struct device *dev;
+        long long device_id;
+        acpi_status status;
+        status =
+                acpi_evaluate_integer(handle, "_ADR", NULL, &device_id);
+        if (ACPI_FAILURE(status))
+                return NULL;
+        /* We need to attempt to determine whether the _ADR refers to a
+           PCI device or not. There's no terribly good way to do this,
+           so the best we can hope for is to assume that there'll never
+           be a device in the host bridge */
+        if (device_id >= 0x10000) {
+                /* It looks like a PCI device. Does it exist? */
+                dev = acpi_get_physical_device(handle);
+        } else {
+                /* It doesn't look like a PCI device. Does its parent
+                   exist? */
+                acpi_handle phandle;
+                if (acpi_get_parent(handle, &phandle))
+                        return NULL;
+                dev = acpi_get_physical_device(phandle);
+        }
+        if (!dev)
+                return NULL;
+        return dev;
+}
+EXPORT_SYMBOL(acpi_get_physical_pci_device);
 static int acpi_bind_one(struct device *dev, acpi_handle handle)
 {
        struct acpi_device *acpi_dev;
diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index fcfdef7b4fdd..e52ad91ce2dc 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -531,7 +531,7 @@ int __init acpi_irq_penalty_init(void)
        return 0;
 }
-static int acpi_irq_balance;    /* 0: static, 1: balance */
+static int acpi_irq_balance = -1;       /* 0: static, 1: balance */
 static int acpi_pci_link_allocate(struct acpi_pci_link *link)
 {
@@ -950,10 +950,17 @@ device_initcall(irqrouter_init_sysfs);
 static int __init acpi_pci_link_init(void)
 {
        if (acpi_noirq)
                return 0;
+        if (acpi_irq_balance == -1) {
+                /* no command line switch: enable balancing in IOAPIC mode */
+                if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC)
+                        acpi_irq_balance = 1;
+                else
+                        acpi_irq_balance = 0;
+        }
        acpi_link.count = 0;
        INIT_LIST_HEAD(&acpi_link.entries);
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 1b8f67d21d53..642554b1b60c 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -376,15 +376,9 @@ static int acpi_pci_root_remove(struct acpi_device *device, int type)
 static int __init acpi_pci_root_init(void)
 {
        if (acpi_pci_disabled)
                return 0;
-        /* DEBUG:
-           acpi_dbg_layer = ACPI_PCI_COMPONENT;
-           acpi_dbg_level = 0xFFFFFFFF;
-         */
        if (acpi_bus_register_driver(&acpi_pci_root_driver) < 0)
                return -ENODEV;
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index a1718e56103b..bb7d50dd2818 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -44,9 +44,8 @@
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
-#define _COMPONENT              ACPI_POWER_COMPONENT
+#define _COMPONENT                      ACPI_POWER_COMPONENT
 ACPI_MODULE_NAME("power");
-#define ACPI_POWER_COMPONENT            0x00800000
 #define ACPI_POWER_CLASS                "power_resource"
 #define ACPI_POWER_DEVICE_NAME          "Power Resource"
 #define ACPI_POWER_FILE_INFO            "info"
@@ -153,7 +152,8 @@ static int acpi_power_get_state(acpi_handle handle, int *state)
                              ACPI_POWER_RESOURCE_STATE_OFF;
        ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resource [%s] is %s\n",
-                          acpi_ut_get_node_name(handle), state ? "on" : "off"));
+                          acpi_ut_get_node_name(handle),
+                                *state ? "on" : "off"));
        return 0;
 }
@@ -516,11 +516,6 @@ int acpi_power_transition(struct acpi_device *device, int state)
        cl = &device->power.states[device->power.state].resources;
        tl = &device->power.states[state].resources;
-        if (!cl->count && !tl->count) {
-                result = -ENODEV;
-                goto end;
-        }
        /* TBD: Resources must be ordered. */
        /*
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index 24a362f8034c..34948362f41d 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -59,7 +59,6 @@
 #include <acpi/acpi_drivers.h>
 #include <acpi/processor.h>
-#define ACPI_PROCESSOR_COMPONENT        0x01000000
 #define ACPI_PROCESSOR_CLASS            "processor"
 #define ACPI_PROCESSOR_DEVICE_NAME      "Processor"
 #define ACPI_PROCESSOR_FILE_INFO        "info"
@@ -89,6 +88,7 @@ static int acpi_processor_handle_eject(struct acpi_processor *pr);
 static const struct acpi_device_id processor_device_ids[] = {
+        {ACPI_PROCESSOR_OBJECT_HID, 0},
        {ACPI_PROCESSOR_HID, 0},
        {"", 0},
 };
@@ -409,7 +409,7 @@ static int acpi_processor_remove_fs(struct acpi_device *device)
 /* Use the acpiid in MADT to map cpus in case of SMP */
 #ifndef CONFIG_SMP
-static int get_cpu_id(acpi_handle handle, u32 acpi_id) {return -1;}
+static int get_cpu_id(acpi_handle handle, int type, u32 acpi_id) { return -1; }
 #else
 static struct acpi_table_madt *madt;
@@ -428,27 +428,35 @@ static int map_lapic_id(struct acpi_subtable_header *entry,
 }
 static int map_lsapic_id(struct acpi_subtable_header *entry,
-                  u32 acpi_id, int *apic_id)
+                int device_declaration, u32 acpi_id, int *apic_id)
 {
        struct acpi_madt_local_sapic *lsapic =
                (struct acpi_madt_local_sapic *)entry;
+        u32 tmp = (lsapic->id << 8) | lsapic->eid;
        /* Only check enabled APICs*/
-        if (lsapic->lapic_flags & ACPI_MADT_ENABLED) {
+        if (!(lsapic->lapic_flags & ACPI_MADT_ENABLED))
-                /* First check against id */
+                return 0;
-                if (lsapic->processor_id == acpi_id) {
-                        *apic_id = (lsapic->id << 8) | lsapic->eid;
+        /* Device statement declaration type */
-                        return 1;
+        if (device_declaration) {
-                /* Check against optional uid */
+                if (entry->length < 16)
-                } else if (entry->length >= 16 &&
+                        printk(KERN_ERR PREFIX
-                        lsapic->uid == acpi_id) {
+                            "Invalid LSAPIC with Device type processor (SAPIC ID %#x)\n",
-                        *apic_id = lsapic->uid;
+                            tmp);
-                        return 1;
+                else if (lsapic->uid == acpi_id)
-                }
+                        goto found;
-        }
+        /* Processor statement declaration type */
+        } else if (lsapic->processor_id == acpi_id)
+                goto found;
        return 0;
+found:
+        *apic_id = tmp;
+        return 1;
 }
-static int map_madt_entry(u32 acpi_id)
+static int map_madt_entry(int type, u32 acpi_id)
 {
        unsigned long madt_end, entry;
        int apic_id = -1;
@@ -469,7 +477,7 @@ static int map_madt_entry(u32 acpi_id)
                        if (map_lapic_id(header, acpi_id, &apic_id))
                                break;
                } else if (header->type == ACPI_MADT_TYPE_LOCAL_SAPIC) {
-                        if (map_lsapic_id(header, acpi_id, &apic_id))
+                        if (map_lsapic_id(header, type, acpi_id, &apic_id))
                                break;
                }
                entry += header->length;
@@ -477,7 +485,7 @@ static int map_madt_entry(u32 acpi_id)
        return apic_id;
 }
-static int map_mat_entry(acpi_handle handle, u32 acpi_id)
+static int map_mat_entry(acpi_handle handle, int type, u32 acpi_id)
 {
        struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
        union acpi_object *obj;
@@ -500,7 +508,7 @@ static int map_mat_entry(acpi_handle handle, u32 acpi_id)
        if (header->type == ACPI_MADT_TYPE_LOCAL_APIC) {
                map_lapic_id(header, acpi_id, &apic_id);
        } else if (header->type == ACPI_MADT_TYPE_LOCAL_SAPIC) {
-                map_lsapic_id(header, acpi_id, &apic_id);
+                map_lsapic_id(header, type, acpi_id, &apic_id);
        }
 exit:
@@ -509,14 +517,14 @@ exit:
        return apic_id;
 }
-static int get_cpu_id(acpi_handle handle, u32 acpi_id)
+static int get_cpu_id(acpi_handle handle, int type, u32 acpi_id)
 {
        int i;
        int apic_id = -1;
-        apic_id = map_mat_entry(handle, acpi_id);
+        apic_id = map_mat_entry(handle, type, acpi_id);
        if (apic_id == -1)
-                apic_id = map_madt_entry(acpi_id);
+                apic_id = map_madt_entry(type, acpi_id);
        if (apic_id == -1)
                return apic_id;
@@ -532,15 +540,16 @@ static int get_cpu_id(acpi_handle handle, u32 acpi_id)
                                 Driver Interface
   -------------------------------------------------------------------------- */
-static int acpi_processor_get_info(struct acpi_processor *pr, unsigned has_uid)
+static int acpi_processor_get_info(struct acpi_device *device)
 {
        acpi_status status = 0;
        union acpi_object object = { 0 };
        struct acpi_buffer buffer = { sizeof(union acpi_object), &object };
-        int cpu_index;
+        struct acpi_processor *pr;
+        int cpu_index, device_declaration = 0;
        static int cpu0_initialized;
+        pr = acpi_driver_data(device);
        if (!pr)
                return -EINVAL;
@@ -561,22 +570,23 @@ static int acpi_processor_get_info(struct acpi_processor *pr, unsigned has_uid)
                ACPI_DEBUG_PRINT((ACPI_DB_INFO,
                                  "No bus mastering arbitration control\n"));
-        /* Check if it is a Device with HID and UID */
+        if (!strcmp(acpi_device_hid(device), ACPI_PROCESSOR_HID)) {
-        if (has_uid) {
+                /*
+                 * Declared with "Device" statement; match _UID.
