16 files changed, 157 insertions, 41 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index f688c214be0c..fbcaa069be86 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -283,24 +283,23 @@ config ACPI_TOSHIBA
          If you have a legacy free Toshiba laptop (such as the Libretto L1
          series), say Y.
-config ACPI_CUSTOM_DSDT
+config ACPI_CUSTOM_DSDT_FILE
-        bool "Include Custom DSDT"
+        string "Custom DSDT Table file to include"
+        default ""
        depends on !STANDALONE
-        default n 
        help
          This option supports a custom DSDT by linking it into the kernel.
          See Documentation/acpi/dsdt-override.txt
-          If unsure, say N.
-config ACPI_CUSTOM_DSDT_FILE
-        string "Custom DSDT Table file to include"
-        depends on ACPI_CUSTOM_DSDT
-        default ""
-        help
          Enter the full path name to the file which includes the AmlCode
          declaration.
+          If unsure, don't enter a file name.
+config ACPI_CUSTOM_DSDT
+        bool
+        default ACPI_CUSTOM_DSDT_FILE != ""
 config ACPI_CUSTOM_DSDT_INITRD
        bool "Read Custom DSDT from initramfs"
        depends on BLK_DEV_INITRD
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index ce3c0a2cbac4..5b6760e0f957 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -776,7 +776,7 @@ static int __init acpi_init(void)
        acpi_kobj = kobject_create_and_add("acpi", firmware_kobj);
        if (!acpi_kobj) {
-                printk(KERN_WARNING "%s: kset create error\n", __FUNCTION__);
+                printk(KERN_WARNING "%s: kset create error\n", __func__);
                acpi_kobj = NULL;
        }
diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index 24a7865a57cb..6c5da83cdb68 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -449,6 +449,7 @@ static int acpi_button_add(struct acpi_device *device)
        input->phys = button->phys;
        input->id.bustype = BUS_HOST;
        input->id.product = button->type;
+        input->dev.parent = &device->dev;
        switch (button->type) {
        case ACPI_BUTTON_TYPE_POWER:
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index caf873c14bfb..e7e197e3a4ff 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -129,6 +129,7 @@ static struct acpi_ec {
        struct mutex lock;
        wait_queue_head_t wait;
        struct list_head list;
+        atomic_t irq_count;
        u8 handlers_installed;
 } *boot_ec, *first_ec;
@@ -181,6 +182,8 @@ static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event, int force_poll)
 {
        int ret = 0;
+        atomic_set(&ec->irq_count, 0);
        if (unlikely(event == ACPI_EC_EVENT_OBF_1 &&
                     test_bit(EC_FLAGS_NO_OBF1_GPE, &ec->flags)))
                force_poll = 1;
@@ -227,6 +230,7 @@ static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event, int force_poll)
                while (time_before(jiffies, delay)) {
                        if (acpi_ec_check_status(ec, event))
                                goto end;
+                        msleep(5);
                }
        }
        pr_err(PREFIX "acpi_ec_wait timeout,"
@@ -529,6 +533,13 @@ static u32 acpi_ec_gpe_handler(void *data)
        struct acpi_ec *ec = data;
        pr_debug(PREFIX "~~~> interrupt\n");
+        atomic_inc(&ec->irq_count);
+        if (atomic_read(&ec->irq_count) > 5) {
+                pr_err(PREFIX "GPE storm detected, disabling EC GPE\n");
+                acpi_disable_gpe(NULL, ec->gpe, ACPI_ISR);
+                clear_bit(EC_FLAGS_GPE_MODE, &ec->flags);
+                return ACPI_INTERRUPT_HANDLED;
+        }
        clear_bit(EC_FLAGS_WAIT_GPE, &ec->flags);
        if (test_bit(EC_FLAGS_GPE_MODE, &ec->flags))
                wake_up(&ec->wait);
@@ -943,11 +954,7 @@ int __init acpi_ec_ecdt_probe(void)
                boot_ec->command_addr = ecdt_ptr->control.address;
                boot_ec->data_addr = ecdt_ptr->data.address;
                boot_ec->gpe = ecdt_ptr->gpe;
-                if (ACPI_FAILURE(acpi_get_handle(NULL, ecdt_ptr->id,
+                boot_ec->handle = ACPI_ROOT_OBJECT;
-                                &boot_ec->handle))) {
-                        pr_info("Failed to locate handle for boot EC\n");
-                        boot_ec->handle = ACPI_ROOT_OBJECT;
-                }
        } else {
                /* This workaround is needed only on some broken machines,
                 * which require early EC, but fail to provide ECDT */
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 8edba7b678eb..065819ba87c7 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -1237,7 +1237,7 @@ int acpi_check_resource_conflict(struct resource *res)
        if (clash) {
                if (acpi_enforce_resources != ENFORCE_RESOURCES_NO) {
-                        printk(KERN_INFO "%sACPI: %s resource %s [0x%llx-0x%llx]"
+                        printk("%sACPI: %s resource %s [0x%llx-0x%llx]"
