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:
  toshiba_acpi: close race in toshiba_acpi driver
  ACPICA: disable _BIF warning
  ACPI: delete OSI(Linux) DMI dmesg spam
  ACPICA: Allow _WAK method to return an Integer
  ACPI: thinkpad-acpi: fix fan sleep/resume path
  sony-laptop: printk tweak
  sony-laptop: brightness regression fix
  Revert "ACPI: don't enable control method power button as wakeup device when Fixed Power button is used"
  ACPI suspend: Blacklist boxes that require us to set SCI_EN directly on resume
  ACPI: scheduling in atomic via acpi_evaluate_integer ()
  ACPI: battery: Convert discharge energy rate to current properly
  ACPI: EC: count interrupts only if called from interrupt handler.

drivers/acpi/battery.c

@@ -174,6 +174,15 @@ static int acpi_battery_get_property(struct power_supply *psy,
 		break;
 	case POWER_SUPPLY_PROP_CURRENT_NOW:
 		val->intval = battery->current_now * 1000;
+		/* if power units are mW, convert to mA by
+		   dividing by current voltage (mV/1000) */
+		if (!battery->power_unit) {
+			if (battery->voltage_now) {
+				val->intval /= battery->voltage_now;
+				val->intval *= 1000;
+			} else
+				val->intval = -1;
+		}
 		break;
 	case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
 	case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:

drivers/acpi/ec.c

@@ -219,7 +219,8 @@ static void gpe_transaction(struct acpi_ec *ec, u8 status)
 	goto unlock;
 err:
 	/* false interrupt, state didn't change */
-	++ec->curr->irq_count;
+	if (in_interrupt())
+		++ec->curr->irq_count;
 unlock:
 	spin_unlock_irqrestore(&ec->curr_lock, flags);
 }

drivers/acpi/osl.c

@@ -35,7 +35,6 @@
 #include <linux/interrupt.h>
 #include <linux/kmod.h>
 #include <linux/delay.h>
-#include <linux/dmi.h>
 #include <linux/workqueue.h>
 #include <linux/nmi.h>
 #include <linux/acpi.h>
@@ -97,54 +96,44 @@ static DEFINE_SPINLOCK(acpi_res_lock);
 static char osi_additional_string[OSI_STRING_LENGTH_MAX];
 
 /*
- * "Ode to _OSI(Linux)"
+ * The story of _OSI(Linux)
  *
- * osi_linux -- Control response to BIOS _OSI(Linux) query.
+ * From pre-history through Linux-2.6.22,
+ * Linux responded TRUE upon a BIOS OSI(Linux) query.
  *
- * As Linux evolves, the features that it supports change.
- * So an OSI string such as "Linux" is not specific enough
- * to be useful across multiple versions of Linux.  It
- * doesn't identify any particular feature, interface,
- * or even any particular version of Linux...
+ * Unfortunately, reference BIOS writers got wind of this
+ * and put OSI(Linux) in their example code, quickly exposing
+ * this string as ill-conceived and opening the door to
+ * an un-bounded number of BIOS incompatibilities.
  *
- * Unfortunately, Linux-2.6.22 and earlier responded "yes"
- * to a BIOS _OSI(Linux) query.  When
- * a reference mobile BIOS started using it, its use
- * started to spread to many vendor platforms.
- * As it is not supportable, we need to halt that spread.
+ * For example, OSI(Linux) was used on resume to re-POST a
+ * video card on one system, because Linux at that time
+ * could not do a speedy restore in its native driver.
+ * But then upon gaining quick native restore capability,
+ * Linux has no way to tell the BIOS to skip the time-consuming
+ * POST -- putting Linux at a permanent performance disadvantage.
+ * On another system, the BIOS writer used OSI(Linux)
+ * to infer native OS support for IPMI!  On other systems,
+ * OSI(Linux) simply got in the way of Linux claiming to
+ * be compatible with other operating systems, exposing
+ * BIOS issues such as skipped device initialization.
  *
- * Today, most BIOS references to _OSI(Linux) are noise --
- * they have no functional effect and are just dead code
- * carried over from the reference BIOS.
- *
- * The next most common case is that _OSI(Linux) harms Linux,
- * usually by causing the BIOS to follow paths that are
- * not tested during Windows validation.
- *
- * Finally, there is a short list of platforms
- * where OSI(Linux) benefits Linux.
- *
- * In Linux-2.6.23, OSI(Linux) is first disabled by default.
- * DMI is used to disable the dmesg warning about OSI(Linux)
- * on platforms where it is known to have no effect.
- * But a dmesg warning remains for systems where
- * we do not know if OSI(Linux) is good or bad for the system.
- * DMI is also used to enable OSI(Linux) for the machines
- * that are known to need it.
+ * So "Linux" turned out to be a really poor chose of
+ * OSI string, and from Linux-2.6.23 onward we respond FALSE.
  *
  * BIOS writers should NOT query _OSI(Linux) on future systems.
- * It will be ignored by default, and to get Linux to
- * not ignore it will require a kernel source update to
- * add a DMI entry, or a boot-time "acpi_osi=Linux" invocation.
+ * Linux will complain on the console when it sees it, and return FALSE.
+ * To get Linux to return TRUE for your system  will require
+ * a kernel source update to add a DMI entry,
+ * or boot with "acpi_osi=Linux"
  */
-#define OSI_LINUX_ENABLE 0
 