+                 * Note that we don't handle string _UIDs yet.
+                 */
                unsigned long long value;
                status = acpi_evaluate_integer(pr->handle, METHOD_NAME__UID,
                                                NULL, &value);
                if (ACPI_FAILURE(status)) {
-                        printk(KERN_ERR PREFIX "Evaluating processor _UID\n");
+                        printk(KERN_ERR PREFIX
+                            "Evaluating processor _UID [%#x]\n", status);
                        return -ENODEV;
                }
+                device_declaration = 1;
                pr->acpi_id = value;
        } else {
-                /*
+                /* Declared with "Processor" statement; match ProcessorID */
-                * Evalute the processor object.  Note that it is common on SMP to
-                * have the first (boot) processor with a valid PBLK address while
-                * all others have a NULL address.
-                */
                status = acpi_evaluate_object(pr->handle, NULL, NULL, &buffer);
                if (ACPI_FAILURE(status)) {
                        printk(KERN_ERR PREFIX "Evaluating processor object\n");
@@ -584,12 +594,13 @@ static int acpi_processor_get_info(struct acpi_processor *pr, unsigned has_uid)
                }
                /*
-                * TBD: Synch processor ID (via LAPIC/LSAPIC structures) on SMP.
+                 * TBD: Synch processor ID (via LAPIC/LSAPIC structures) on SMP.
-                *      >>> 'acpi_get_processor_id(acpi_id, &id)' in arch/xxx/acpi.c
+                 *      >>> 'acpi_get_processor_id(acpi_id, &id)' in
-                */
+                 *      arch/xxx/acpi.c
+                 */
                pr->acpi_id = object.processor.proc_id;
        }
-        cpu_index = get_cpu_id(pr->handle, pr->acpi_id);
+        cpu_index = get_cpu_id(pr->handle, device_declaration, pr->acpi_id);
        /* Handle UP system running SMP kernel, with no LAPIC in MADT */
        if (!cpu0_initialized && (cpu_index == -1) &&
@@ -661,7 +672,7 @@ static int __cpuinit acpi_processor_start(struct acpi_device *device)
        pr = acpi_driver_data(device);
-        result = acpi_processor_get_info(pr, device->flags.unique_id);
+        result = acpi_processor_get_info(device);
        if (result) {
                /* Processor is physically not present */
                return 0;
@@ -761,20 +772,20 @@ static void acpi_processor_notify(acpi_handle handle, u32 event, void *data)
                acpi_bus_generate_proc_event(device, event,
                                        pr->performance_platform_limit);
                acpi_bus_generate_netlink_event(device->pnp.device_class,
-                                                  device->dev.bus_id, event,
+                                                  dev_name(&device->dev), event,
                                                  pr->performance_platform_limit);
                break;
        case ACPI_PROCESSOR_NOTIFY_POWER:
                acpi_processor_cst_has_changed(pr);
                acpi_bus_generate_proc_event(device, event, 0);
                acpi_bus_generate_netlink_event(device->pnp.device_class,
-                                                  device->dev.bus_id, event, 0);
+                                                  dev_name(&device->dev), event, 0);
                break;
        case ACPI_PROCESSOR_NOTIFY_THROTTLING:
                acpi_processor_tstate_has_changed(pr);
                acpi_bus_generate_proc_event(device, event, 0);
                acpi_bus_generate_netlink_event(device->pnp.device_class,
-                                                  device->dev.bus_id, event, 0);
+                                                  dev_name(&device->dev), event, 0);
        default:
                ACPI_DEBUG_PRINT((ACPI_DB_INFO,
                                  "Unsupported event [0x%x]\n", event));
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 81b40ed5379e..5f8d746a9b81 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -59,7 +59,6 @@
 #include <acpi/processor.h>
 #include <asm/processor.h>
-#define ACPI_PROCESSOR_COMPONENT        0x01000000
 #define ACPI_PROCESSOR_CLASS            "processor"
 #define _COMPONENT              ACPI_PROCESSOR_COMPONENT
 ACPI_MODULE_NAME("processor_idle");
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index dbcf260ea93f..0d7b772bef50 100644
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -44,9 +44,9 @@
 #endif
 #include <acpi/acpi_bus.h>
+#include <acpi/acpi_drivers.h>
 #include <acpi/processor.h>
-#define ACPI_PROCESSOR_COMPONENT        0x01000000
 #define ACPI_PROCESSOR_CLASS            "processor"
 #define ACPI_PROCESSOR_FILE_PERFORMANCE "performance"
 #define _COMPONENT              ACPI_PROCESSOR_COMPONENT
diff --git a/drivers/acpi/processor_thermal.c b/drivers/acpi/processor_thermal.c
index ef34b18f95ca..b1eb376fae45 100644
--- a/drivers/acpi/processor_thermal.c
+++ b/drivers/acpi/processor_thermal.c
@@ -40,7 +40,6 @@
 #include <acpi/processor.h>
 #include <acpi/acpi_drivers.h>
-#define ACPI_PROCESSOR_COMPONENT        0x01000000
 #define ACPI_PROCESSOR_CLASS            "processor"
 #define _COMPONENT              ACPI_PROCESSOR_COMPONENT
 ACPI_MODULE_NAME("processor_thermal");
diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c
index 3da2df93d924..a0c38c94a8a0 100644
--- a/drivers/acpi/processor_throttling.c
+++ b/drivers/acpi/processor_throttling.c
@@ -38,9 +38,9 @@
 #include <asm/uaccess.h>
 #include <acpi/acpi_bus.h>
+#include <acpi/acpi_drivers.h>
 #include <acpi/processor.h>
-#define ACPI_PROCESSOR_COMPONENT        0x01000000
 #define ACPI_PROCESSOR_CLASS            "processor"
 #define _COMPONENT              ACPI_PROCESSOR_COMPONENT
 ACPI_MODULE_NAME("processor_throttling");
diff --git a/drivers/acpi/reboot.c b/drivers/acpi/reboot.c
index 755baf2ca70a..a6b662c00b67 100644
--- a/drivers/acpi/reboot.c
+++ b/drivers/acpi/reboot.c
@@ -15,28 +15,9 @@ void acpi_reboot(void)
        rr = &acpi_gbl_FADT.reset_register;
-        /*
+        /* Is the reset register supported? */
-         * Is the ACPI reset register supported?