                               " conflicts with ACPI region %s"
                               " [0x%llx-0x%llx]\n",
                               acpi_enforce_resources == ENFORCE_RESOURCES_LAX
diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c
index 7f19859580c7..7af414a3c63e 100644
--- a/drivers/acpi/pci_irq.c
+++ b/drivers/acpi/pci_irq.c
@@ -25,6 +25,7 @@
 */
+#include <linux/dmi.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>
@@ -76,6 +77,101 @@ static struct acpi_prt_entry *acpi_pci_irq_find_prt_entry(int segment,
        return NULL;
 }
+/* http://bugzilla.kernel.org/show_bug.cgi?id=4773 */
+static struct dmi_system_id medion_md9580[] = {
+        {
+                .ident = "Medion MD9580-F laptop",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "MEDIONNB"),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "A555"),
+                },
+        },
+        { }
+};
+/* http://bugzilla.kernel.org/show_bug.cgi?id=5044 */
+static struct dmi_system_id dell_optiplex[] = {
+        {
+                .ident = "Dell Optiplex GX1",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex GX1 600S+"),
+                },
+        },
+        { }
+};
+/* http://bugzilla.kernel.org/show_bug.cgi?id=10138 */
+static struct dmi_system_id hp_t5710[] = {
+        {
+                .ident = "HP t5710",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "hp t5000 series"),
+                        DMI_MATCH(DMI_BOARD_NAME, "098Ch"),
+                },
+        },
+        { }
+};
+struct prt_quirk {
+        struct dmi_system_id    *system;
+        unsigned int            segment;
+        unsigned int            bus;
+        unsigned int            device;
+        unsigned char           pin;
+        char                    *source;        /* according to BIOS */
+        char                    *actual_source;
+};
+/*
+ * These systems have incorrect _PRT entries.  The BIOS claims the PCI
+ * interrupt at the listed segment/bus/device/pin is connected to the first
+ * link device, but it is actually connected to the second.
+ */
+static struct prt_quirk prt_quirks[] = {
+        { medion_md9580, 0, 0, 9, 'A',
+                "\\_SB_.PCI0.ISA.LNKA",
+                "\\_SB_.PCI0.ISA.LNKB"},
+        { dell_optiplex, 0, 0, 0xd, 'A',
+                "\\_SB_.LNKB",
+                "\\_SB_.LNKA"},
+        { hp_t5710, 0, 0, 1, 'A',
+                "\\_SB_.PCI0.LNK1",
+                "\\_SB_.PCI0.LNK3"},
+};
+static void
+do_prt_fixups(struct acpi_prt_entry *entry, struct acpi_pci_routing_table *prt)
+{
+        int i;
+        struct prt_quirk *quirk;
+        for (i = 0; i < ARRAY_SIZE(prt_quirks); i++) {
+                quirk = &prt_quirks[i];
+                /* All current quirks involve link devices, not GSIs */
+                if (!prt->source)
+                        continue;
+                if (dmi_check_system(quirk->system) &&
+                    entry->id.segment == quirk->segment &&
+                    entry->id.bus == quirk->bus &&
+                    entry->id.device == quirk->device &&
+                    entry->pin + 'A' == quirk->pin &&
+                    !strcmp(prt->source, quirk->source) &&
+                    strlen(prt->source) >= strlen(quirk->actual_source)) {
+                        printk(KERN_WARNING PREFIX "firmware reports "
+                                "%04x:%02x:%02x[%c] connected to %s; "
+                                "changing to %s\n",
+                                entry->id.segment, entry->id.bus,
+                                entry->id.device, 'A' + entry->pin,
+                                prt->source, quirk->actual_source);
+                        strcpy(prt->source, quirk->actual_source);
+                }
+        }
+}
 static int
 acpi_pci_irq_add_entry(acpi_handle handle,
                       int segment, int bus, struct acpi_pci_routing_table *prt)
@@ -96,6 +192,8 @@ acpi_pci_irq_add_entry(acpi_handle handle,
        entry->id.function = prt->address & 0xFFFF;
        entry->pin = prt->pin;
+        do_prt_fixups(entry, prt);
        /*
         * Type 1: Dynamic
         * ---------------
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index f14ff1ffab29..c3fed31166b5 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -184,7 +184,7 @@ static void acpi_pci_bridge_scan(struct acpi_device *device)
                }
 }
-static int acpi_pci_root_add(struct acpi_device *device)
+static int __devinit acpi_pci_root_add(struct acpi_device *device)
 {
        int result = 0;
        struct acpi_pci_root *root = NULL;
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index a3cc8a98255c..36a68fa114e3 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -840,17 +840,19 @@ static int is_processor_present(acpi_handle handle)
        status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
-        /*
-         * if a processor object does not have an _STA object,
-         * OSPM assumes that the processor is present.