 static struct osi_linux {
 	unsigned int	enable:1;
 	unsigned int	dmi:1;
 	unsigned int	cmdline:1;
 	unsigned int	known:1;
-} osi_linux = { OSI_LINUX_ENABLE, 0, 0, 0};
+} osi_linux = { 0, 0, 0, 0};
 
 static void __init acpi_request_region (struct acpi_generic_address *addr,
 	unsigned int length, char *desc)
@@ -1296,34 +1285,6 @@ acpi_status acpi_os_release_object(acpi_cache_t * cache, void *object)
 	return (AE_OK);
 }
 
-/**
- *	acpi_dmi_dump - dump DMI slots needed for blacklist entry
- *
- *	Returns 0 on success
- */
-static int acpi_dmi_dump(void)
-{
-
-	if (!dmi_available)
-		return -1;
-
-	printk(KERN_NOTICE PREFIX "DMI System Vendor: %s\n",
-		dmi_get_system_info(DMI_SYS_VENDOR));
-	printk(KERN_NOTICE PREFIX "DMI Product Name: %s\n",
-		dmi_get_system_info(DMI_PRODUCT_NAME));
-	printk(KERN_NOTICE PREFIX "DMI Product Version: %s\n",
-		dmi_get_system_info(DMI_PRODUCT_VERSION));
-	printk(KERN_NOTICE PREFIX "DMI Board Name: %s\n",
-		dmi_get_system_info(DMI_BOARD_NAME));
-	printk(KERN_NOTICE PREFIX "DMI BIOS Vendor: %s\n",
-		dmi_get_system_info(DMI_BIOS_VENDOR));
-	printk(KERN_NOTICE PREFIX "DMI BIOS Date: %s\n",
-		dmi_get_system_info(DMI_BIOS_DATE));
-
-	return 0;
-}
-
-
 /******************************************************************************
  *
  * FUNCTION:    acpi_os_validate_interface
@@ -1350,21 +1311,6 @@ acpi_os_validate_interface (char *interface)
 			osi_linux.cmdline ? " via cmdline" :
 			osi_linux.dmi ? " via DMI" : "");
 