+        if (!(acpi_gbl_FADT.flags & ACPI_FADT_RESET_REGISTER) ||
-         *
+            rr->bit_width != 8 || rr->bit_offset != 0)
-         * According to ACPI 3.0, FADT.flags.RESET_REG_SUP indicates
-         * whether the ACPI reset mechanism is supported.
-         *
-         * However, some boxes have this bit clear, yet a valid
-         * ACPI_RESET_REG & RESET_VALUE, and ACPI reboot is the only
-         * mechanism that works for them after S3.
-         *
-         * This suggests that other operating systems may not be checking
-         * the RESET_REG_SUP bit, and are using other means to decide
-         * whether to use the ACPI reboot mechanism or not.
-         *
-         * So when acpi reboot is requested,
-         * only the reset_register is checked. If the following
-         * conditions are met, it indicates that the reset register is supported.
-         *      a. reset_register is not zero
-         *      b. the access width is eight
-         *      c. the bit_offset is zero
-         */
-        if (!(rr->address) || rr->bit_width != 8 || rr->bit_offset != 0)
                return;
        reset_value = acpi_gbl_FADT.reset_value;
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index a9dda8e0f9f9..bd5253ee5c85 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -109,8 +109,7 @@ static int acpi_bus_hot_remove_device(void *context)
                return 0;
        ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-                "Hot-removing device %s...\n", device->dev.bus_id));
+                "Hot-removing device %s...\n", dev_name(&device->dev)));
        if (acpi_bus_trim(device, 1)) {
                printk(KERN_ERR PREFIX
@@ -460,7 +459,7 @@ static int acpi_device_register(struct acpi_device *device,
                acpi_device_bus_id->instance_no = 0;
                list_add_tail(&acpi_device_bus_id->node, &acpi_bus_id_list);
        }
-        sprintf(device->dev.bus_id, "%s:%02x", acpi_device_bus_id->bus_id, acpi_device_bus_id->instance_no);
+        dev_set_name(&device->dev, "%s:%02x", acpi_device_bus_id->bus_id, acpi_device_bus_id->instance_no);
        if (device->parent) {
                list_add_tail(&device->node, &device->parent->children);
@@ -484,7 +483,8 @@ static int acpi_device_register(struct acpi_device *device,
        result = acpi_device_setup_files(device);
        if(result)
-                printk(KERN_ERR PREFIX "Error creating sysfs interface for device %s\n", device->dev.bus_id);
+                printk(KERN_ERR PREFIX "Error creating sysfs interface for device %s\n",
+                       dev_name(&device->dev));
        device->removal_type = ACPI_BUS_REMOVAL_NORMAL;
        return 0;
@@ -919,36 +919,6 @@ static void acpi_device_get_busid(struct acpi_device *device,
        }
 }
-static int
-acpi_video_bus_match(struct acpi_device *device)
-{
-        acpi_handle h_dummy;
-        if (!device)
-                return -EINVAL;
-        /* Since there is no HID, CID for ACPI Video drivers, we have
-         * to check well known required nodes for each feature we support.
-         */
-        /* Does this device able to support video switching ? */
-        if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOD", &h_dummy)) &&
-            ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOS", &h_dummy)))
-                return 0;
-        /* Does this device able to retrieve a video ROM ? */
-        if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_ROM", &h_dummy)))
-                return 0;
-        /* Does this device able to configure which video head to be POSTed ? */
-        if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_VPO", &h_dummy)) &&
-            ACPI_SUCCESS(acpi_get_handle(device->handle, "_GPD", &h_dummy)) &&
-            ACPI_SUCCESS(acpi_get_handle(device->handle, "_SPD", &h_dummy)))
-                return 0;
-        return -ENODEV;
-}
 /*
 * acpi_bay_match - see if a device is an ejectable driver bay
 *
@@ -1031,7 +1001,7 @@ static void acpi_device_set_id(struct acpi_device *device,
                   will get autoloaded and the device might still match
                   against another driver.
                */
-                if (ACPI_SUCCESS(acpi_video_bus_match(device)))
+                if (acpi_is_video_device(device))
                        cid_add = ACPI_VIDEO_HID;
                else if (ACPI_SUCCESS(acpi_bay_match(device)))
                        cid_add = ACPI_BAY_HID;
@@ -1043,7 +1013,7 @@ static void acpi_device_set_id(struct acpi_device *device,
                hid = ACPI_POWER_HID;
                break;
        case ACPI_BUS_TYPE_PROCESSOR:
-                hid = ACPI_PROCESSOR_HID;
+                hid = ACPI_PROCESSOR_OBJECT_HID;
                break;
        case ACPI_BUS_TYPE_SYSTEM:
                hid = ACPI_SYSTEM_HID;
diff --git a/drivers/acpi/sleep/proc.c b/drivers/acpi/sleep/proc.c
index 631ee2ee2ca0..64e591ba86f2 100644
--- a/drivers/acpi/sleep/proc.c
+++ b/drivers/acpi/sleep/proc.c
@@ -366,8 +366,8 @@ acpi_system_wakeup_device_seq_show(struct seq_file *seq, void *offset)
                           dev->wakeup.state.enabled ? "enabled" : "disabled");
                if (ldev)
                        seq_printf(seq, "%s:%s",
-                                   ldev->bus ? ldev->bus->name : "no-bus",
+                                   dev_name(ldev) ? ldev->bus->name : "no-bus",
-                                   ldev->bus_id);
+                                   dev_name(ldev));
                seq_printf(seq, "\n");
                put_device(ldev);
diff --git a/drivers/acpi/sleep/wakeup.c b/drivers/acpi/sleep/wakeup.c
index 38655eb132dc..dea4c23df764 100644
--- a/drivers/acpi/sleep/wakeup.c
+++ b/drivers/acpi/sleep/wakeup.c
@@ -88,7 +88,7 @@ void acpi_enable_wakeup_device(u8 sleep_state)
                spin_unlock(&acpi_device_lock);
                if (!dev->wakeup.flags.run_wake)
                        acpi_enable_gpe(dev->wakeup.gpe_device,
-                                        dev->wakeup.gpe_number, ACPI_ISR);
+                                        dev->wakeup.gpe_number);
                spin_lock(&acpi_device_lock);
        }
        spin_unlock(&acpi_device_lock);
@@ -122,7 +122,7 @@ void acpi_disable_wakeup_device(u8 sleep_state)
                                                  ACPI_GPE_TYPE_WAKE_RUN);
                                /* Re-enable it, since set_gpe_type will disable it */
                                acpi_enable_gpe(dev->wakeup.gpe_device,
-                                                dev->wakeup.gpe_number, ACPI_NOT_ISR);
+                                                dev->wakeup.gpe_number);
                                spin_lock(&acpi_device_lock);
                        }
                        continue;
@@ -133,7 +133,7 @@ void acpi_disable_wakeup_device(u8 sleep_state)
                /* Never disable run-wake GPE */
                if (!dev->wakeup.flags.run_wake) {
                        acpi_disable_gpe(dev->wakeup.gpe_device,
-                                         dev->wakeup.gpe_number, ACPI_NOT_ISR);
+                                         dev->wakeup.gpe_number);
                        acpi_clear_gpe(dev->wakeup.gpe_device,
                                       dev->wakeup.gpe_number, ACPI_NOT_ISR);
                }
@@ -162,7 +162,7 @@ static int __init acpi_wakeup_device_init(void)
                                  dev->wakeup.gpe_number,
                                  ACPI_GPE_TYPE_WAKE_RUN);
                acpi_enable_gpe(dev->wakeup.gpe_device,
-                                dev->wakeup.gpe_number, ACPI_NOT_ISR);
+                                dev->wakeup.gpe_number);
                dev->wakeup.state.enabled = 1;
                spin_lock(&acpi_device_lock);
        }
diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c
index 1d74171b7940..6e4107f82403 100644
--- a/drivers/acpi/system.c
+++ b/drivers/acpi/system.c
@@ -78,9 +78,15 @@ static ssize_t acpi_table_show(struct kobject *kobj,
            container_of(bin_attr, struct acpi_table_attr, attr);
        struct acpi_table_header *table_header = NULL;
        acpi_status status;
+        char name[ACPI_NAME_SIZE];
+        if (strncmp(table_attr->name, "NULL", 4))
+                memcpy(name, table_attr->name, ACPI_NAME_SIZE);
+        else
+                memcpy(name, "\0\0\0\0", 4);
        status =
-            acpi_get_table(table_attr->name, table_attr->instance,
+            acpi_get_table(name, table_attr->instance,
                           &table_header);
        if (ACPI_FAILURE(status))
                return -ENODEV;
@@ -95,21 +101,24 @@ static void acpi_table_attr_init(struct acpi_table_attr *table_attr,
        struct acpi_table_header *header = NULL;
        struct acpi_table_attr *attr = NULL;
-        memcpy(table_attr->name, table_header->signature, ACPI_NAME_SIZE);
+        if (table_header->signature[0] != '\0')
+                memcpy(table_attr->name, table_header->signature,
+                        ACPI_NAME_SIZE);
+        else
+                memcpy(table_attr->name, "NULL", 4);
        list_for_each_entry(attr, &acpi_table_attr_list, node) {
-                if (!memcmp(table_header->signature, attr->name,
+                if (!memcmp(table_attr->name, attr->name, ACPI_NAME_SIZE))
-                            ACPI_NAME_SIZE))
                        if (table_attr->instance < attr->instance)
                                table_attr->instance = attr->instance;
        }
        table_attr->instance++;
        if (table_attr->instance > 1 || (table_attr->instance == 1 &&
-                                         !acpi_get_table(table_header->
+                                        !acpi_get_table
-                                                         signature, 2,
+                                        (table_header->signature, 2, &header)))
-                                                         &header)))
+                sprintf(table_attr->name + ACPI_NAME_SIZE, "%d",
-                sprintf(table_attr->name + 4, "%d", table_attr->instance);
+                        table_attr->instance);
        table_attr->attr.size = 0;
        table_attr->attr.read = acpi_table_show;
@@ -167,7 +176,6 @@ static int acpi_system_sysfs_init(void)
 #define COUNT_ERROR 2   /* other */
 #define NUM_COUNTERS_EXTRA 3
-#define ACPI_EVENT_VALID        0x01
 struct event_counter {
        u32 count;
        u32 flags;
@@ -312,12 +320,6 @@ static int get_status(u32 index, acpi_event_status *status, acpi_handle *handle)
        } else if (index < (num_gpes + ACPI_NUM_FIXED_EVENTS))
                result = acpi_get_event_status(index - num_gpes, status);
-        /*
-         * sleep/power button GPE/Fixed Event is enabled after acpi_system_init,
-         * check the status at runtime and mark it as valid once it's enabled
-         */
-        if (!result && (*status & ACPI_EVENT_FLAG_ENABLED))
-                all_counters[index].flags |= ACPI_EVENT_VALID;
 end:
        return result;
 }
@@ -346,12 +348,14 @@ static ssize_t counter_show(struct kobject *kobj,
        if (result)
                goto end;
-        if (!(all_counters[index].flags & ACPI_EVENT_VALID))
+        if (!(status & ACPI_EVENT_FLAG_HANDLE))
-                size += sprintf(buf + size, "  invalid");
+                size += sprintf(buf + size, "   invalid");
        else if (status & ACPI_EVENT_FLAG_ENABLED)
-                size += sprintf(buf + size, "   enable");
+                size += sprintf(buf + size, "   enabled");
+        else if (status & ACPI_EVENT_FLAG_WAKE_ENABLED)
+                size += sprintf(buf + size, "   wake_enabled");
        else
-                size += sprintf(buf + size, "  disable");
+                size += sprintf(buf + size, "   disabled");
 end:
        size += sprintf(buf + size, "\n");
@@ -385,7 +389,7 @@ static ssize_t counter_set(struct kobject *kobj,
        if (result)
                goto end;
-        if (!(all_counters[index].flags & ACPI_EVENT_VALID)) {
+        if (!(status & ACPI_EVENT_FLAG_HANDLE)) {
                printk(KERN_WARNING PREFIX
                        "Can not change Invalid GPE/Fixed Event status\n");
                return -EINVAL;
@@ -394,10 +398,10 @@ static ssize_t counter_set(struct kobject *kobj,
        if (index < num_gpes) {
                if (!strcmp(buf, "disable\n") &&
                                (status & ACPI_EVENT_FLAG_ENABLED))
-                        result = acpi_disable_gpe(handle, index, ACPI_NOT_ISR);
+                        result = acpi_disable_gpe(handle, index);
                else if (!strcmp(buf, "enable\n") &&
                                !(status & ACPI_EVENT_FLAG_ENABLED))
-                        result = acpi_enable_gpe(handle, index, ACPI_NOT_ISR);
+                        result = acpi_enable_gpe(handle, index);
                else if (!strcmp(buf, "clear\n") &&
                                (status & ACPI_EVENT_FLAG_SET))
                        result = acpi_clear_gpe(handle, index, ACPI_NOT_ISR);
diff --git a/drivers/acpi/tables/tbfadt.c b/drivers/acpi/tables/tbfadt.c
index 2c7885e7ffba..2817158fb6a1 100644
--- a/drivers/acpi/tables/tbfadt.c
+++ b/drivers/acpi/tables/tbfadt.c
@@ -304,7 +304,7 @@ static void acpi_tb_convert_fadt(void)
         * The ACPI 1.0 reserved fields that will be zeroed are the bytes located at
         * offset 45, 55, 95, and the word located at offset 109, 110.
         */
-        if (acpi_gbl_FADT.header.revision < 3) {
+        if (acpi_gbl_FADT.header.revision < FADT2_REVISION_ID) {
                acpi_gbl_FADT.preferred_profile = 0;
                acpi_gbl_FADT.pstate_control = 0;
                acpi_gbl_FADT.cst_control = 0;
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index ad6cae938f0b..073ff09218a9 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -47,7 +47,6 @@
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
-#define ACPI_THERMAL_COMPONENT          0x04000000
 #define ACPI_THERMAL_CLASS              "thermal_zone"
 #define ACPI_THERMAL_DEVICE_NAME        "Thermal Zone"
 #define ACPI_THERMAL_FILE_STATE         "state"
@@ -576,7 +575,7 @@ static int acpi_thermal_critical(struct acpi_thermal *tz)
        acpi_bus_generate_proc_event(tz->device, ACPI_THERMAL_NOTIFY_CRITICAL,
                                tz->trips.critical.flags.enabled);
        acpi_bus_generate_netlink_event(tz->device->pnp.device_class,
-                                          tz->device->dev.bus_id,
+                                          dev_name(&tz->device->dev),
                                          ACPI_THERMAL_NOTIFY_CRITICAL,
                                          tz->trips.critical.flags.enabled);
@@ -605,7 +604,7 @@ static int acpi_thermal_hot(struct acpi_thermal *tz)
        acpi_bus_generate_proc_event(tz->device, ACPI_THERMAL_NOTIFY_HOT,
                                tz->trips.hot.flags.enabled);
        acpi_bus_generate_netlink_event(tz->device->pnp.device_class,
-                                          tz->device->dev.bus_id,
+                                          dev_name(&tz->device->dev),
                                          ACPI_THERMAL_NOTIFY_HOT,
                                          tz->trips.hot.flags.enabled);
@@ -1592,14 +1591,14 @@ static void acpi_thermal_notify(acpi_handle handle, u32 event, void *data)
                acpi_thermal_check(tz);
                acpi_bus_generate_proc_event(device, event, 0);
                acpi_bus_generate_netlink_event(device->pnp.device_class,
-                                                  device->dev.bus_id, event, 0);
+                                                  dev_name(&device->dev), event, 0);
                break;
        case ACPI_THERMAL_NOTIFY_DEVICES:
                acpi_thermal_trips_update(tz, ACPI_TRIPS_REFRESH_DEVICES);
                acpi_thermal_check(tz);
                acpi_bus_generate_proc_event(device, event, 0);
                acpi_bus_generate_netlink_event(device->pnp.device_class,
-                                                  device->dev.bus_id, event, 0);
+                                                  dev_name(&device->dev), event, 0);
                break;
        default:
                ACPI_DEBUG_PRINT((ACPI_DB_INFO,
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index a29b0ccac65a..baa441929720 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -41,7 +41,6 @@
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
-#define ACPI_VIDEO_COMPONENT            0x08000000
 #define ACPI_VIDEO_CLASS                "video"
 #define ACPI_VIDEO_BUS_NAME             "Video Bus"
 #define ACPI_VIDEO_DEVICE_NAME          "Video Device"
@@ -739,7 +738,8 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
                device->cap._DSS = 1;
        }
-        max_level = acpi_video_init_brightness(device);
+        if (acpi_video_backlight_support())
+                max_level = acpi_video_init_brightness(device);
        if (device->cap._BCL && device->cap._BCM && max_level > 0) {
                int result;
@@ -785,18 +785,21 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
                        printk(KERN_ERR PREFIX "Create sysfs link\n");
        }
-        if (device->cap._DCS && device->cap._DSS){
-                static int count = 0;
+        if (acpi_video_display_switch_support()) {
-                char *name;
-                name = kzalloc(MAX_NAME_LEN, GFP_KERNEL);
+                if (device->cap._DCS && device->cap._DSS) {
-                if (!name)
+                        static int count;
-                        return;
+                        char *name;
-                sprintf(name, "acpi_video%d", count++);
+                        name = kzalloc(MAX_NAME_LEN, GFP_KERNEL);
-                device->output_dev = video_output_register(name,
+                        if (!name)
-                                NULL, device, &acpi_output_properties);
+                                return;
-                kfree(name);
+                        sprintf(name, "acpi_video%d", count++);
+                        device->output_dev = video_output_register(name,
+                                        NULL, device, &acpi_output_properties);
+                        kfree(name);
+                }
        }
-        return;
 }
 /*
@@ -842,11 +845,16 @@ static void acpi_video_bus_find_cap(struct acpi_video_bus *video)
 static int acpi_video_bus_check(struct acpi_video_bus *video)
 {
        acpi_status status = -ENOENT;
+        struct device *dev;
        if (!video)
                return -EINVAL;
+        dev = acpi_get_physical_pci_device(video->device->handle);
+        if (!dev)
+                return -ENODEV;
+        put_device(dev);
        /* Since there is no HID, CID and so on for VGA driver, we have
         * to check well known required nodes.
         */
@@ -2094,12 +2102,6 @@ static int __init acpi_video_init(void)
 {
        int result = 0;
-        /*
-           acpi_dbg_level = 0xFFFFFFFF;
-           acpi_dbg_layer = 0x08000000;
-         */
        acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir);
        if (!acpi_video_dir)
                return -ENODEV;
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
new file mode 100644
index 000000000000..f022eb6f5637
--- /dev/null
+++ b/drivers/acpi/video_detect.c
@@ -0,0 +1,267 @@
+/*
+ *  Copyright (C) 2008       SuSE Linux Products GmbH
+ *                           Thomas Renninger <trenn@suse.de>
+ *
+ *  May be copied or modified under the terms of the GNU General Public License
+ *
+ * video_detect.c:
+ * Provides acpi_is_video_device() for early scanning of ACPI devices in scan.c
+ * There a Linux specific (Spec does not provide a HID for video devices) is
+ * assinged
+ *
+ * After PCI devices are glued with ACPI devices
+ * acpi_get_physical_pci_device() can be called to identify ACPI graphics
+ * devices for which a real graphics card is plugged in
+ *
+ * Now acpi_video_get_capabilities() can be called to check which
+ * capabilities the graphics cards plugged in support. The check for general
+ * video capabilities will be triggered by the first caller of
+ * acpi_video_get_capabilities(NULL); which will happen when the first
+ * backlight (or display output) switching supporting driver calls:
+ * acpi_video_backlight_support();
+ *
+ * Depending on whether ACPI graphics extensions (cmp. ACPI spec Appendix B)
+ * are available, video.ko should be used to handle the device.
+ *
+ * Otherwise vendor specific drivers like thinkpad_acpi, asus_acpi,
+ * sony_acpi,... can take care about backlight brightness and display output
+ * switching.
+ *
+ * If CONFIG_ACPI_VIDEO is neither set as "compiled in" (y) nor as a module (m)
+ * this file will not be compiled, acpi_video_get_capabilities() and
+ * acpi_video_backlight_support() will always return 0 and vendor specific
+ * drivers always can handle backlight.
+ *
+ */
+#include <linux/acpi.h>
+#include <linux/dmi.h>
+ACPI_MODULE_NAME("video");
+#define _COMPONENT              ACPI_VIDEO_COMPONENT
+static long acpi_video_support;
+static bool acpi_video_caps_checked;
+static acpi_status
+acpi_backlight_cap_match(acpi_handle handle, u32 level, void *context,
+                          void **retyurn_value)
+{
+        long *cap = context;
+        acpi_handle h_dummy;
+        if (ACPI_SUCCESS(acpi_get_handle(handle, "_BCM", &h_dummy)) &&
+            ACPI_SUCCESS(acpi_get_handle(handle, "_BCL", &h_dummy))) {
+                ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found generic backlight "
+                                  "support\n"));
+                *cap |= ACPI_VIDEO_BACKLIGHT;
+                /* We have backlight support, no need to scan further */
+                return AE_CTRL_TERMINATE;
+        }
+        return 0;
+}
+/* Returns true if the device is a video device which can be handled by
+ * video.ko.
+ * The device will get a Linux specific CID added in scan.c to
+ * identify the device as an ACPI graphics device
+ * Be aware that the graphics device may not be physically present
+ * Use acpi_video_get_capabilities() to detect general ACPI video
+ * capabilities of present cards
+ */
+long acpi_is_video_device(struct acpi_device *device)
+{
+        acpi_handle h_dummy;
+        long video_caps = 0;
+        if (!device)
+                return 0;
+        /* Does this device able to support video switching ? */
+        if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOD", &h_dummy)) &&
+            ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOS", &h_dummy)))
+                video_caps |= ACPI_VIDEO_OUTPUT_SWITCHING;
+        /* Does this device able to retrieve a video ROM ? */
+        if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_ROM", &h_dummy)))
+                video_caps |= ACPI_VIDEO_ROM_AVAILABLE;
+        /* Does this device able to configure which video head to be POSTed ? */
+        if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_VPO", &h_dummy)) &&
+            ACPI_SUCCESS(acpi_get_handle(device->handle, "_GPD", &h_dummy)) &&
+            ACPI_SUCCESS(acpi_get_handle(device->handle, "_SPD", &h_dummy)))
+                video_caps |= ACPI_VIDEO_DEVICE_POSTING;
+        /* Only check for backlight functionality if one of the above hit. */
+        if (video_caps)
+                acpi_walk_namespace(ACPI_TYPE_DEVICE, device->handle,
+                                    ACPI_UINT32_MAX, acpi_backlight_cap_match,
+                                    &video_caps, NULL);
+        return video_caps;
+}
+EXPORT_SYMBOL(acpi_is_video_device);
+static acpi_status
+find_video(acpi_handle handle, u32 lvl, void *context, void **rv)
+{
+        long *cap = context;
+        struct device *dev;
+        struct acpi_device *acpi_dev;
+        const struct acpi_device_id video_ids[] = {
+                {ACPI_VIDEO_HID, 0},
+                {"", 0},
+        };
+        if (acpi_bus_get_device(handle, &acpi_dev))
+                return AE_OK;
+        if (!acpi_match_device_ids(acpi_dev, video_ids)) {
+                dev = acpi_get_physical_pci_device(handle);
+                if (!dev)
+                        return AE_OK;
+                put_device(dev);
+                *cap |= acpi_is_video_device(acpi_dev);
+        }
+        return AE_OK;
+}
+/*
+ * Returns the video capabilities of a specific ACPI graphics device
+ *
+ * if NULL is passed as argument all ACPI devices are enumerated and
+ * all graphics capabilities of physically present devices are
+ * summerized and returned. This is cached and done only once.
+ */
+long acpi_video_get_capabilities(acpi_handle graphics_handle)
+{
+        long caps = 0;
+        struct acpi_device *tmp_dev;
+        acpi_status status;
+        if (acpi_video_caps_checked && graphics_handle == NULL)
+                return acpi_video_support;
+        if (!graphics_handle) {
+                /* Only do the global walk through all graphics devices once */
+                acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
+                                    ACPI_UINT32_MAX, find_video,
+                                    &caps, NULL);
+                /* There might be boot param flags set already... */
+                acpi_video_support |= caps;
+                acpi_video_caps_checked = 1;
+                /* Add blacklists here. Be careful to use the right *DMI* bits
+                 * to still be able to override logic via boot params, e.g.:
+                 *
+                 *   if (dmi_name_in_vendors("XY")) {
+                 *      acpi_video_support |=
+                 *              ACPI_VIDEO_OUTPUT_SWITCHING_DMI_VENDOR;
+                 *      acpi_video_support |=
+                 *              ACPI_VIDEO_BACKLIGHT_DMI_VENDOR;
+                 *}
+                 */
+        } else {
+                status = acpi_bus_get_device(graphics_handle, &tmp_dev);
+                if (ACPI_FAILURE(status)) {
+                        ACPI_EXCEPTION((AE_INFO, status, "Invalid device"));
+                        return 0;
+                }
+                acpi_walk_namespace(ACPI_TYPE_DEVICE, graphics_handle,
+                                    ACPI_UINT32_MAX, find_video,
+                                    &caps, NULL);
+        }
+        ACPI_DEBUG_PRINT((ACPI_DB_INFO, "We have 0x%lX video support %s %s\n",
+                          graphics_handle ? caps : acpi_video_support,
+                          graphics_handle ? "on device " : "in general",
+                          graphics_handle ? acpi_device_bid(tmp_dev) : ""));
+        return caps;
+}
+EXPORT_SYMBOL(acpi_video_get_capabilities);
+/* Returns true if video.ko can do backlight switching */
+int acpi_video_backlight_support(void)
+{
+        /*
+         * We must check whether the ACPI graphics device is physically plugged
+         * in. Therefore this must be called after binding PCI and ACPI devices
+         */
+        if (!acpi_video_caps_checked)
+                acpi_video_get_capabilities(NULL);
+        /* First check for boot param -> highest prio */
+        if (acpi_video_support & ACPI_VIDEO_BACKLIGHT_FORCE_VENDOR)
+                return 0;
+        else if (acpi_video_support & ACPI_VIDEO_BACKLIGHT_FORCE_VIDEO)
+                return 1;
+        /* Then check for DMI blacklist -> second highest prio */
+        if (acpi_video_support & ACPI_VIDEO_BACKLIGHT_DMI_VENDOR)
+                return 0;
+        else if (acpi_video_support & ACPI_VIDEO_BACKLIGHT_DMI_VIDEO)
+                return 1;
+        /* Then go the default way */
+        return acpi_video_support & ACPI_VIDEO_BACKLIGHT;
+}
+EXPORT_SYMBOL(acpi_video_backlight_support);
+/*
+ * Returns true if video.ko can do display output switching.
+ * This does not work well/at all with binary graphics drivers
+ * which disable system io ranges and do it on their own.
+ */
+int acpi_video_display_switch_support(void)
+{
+        if (!acpi_video_caps_checked)
+                acpi_video_get_capabilities(NULL);
+        if (acpi_video_support & ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VENDOR)
+                return 0;
+        else if (acpi_video_support & ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VIDEO)
+                return 1;
+        if (acpi_video_support & ACPI_VIDEO_OUTPUT_SWITCHING_DMI_VENDOR)
+                return 0;
+        else if (acpi_video_support & ACPI_VIDEO_OUTPUT_SWITCHING_DMI_VIDEO)
+                return 1;
+        return acpi_video_support & ACPI_VIDEO_OUTPUT_SWITCHING;
+}
+EXPORT_SYMBOL(acpi_video_display_switch_support);
+/*
+ * Use acpi_display_output=vendor/video or acpi_backlight=vendor/video
+ * To force that backlight or display output switching is processed by vendor
+ * specific acpi drivers or video.ko driver.
+ */
+int __init acpi_backlight(char *str)
+{
+        if (str == NULL || *str == '\0')
+                return 1;
+        else {
+                if (!strcmp("vendor", str))
+                        acpi_video_support |=
+                                ACPI_VIDEO_BACKLIGHT_FORCE_VENDOR;
+                if (!strcmp("video", str))
+                        acpi_video_support |=
+                                ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VIDEO;
+        }
+        return 1;
+}
+__setup("acpi_backlight=", acpi_backlight);
+int __init acpi_display_output(char *str)
+{
+        if (str == NULL || *str == '\0')
+                return 1;
+        else {
+                if (!strcmp("vendor", str))
+                        acpi_video_support |=
+                                ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VENDOR;
+                if (!strcmp("video", str))
+                        acpi_video_support |=
+                                ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VIDEO;
+        }
+        return 1;
+}
+__setup("acpi_display_output=", acpi_display_output);
diff --git a/drivers/acpi/wmi.c b/drivers/acpi/wmi.c
index 47cd7baf9b1b..8a8b377712c9 100644
--- a/drivers/acpi/wmi.c
+++ b/drivers/acpi/wmi.c
@@ -660,7 +660,7 @@ static void acpi_wmi_notify(acpi_handle handle, u32 event, void *data)
                                wblock->handler(event, wblock->handler_data);
                        acpi_bus_generate_netlink_event(
-                                device->pnp.device_class, device->dev.bus_id,
+                                device->pnp.device_class, dev_name(&device->dev),
                                event, 0);
                        break;
                }
diff --git a/drivers/char/sonypi.c b/drivers/char/sonypi.c
index 2457b07dabd6..f4374437a033 100644
--- a/drivers/char/sonypi.c
+++ b/drivers/char/sonypi.c
@@ -523,7 +523,7 @@ static int acpi_driver_registered;
 static int sonypi_ec_write(u8 addr, u8 value)
 {
-#ifdef CONFIG_ACPI_EC
+#ifdef CONFIG_ACPI
        if (SONYPI_ACPI_ACTIVE)
                return ec_write(addr, value);
 #endif
@@ -539,7 +539,7 @@ static int sonypi_ec_write(u8 addr, u8 value)
 static int sonypi_ec_read(u8 addr, u8 *value)
 {
-#ifdef CONFIG_ACPI_EC
+#ifdef CONFIG_ACPI
        if (SONYPI_ACPI_ACTIVE)
                return ec_read(addr, value);
 #endif
diff --git a/drivers/idle/Kconfig b/drivers/idle/Kconfig
index 108264de0ac9..f15e90a453d1 100644
--- a/drivers/idle/Kconfig
+++ b/drivers/idle/Kconfig
@@ -1,5 +1,6 @@
 menu "Memory power savings"
+depends on X86_64
 config I7300_IDLE_IOAT_CHANNEL
        bool
@@ -7,7 +8,7 @@ config I7300_IDLE_IOAT_CHANNEL
 config I7300_IDLE
        tristate "Intel chipset idle memory power saving driver"
        select I7300_IDLE_IOAT_CHANNEL
-        depends on X86_64 && EXPERIMENTAL
+        depends on EXPERIMENTAL
        help
          Enable memory power savings when idle with certain Intel server
          chipsets. The chipset must have I/O AT support, such as the
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 9494400e8fd0..4494ad27cbf1 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -230,7 +230,7 @@ config HP_WMI
 config MSI_LAPTOP
        tristate "MSI Laptop Extras"
        depends on X86
-        depends on ACPI_EC
+        depends on ACPI
        depends on BACKLIGHT_CLASS_DEVICE
        ---help---
          This is a driver for laptops built by MSI (MICRO-STAR
@@ -260,7 +260,7 @@ config PANASONIC_LAPTOP
 config COMPAL_LAPTOP
        tristate "Compal Laptop Extras"
        depends on X86
-        depends on ACPI_EC
+        depends on ACPI
        depends on BACKLIGHT_CLASS_DEVICE
        ---help---
          This is a driver for laptops built by Compal:
diff --git a/drivers/misc/acer-wmi.c b/drivers/misc/acer-wmi.c
index 0532a2de2ce4..94c9f911824e 100644
--- a/drivers/misc/acer-wmi.c
+++ b/drivers/misc/acer-wmi.c
@@ -1297,6 +1297,12 @@ static int __init acer_wmi_init(void)
        set_quirks();
+        if (!acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) {
+                interface->capability &= ~ACER_CAP_BRIGHTNESS;
+                printk(ACER_INFO "Brightness must be controlled by "
+                       "generic video driver\n");
+        }
        if (platform_driver_register(&acer_platform_driver)) {
                printk(ACER_ERR "Unable to register platform driver.\n");
                goto error_platform_register;
diff --git a/drivers/misc/asus-laptop.c b/drivers/misc/asus-laptop.c
index a9d5228724a6..8fb8b3591048 100644
--- a/drivers/misc/asus-laptop.c
+++ b/drivers/misc/asus-laptop.c
@@ -1208,9 +1208,13 @@ static int __init asus_laptop_init(void)
        dev = acpi_get_physical_device(hotk->device->handle);
-        result = asus_backlight_init(dev);
+        if (!acpi_video_backlight_support()) {
-        if (result)
+                result = asus_backlight_init(dev);
-                goto fail_backlight;
+                if (result)
+                        goto fail_backlight;
+        } else
+                printk(ASUS_INFO "Brightness ignored, must be controlled by "
+                       "ACPI video driver\n");
        result = asus_led_init(dev);
        if (result)
diff --git a/drivers/misc/compal-laptop.c b/drivers/misc/compal-laptop.c
index 344b790a6253..11003bba10d3 100644
--- a/drivers/misc/compal-laptop.c
+++ b/drivers/misc/compal-laptop.c
@@ -326,12 +326,14 @@ static int __init compal_init(void)
        /* Register backlight stuff */
-        compalbl_device = backlight_device_register("compal-laptop", NULL, NULL,
+        if (!acpi_video_backlight_support()) {
-                                                &compalbl_ops);
+                compalbl_device = backlight_device_register("compal-laptop", NULL, NULL,
-        if (IS_ERR(compalbl_device))
+                                                            &compalbl_ops);
-                return PTR_ERR(compalbl_device);
+                if (IS_ERR(compalbl_device))
+                        return PTR_ERR(compalbl_device);
-        compalbl_device->props.max_brightness = COMPAL_LCD_LEVEL_MAX-1;
+                compalbl_device->props.max_brightness = COMPAL_LCD_LEVEL_MAX-1;
+        }
        ret = platform_driver_register(&compal_driver);
        if (ret)
diff --git a/drivers/misc/eeepc-laptop.c b/drivers/misc/eeepc-laptop.c
index 9ef98b2d5039..02fe2b8b8939 100644
--- a/drivers/misc/eeepc-laptop.c
+++ b/drivers/misc/eeepc-laptop.c
@@ -825,9 +825,15 @@ static int __init eeepc_laptop_init(void)
                return -ENODEV;
        }
        dev = acpi_get_physical_device(ehotk->device->handle);
-        result = eeepc_backlight_init(dev);
-        if (result)
+        if (!acpi_video_backlight_support()) {
-                goto fail_backlight;
+                result = eeepc_backlight_init(dev);
+                if (result)
+                        goto fail_backlight;
+        } else
+                printk(EEEPC_INFO "Backlight controlled by ACPI video "
+                       "driver\n");
        result = eeepc_hwmon_init(dev);
        if (result)
                goto fail_hwmon;
diff --git a/drivers/misc/fujitsu-laptop.c b/drivers/misc/fujitsu-laptop.c
index d2cf0bfe3163..a7dd3e9fb79d 100644
--- a/drivers/misc/fujitsu-laptop.c
+++ b/drivers/misc/fujitsu-laptop.c
@@ -464,6 +464,14 @@ static int dmi_check_cb_s6410(const struct dmi_system_id *id)
        return 0;
 }
+static int dmi_check_cb_s6420(const struct dmi_system_id *id)
+{
+        dmi_check_cb_common(id);
+        fujitsu->keycode1 = KEY_SCREENLOCK;     /* "Lock" */
+        fujitsu->keycode2 = KEY_HELP;   /* "Mobility Center" */
+        return 0;
+}
 static int dmi_check_cb_p8010(const struct dmi_system_id *id)
 {
        dmi_check_cb_common(id);
@@ -473,7 +481,7 @@ static int dmi_check_cb_p8010(const struct dmi_system_id *id)
        return 0;
 }
-static struct dmi_system_id __initdata fujitsu_dmi_table[] = {
+static struct dmi_system_id fujitsu_dmi_table[] = {
        {
         .ident = "Fujitsu Siemens S6410",
         .matches = {
@@ -482,6 +490,13 @@ static struct dmi_system_id __initdata fujitsu_dmi_table[] = {