-         */
-        if (status == AE_NOT_FOUND)
-                return 1;
        if (ACPI_SUCCESS(status) && (sta & ACPI_STA_DEVICE_PRESENT))
                return 1;
-        ACPI_EXCEPTION((AE_INFO, status, "Processor Device is not present"));
+        /*
+         * _STA is mandatory for a processor that supports hot plug
+         */
+        if (status == AE_NOT_FOUND)
+                ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+                                "Processor does not support hot plug\n"));
+        else
+                ACPI_EXCEPTION((AE_INFO, status,
+                                "Processor Device is not present"));
        return 0;
 }
@@ -886,8 +888,8 @@ int acpi_processor_device_add(acpi_handle handle, struct acpi_device **device)
        return 0;
 }
-static void
+static void __ref acpi_processor_hotplug_notify(acpi_handle handle,
-acpi_processor_hotplug_notify(acpi_handle handle, u32 event, void *data)
+                                                u32 event, void *data)
 {
        struct acpi_processor *pr;
        struct acpi_device *device = NULL;
@@ -897,9 +899,10 @@ acpi_processor_hotplug_notify(acpi_handle handle, u32 event, void *data)
        switch (event) {
        case ACPI_NOTIFY_BUS_CHECK:
        case ACPI_NOTIFY_DEVICE_CHECK:
-                printk("Processor driver received %s event\n",
+                ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+                "Processor driver received %s event\n",
                       (event == ACPI_NOTIFY_BUS_CHECK) ?
-                       "ACPI_NOTIFY_BUS_CHECK" : "ACPI_NOTIFY_DEVICE_CHECK");
+                       "ACPI_NOTIFY_BUS_CHECK" : "ACPI_NOTIFY_DEVICE_CHECK"));
                if (!is_processor_present(handle))
                        break;
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 3fac011f9cf9..b26e3019e1cc 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -966,7 +966,7 @@ static void acpi_device_set_id(struct acpi_device *device,
        case ACPI_BUS_TYPE_DEVICE:
                status = acpi_get_object_info(handle, &buffer);
                if (ACPI_FAILURE(status)) {
-                        printk(KERN_ERR PREFIX "%s: Error reading device info\n", __FUNCTION__);
+                        printk(KERN_ERR PREFIX "%s: Error reading device info\n", __func__);
                        return;
                }
diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c
index 293a1cbb47c0..d2f71a54726c 100644
--- a/drivers/acpi/sleep/main.c
+++ b/drivers/acpi/sleep/main.c
@@ -504,7 +504,7 @@ static void acpi_power_off_prepare(void)
 static void acpi_power_off(void)
 {
        /* acpi_sleep_prepare(ACPI_STATE_S5) should have already been called */
-        printk("%s called\n", __FUNCTION__);
+        printk("%s called\n", __func__);
        local_irq_disable();
        acpi_enable_wakeup_device(ACPI_STATE_S5);
        acpi_enter_sleep_state(ACPI_STATE_S5);
diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c
index 55cf4c05bb74..4749f379a915 100644
--- a/drivers/acpi/system.c
+++ b/drivers/acpi/system.c
@@ -319,7 +319,7 @@ void acpi_irq_stats_init(void)
                goto fail;
        for (i = 0; i < num_counters; ++i) {
-                char buffer[10];
+                char buffer[12];
                char *name;
                if (i < num_gpes)
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 8d4b79b4f933..c4e00ac8ea85 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -879,6 +879,8 @@ static void acpi_thermal_check(void *data)
 }
 /* sys I/F for generic thermal sysfs support */
+#define KELVIN_TO_MILLICELSIUS(t) (t * 100 - 273200)
 static int thermal_get_temp(struct thermal_zone_device *thermal, char *buf)
 {
        struct acpi_thermal *tz = thermal->devdata;
@@ -886,7 +888,7 @@ static int thermal_get_temp(struct thermal_zone_device *thermal, char *buf)
        if (!tz)
                return -EINVAL;
-        return sprintf(buf, "%ld\n", KELVIN_TO_CELSIUS(tz->temperature));
+        return sprintf(buf, "%ld\n", KELVIN_TO_MILLICELSIUS(tz->temperature));
 }
 static const char enabled[] = "kernel";
@@ -980,21 +982,21 @@ static int thermal_get_trip_temp(struct thermal_zone_device *thermal,