-		if (!osi_linux.dmi) {
-			if (acpi_dmi_dump())
-				printk(KERN_NOTICE PREFIX
-					"[please extract dmidecode output]\n");
-			printk(KERN_NOTICE PREFIX
-				"Please send DMI info above to "
-				"linux-acpi@vger.kernel.org\n");
-		}
-		if (!osi_linux.known && !osi_linux.cmdline) {
-			printk(KERN_NOTICE PREFIX
-				"If \"acpi_osi=%sLinux\" works better, "
-				"please notify linux-acpi@vger.kernel.org\n",
-				osi_linux.enable ? "!" : "");
-		}
-
 		if (osi_linux.enable)
 			return AE_OK;
 	}

drivers/acpi/scan.c

@@ -751,16 +751,6 @@ static int acpi_bus_get_wakeup_device_flags(struct acpi_device *device)
 	if (!acpi_match_device_ids(device, button_device_ids))
 		device->wakeup.flags.run_wake = 1;
 
-	/*
-	 * Don't set Power button GPE as run_wake
-	 * if Fixed Power button is used
-	 */
-	if (!strcmp(device->pnp.hardware_id, "PNP0C0C") &&
-		!(acpi_gbl_FADT.flags & ACPI_FADT_POWER_BUTTON)) {
-		device->wakeup.flags.run_wake = 0;
-		device->wakeup.flags.valid = 0;
-	}
-
       end:
 	if (ACPI_FAILURE(status))
 		device->flags.wake_capable = 0;

drivers/acpi/sleep/main.c

@@ -90,6 +90,18 @@ void __init acpi_old_suspend_ordering(void)
 	old_suspend_ordering = true;
 }
 
+/*
+ * According to the ACPI specification the BIOS should make sure that ACPI is
+ * enabled and SCI_EN bit is set on wake-up from S1 - S3 sleep states.  Still,
+ * some BIOSes don't do that and therefore we use acpi_enable() to enable ACPI
+ * on such systems during resume.  Unfortunately that doesn't help in
+ * particularly pathological cases in which SCI_EN has to be set directly on
+ * resume, although the specification states very clearly that this flag is
+ * owned by the hardware.  The set_sci_en_on_resume variable will be set in such
+ * cases.
+ */
+static bool set_sci_en_on_resume;
+
 /**
  *	acpi_pm_disable_gpes - Disable the GPEs.
  */
@@ -235,7 +247,11 @@ static int acpi_suspend_enter(suspend_state_t pm_state)
 	}
 
 	/* If ACPI is not enabled by the BIOS, we need to enable it here. */
-	acpi_enable();
+	if (set_sci_en_on_resume)
+		acpi_set_register(ACPI_BITREG_SCI_ENABLE, 1);
+	else
+		acpi_enable();
+
 	/* Reprogram control registers and execute _BFS */
 	acpi_leave_sleep_state_prep(acpi_state);
 
@@ -323,6 +339,12 @@ static int __init init_old_suspend_ordering(const struct dmi_system_id *d)
 	return 0;
 }
 
+static int __init init_set_sci_en_on_resume(const struct dmi_system_id *d)
+{
+	set_sci_en_on_resume = true;
+	return 0;
+}
+
 static struct dmi_system_id __initdata acpisleep_dmi_table[] = {
 	{
 	.callback = init_old_suspend_ordering,
@@ -340,6 +362,22 @@ static struct dmi_system_id __initdata acpisleep_dmi_table[] = {
 		DMI_MATCH(DMI_PRODUCT_NAME, "HP xw4600 Workstation"),
 		},
 	},
+	{
+	.callback = init_set_sci_en_on_resume,
+	.ident = "Apple MacBook 1,1",
+	.matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "Apple Computer, Inc."),
+		DMI_MATCH(DMI_PRODUCT_NAME, "MacBook1,1"),
+		},
+	},
+	{
+	.callback = init_set_sci_en_on_resume,
+	.ident = "Apple MacMini 1,1",
+	.matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "Apple Computer, Inc."),
+		DMI_MATCH(DMI_PRODUCT_NAME, "Macmini1,1"),
+		},
+	},
 	{},
 };
 #endif /* CONFIG_SUSPEND */

drivers/acpi/toshiba_acpi.c

@@ -848,8 +848,6 @@ static int __init toshiba_acpi_init(void)
 	ret = input_register_polled_device(toshiba_acpi.poll_dev);
 	if (ret) {
 		printk(MY_ERR "unable to register kill-switch input device\n");
-		rfkill_free(toshiba_acpi.rfk_dev);
-		toshiba_acpi.rfk_dev = NULL;
 		toshiba_acpi_exit();
 		return ret;
 	}

drivers/acpi/utils.c

@@ -259,34 +259,26 @@ acpi_evaluate_integer(acpi_handle handle,
 		      struct acpi_object_list *arguments, unsigned long long *data)
 {
 	acpi_status status = AE_OK;
-	union acpi_object *element;
+	union acpi_object element;
 	struct acpi_buffer buffer = { 0, NULL };
 
-
 	if (!data)
 		return AE_BAD_PARAMETER;
 
-	element = kzalloc(sizeof(union acpi_object), irqs_disabled() ? GFP_ATOMIC: GFP_KERNEL);
-	if (!element)
-		return AE_NO_MEMORY;
-
 	buffer.length = sizeof(union acpi_object);
-	buffer.pointer = element;
+	buffer.pointer = &element;
 	status = acpi_evaluate_object(handle, pathname, arguments, &buffer);
 	if (ACPI_FAILURE(status)) {
 		acpi_util_eval_error(handle, pathname, status);
-		kfree(element);
 		return status;
 	}
 
-	if (element->type != ACPI_TYPE_INTEGER) {
+	if (element.type != ACPI_TYPE_INTEGER) {
 		acpi_util_eval_error(handle, pathname, AE_BAD_DATA);
-		kfree(element);
 		return AE_BAD_DATA;
 	}
 
-	*data = element->integer.value;
-	kfree(element);
+	*data = element.integer.value;
 
 	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Return value [%llu]\n", *data));
 

drivers/misc/sony-laptop.c

@@ -1038,8 +1038,8 @@ static int sony_nc_add(struct acpi_device *device)
 		goto outinput;
 	}
 
-	if (!acpi_video_backlight_support()) {
-		printk(KERN_INFO DRV_PFX "Sony: Brightness ignored, must be "
+	if (acpi_video_backlight_support()) {
+		printk(KERN_INFO DRV_PFX "brightness ignored, must be "
 		       "controlled by ACPI video driver\n");
 	} else if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle, "GBRT",
 						&handle))) {

drivers/misc/thinkpad_acpi.c

@@ -5318,6 +5318,7 @@ static enum fan_control_commands fan_control_commands;
 
 static u8 fan_control_initial_status;
 static u8 fan_control_desired_level;
+static u8 fan_control_resume_level;
 static int fan_watchdog_maxinterval;
 
 static struct mutex fan_mutex;
@@ -5440,8 +5441,8 @@ static int fan_set_level(int level)
 
 	case TPACPI_FAN_WR_ACPI_FANS:
 	case TPACPI_FAN_WR_TPEC:
-		if ((level != TP_EC_FAN_AUTO) &&
-		    (level != TP_EC_FAN_FULLSPEED) &&
+		if (!(level & TP_EC_FAN_AUTO) &&
+		    !(level & TP_EC_FAN_FULLSPEED) &&
 		    ((level < 0) || (level > 7)))
 			return -EINVAL;
 
@@ -6005,38 +6006,67 @@ static void fan_exit(void)
 
 static void fan_suspend(pm_message_t state)
 {
+	int rc;
+
 	if (!fan_control_allowed)
 		return;
 
 	/* Store fan status in cache */
-	fan_get_status_safe(NULL);
+	fan_control_resume_level = 0;
+	rc = fan_get_status_safe(&fan_control_resume_level);
+	if (rc < 0)
+		printk(TPACPI_NOTICE
+			"failed to read fan level for later "
+			"restore during resume: %d\n", rc);
+
+	/* if it is undefined, don't attempt to restore it.
+	 * KEEP THIS LAST */
 	if (tp_features.fan_ctrl_status_undef)
-		fan_control_desired_level = TP_EC_FAN_AUTO;
+		fan_control_resume_level = 0;
 }
 
 static void fan_resume(void)
 {
-	u8 saved_fan_level;
 	u8 current_level = 7;
 	bool do_set = false;
+	int rc;
 
 	/* DSDT *always* updates status on resume */
 	tp_features.fan_ctrl_status_undef = 0;
 
-	saved_fan_level = fan_control_desired_level;
 	if (!fan_control_allowed ||
+	    !fan_control_resume_level ||
 	    (fan_get_status_safe(&current_level) < 0))
 		return;
 
 	switch (fan_control_access_mode) {
 	case TPACPI_FAN_WR_ACPI_SFAN:
-		do_set = (saved_fan_level > current_level);
+		/* never decrease fan level */
+		do_set = (fan_control_resume_level > current_level);
 		break;
 	case TPACPI_FAN_WR_ACPI_FANS:
 	case TPACPI_FAN_WR_TPEC:
-		do_set = ((saved_fan_level & TP_EC_FAN_FULLSPEED) ||
-			  (saved_fan_level == 7 &&
-			   !(current_level & TP_EC_FAN_FULLSPEED)));
+		/* never decrease fan level, scale is:
+		 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
+		 *
+		 * We expect the firmware to set either 7 or AUTO, but we
+		 * handle FULLSPEED out of paranoia.
+		 *
+		 * So, we can safely only restore FULLSPEED or 7, anything
+		 * else could slow the fan.  Restoring AUTO is useless, at
+		 * best that's exactly what the DSDT already set (it is the
+		 * slower it uses).
+		 *
+		 * Always keep in mind that the DSDT *will* have set the
+		 * fans to what the vendor supposes is the best level.  We
+		 * muck with it only to speed the fan up.
+		 */
+		if (fan_control_resume_level != 7 &&
+		    !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
+			return;
+		else
+			do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
+				 (current_level != fan_control_resume_level);
 		break;
 	default:
 		return;
@@ -6044,8 +6074,11 @@ static void fan_resume(void)
 	if (do_set) {
 		printk(TPACPI_NOTICE
 			"restoring fan level to 0x%02x\n",
-			saved_fan_level);
-		fan_set_level_safe(saved_fan_level);
+			fan_control_resume_level);
+		rc = fan_set_level_safe(fan_control_resume_level);
+		if (rc < 0)
+			printk(TPACPI_NOTICE
+				"failed to restore fan level: %d\n", rc);
 	}
 }
 

include/acpi/acpredef.h

@@ -167,7 +167,7 @@ static const union acpi_predefined_info predefined_names[] = {
 	{.info = {"_BFS", 1, 0}},
 	{.info = {"_BIF", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER,
 					  9,
-					  ACPI_RTYPE_STRING, 4, 0}},	/* fixed (9 Int),(4 Str) */
+					  ACPI_RTYPE_STRING | ACPI_RTYPE_BUFFER, 4, 0}},	/* fixed (9 Int),(4 Str) */
 	{.info = {"_BLT", 3, 0}},
 	{.info = {"_BMC", 1, 0}},
 	{.info = {"_BMD", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 5, 0, 0, 0}},	/* fixed (5 Int) */
@@ -346,7 +346,7 @@ static const union acpi_predefined_info predefined_names[] = {
 
 	/* Acpi 1.0 defined _WAK with no return value. Later, it was changed to return a package */
 
-	{.info = {"_WAK", 1, ACPI_RTYPE_NONE | ACPI_RTYPE_PACKAGE}},
+	{.info = {"_WAK", 1, ACPI_RTYPE_NONE | ACPI_RTYPE_INTEGER | ACPI_RTYPE_PACKAGE}},
 	{.ret_info = {ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 2, 0, 0, 0}},	/* fixed (2 Int), but is optional */
 	{.ret_info = {0, 0, 0, 0, 0, 0}}	/* Table terminator */
 };