                     },
         .callback = dmi_check_cb_s6410},
        {
+         .ident = "Fujitsu Siemens S6420",
+         .matches = {
+                     DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
+                     DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6420"),
+                     },
+         .callback = dmi_check_cb_s6420},
+        {
         .ident = "Fujitsu LifeBook P8010",
         .matches = {
                     DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
@@ -990,16 +1005,16 @@ static int __init fujitsu_init(void)
        /* Register backlight stuff */
-        fujitsu->bl_device =
+        if (!acpi_video_backlight_support()) {
-            backlight_device_register("fujitsu-laptop", NULL, NULL,
+                fujitsu->bl_device =
-                                      &fujitsubl_ops);
+                        backlight_device_register("fujitsu-laptop", NULL, NULL,
-        if (IS_ERR(fujitsu->bl_device))
+                                                  &fujitsubl_ops);
-                return PTR_ERR(fujitsu->bl_device);
+                if (IS_ERR(fujitsu->bl_device))
+                        return PTR_ERR(fujitsu->bl_device);
-        max_brightness = fujitsu->max_brightness;
+                max_brightness = fujitsu->max_brightness;
+                fujitsu->bl_device->props.max_brightness = max_brightness - 1;
-        fujitsu->bl_device->props.max_brightness = max_brightness - 1;
+                fujitsu->bl_device->props.brightness = fujitsu->brightness_level;
-        fujitsu->bl_device->props.brightness = fujitsu->brightness_level;
+        }
        ret = platform_driver_register(&fujitsupf_driver);
        if (ret)
@@ -1035,7 +1050,8 @@ fail_hotkey:
 fail_backlight:
-        backlight_device_unregister(fujitsu->bl_device);
+        if (fujitsu->bl_device)
+                backlight_device_unregister(fujitsu->bl_device);
 fail_platform_device2:
@@ -1062,7 +1078,8 @@ static void __exit fujitsu_cleanup(void)
                           &fujitsupf_attribute_group);
        platform_device_unregister(fujitsu->pf_device);
        platform_driver_unregister(&fujitsupf_driver);
-        backlight_device_unregister(fujitsu->bl_device);
+        if (fujitsu->bl_device)
+                backlight_device_unregister(fujitsu->bl_device);
        acpi_bus_unregister_driver(&acpi_fujitsu_driver);
diff --git a/drivers/misc/intel_menlow.c b/drivers/misc/intel_menlow.c
index e00a2756e97e..27b7662955bb 100644
--- a/drivers/misc/intel_menlow.c
+++ b/drivers/misc/intel_menlow.c
@@ -52,6 +52,11 @@ MODULE_LICENSE("GPL");
 #define MEMORY_ARG_CUR_BANDWIDTH 1
 #define MEMORY_ARG_MAX_BANDWIDTH 0
+/*
+ * GTHS returning 'n' would mean that [0,n-1] states are supported
+ * In that case max_cstate would be n-1
+ * GTHS returning '0' would mean that no bandwidth control states are supported
+ */
 static int memory_get_int_max_bandwidth(struct thermal_cooling_device *cdev,
                                        unsigned long *max_state)
 {
@@ -71,6 +76,9 @@ static int memory_get_int_max_bandwidth(struct thermal_cooling_device *cdev,
        if (ACPI_FAILURE(status))
                return -EFAULT;
+        if (!value)
+                return -EINVAL;
        *max_state = value - 1;
        return 0;
 }
@@ -121,7 +129,7 @@ static int memory_set_cur_bandwidth(struct thermal_cooling_device *cdev,
        if (memory_get_int_max_bandwidth(cdev, &max_state))
                return -EFAULT;
-        if (max_state < 0 || state > max_state)
+        if (state > max_state)
                return -EINVAL;
        arg_list.count = 1;
diff --git a/drivers/misc/msi-laptop.c b/drivers/misc/msi-laptop.c
index de898c6938f3..759763d18e4c 100644
--- a/drivers/misc/msi-laptop.c
+++ b/drivers/misc/msi-laptop.c
@@ -347,12 +347,16 @@ static int __init msi_init(void)
        /* Register backlight stuff */
-        msibl_device = backlight_device_register("msi-laptop-bl", NULL, NULL,
+        if (acpi_video_backlight_support()) {
-                                                &msibl_ops);
+                printk(KERN_INFO "MSI: Brightness ignored, must be controlled "
-        if (IS_ERR(msibl_device))
+                       "by ACPI video driver\n");
-                return PTR_ERR(msibl_device);
+        } else {
+                msibl_device = backlight_device_register("msi-laptop-bl", NULL,
-        msibl_device->props.max_brightness = MSI_LCD_LEVEL_MAX-1;
+                                                         NULL, &msibl_ops);
+                if (IS_ERR(msibl_device))
+                        return PTR_ERR(msibl_device);
+                msibl_device->props.max_brightness = MSI_LCD_LEVEL_MAX-1;
+        }
        ret = platform_driver_register(&msipf_driver);
        if (ret)
diff --git a/drivers/misc/sony-laptop.c b/drivers/misc/sony-laptop.c
index 06f07e19dc70..7bcb81002dcf 100644
--- a/drivers/misc/sony-laptop.c
+++ b/drivers/misc/sony-laptop.c
@@ -1038,7 +1038,11 @@ static int sony_nc_add(struct acpi_device *device)
                goto outinput;
        }
-        if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle, "GBRT", &handle))) {
+        if (!acpi_video_backlight_support()) {
+                printk(KERN_INFO DRV_PFX "Sony: Brightness ignored, must be "
+                       "controlled by ACPI video driver\n");
+        } else if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle, "GBRT",
+                                                &handle))) {
                sony_backlight_device = backlight_device_register("sony", NULL,
                                                                  NULL,
                                                                  &sony_backlight_ops);
diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c
index 4db1cf9078d9..7a4a26b0edd2 100644
--- a/drivers/misc/thinkpad_acpi.c
+++ b/drivers/misc/thinkpad_acpi.c
@@ -4932,16 +4932,25 @@ static int __init brightness_init(struct ibm_init_struct *iibm)
         */
        b = tpacpi_check_std_acpi_brightness_support();
        if (b > 0) {
-                if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
-                        printk(TPACPI_NOTICE
+                if (acpi_video_backlight_support()) {
-                               "Lenovo BIOS switched to ACPI backlight "
+                        if (brightness_enable > 1) {
-                               "control mode\n");
+                                printk(TPACPI_NOTICE
-                }
+                                       "Standard ACPI backlight interface "
-                if (brightness_enable > 1) {
+                                       "available, not loading native one.\n");
-                        printk(TPACPI_NOTICE
+                                return 1;
-                               "standard ACPI backlight interface "
+                        } else if (brightness_enable == 1) {
-                               "available, not loading native one...\n");
+                                printk(TPACPI_NOTICE
-                        return 1;
+                                       "Backlight control force enabled, even if standard "
+                                       "ACPI backlight interface is available\n");
+                        }
+                } else {
+                        if (brightness_enable > 1) {
+                                printk(TPACPI_NOTICE
+                                       "Standard ACPI backlight interface not "
+                                       "available, thinkpad_acpi native "
+                                       "brightness control enabled\n");
+                        }
                }
        }
author	Linus Torvalds <torvalds@linux-foundation.org>	2008-11-12 13:24:46 -0500
committer	Linus Torvalds <torvalds@linux-foundation.org>	2008-11-12 13:24:46 -0500
commit	08c1184fa2b785f23453b8cbb43f86b409cde3a6 (patch)
tree	f3d529d72ecdbf3f6ee1d245a6d9b099408fc259 /drivers
parent	f21f237cf55494c3a4209de323281a3b0528da10 (diff)
parent	d1876ba4dead6ace7e9fbf16f83397e6486d0dfe (diff)