        if (tz->trips.critical.flags.valid) {
                if (!trip)
-                        return sprintf(buf, "%ld\n", KELVIN_TO_CELSIUS(
+                        return sprintf(buf, "%ld\n", KELVIN_TO_MILLICELSIUS(
                                tz->trips.critical.temperature));
                trip--;
        }
        if (tz->trips.hot.flags.valid) {
                if (!trip)
-                        return sprintf(buf, "%ld\n", KELVIN_TO_CELSIUS(
+                        return sprintf(buf, "%ld\n", KELVIN_TO_MILLICELSIUS(
                                        tz->trips.hot.temperature));
                trip--;
        }
        if (tz->trips.passive.flags.valid) {
                if (!trip)
-                        return sprintf(buf, "%ld\n", KELVIN_TO_CELSIUS(
+                        return sprintf(buf, "%ld\n", KELVIN_TO_MILLICELSIUS(
                                        tz->trips.passive.temperature));
                trip--;
        }
@@ -1002,7 +1004,7 @@ static int thermal_get_trip_temp(struct thermal_zone_device *thermal,
        for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE &&
                tz->trips.active[i].flags.valid; i++) {
                if (!trip)
-                        return sprintf(buf, "%ld\n", KELVIN_TO_CELSIUS(
+                        return sprintf(buf, "%ld\n", KELVIN_TO_MILLICELSIUS(
                                        tz->trips.active[i].temperature));
                trip--;
        }
diff --git a/drivers/acpi/utilities/utdebug.c b/drivers/acpi/utilities/utdebug.c
index c7e128e5369b..7361204b1eef 100644
--- a/drivers/acpi/utilities/utdebug.c
+++ b/drivers/acpi/utilities/utdebug.c
@@ -109,7 +109,7 @@ void acpi_ut_track_stack_ptr(void)
 * RETURN:      Updated pointer to the function name
 *
 * DESCRIPTION: Remove the "Acpi" prefix from the function name, if present.
- *              This allows compiler macros such as __FUNCTION__ to be used
+ *              This allows compiler macros such as __func__ to be used
 *              with no change to the debug output.
 *
 ******************************************************************************/
diff --git a/drivers/acpi/utilities/utobject.c b/drivers/acpi/utilities/utobject.c
index 76ee766c84f9..e08b3fa6639f 100644
--- a/drivers/acpi/utilities/utobject.c
+++ b/drivers/acpi/utilities/utobject.c
@@ -432,7 +432,7 @@ acpi_ut_get_simple_object_size(union acpi_operand_object *internal_object,
         * element -- which is legal)
         */
        if (!internal_object) {
-                *obj_length = 0;
+                *obj_length = sizeof(union acpi_object);
                return_ACPI_STATUS(AE_OK);
        }
diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c
index eba55b7d6c95..44ea60cf21c0 100644
--- a/drivers/acpi/utils.c
+++ b/drivers/acpi/utils.c
@@ -407,6 +407,12 @@ acpi_evaluate_reference(acpi_handle handle,
                        break;
                }
+                if (!element->reference.handle) {
+                        printk(KERN_WARNING PREFIX "Invalid reference in"
+                               " package %s\n", pathname);
+                        status = AE_NULL_ENTRY;
+                        break;
+                }
                /* Get the  acpi_handle. */
                list->handles[i] = element->reference.handle;
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 12cce69b5441..1bc0c74f2755 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -713,7 +713,7 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
        kfree(obj);
-        if (device->cap._BCL && device->cap._BCM && device->cap._BQC && max_level > 0){
+        if (device->cap._BCL && device->cap._BCM && max_level > 0) {
                int result;
                static int count = 0;
                char *name;
@@ -1201,7 +1201,7 @@ static int acpi_video_bus_ROM_seq_show(struct seq_file *seq, void *offset)
        if (!video)
                goto end;
-        printk(KERN_INFO PREFIX "Please implement %s\n", __FUNCTION__);
+        printk(KERN_INFO PREFIX "Please implement %s\n", __func__);
        seq_printf(seq, "<TODO>\n");
      end: