Merge branches 'release', 'bugzilla-6217', 'bugzilla-6629', 'bugzilla…

…-6933', 'bugzilla-7186', 'bugzilla-8269', 'bugzilla-8570', 'bugzilla-9139', 'bugzilla-9277', 'bugzilla-9341', 'bugzilla-9444', 'bugzilla-9614', 'bugzilla-9643' and 'bugzilla-9644' into release

Documentation/00-INDEX

@@ -14,6 +14,7 @@ Following translations are available on the WWW:
 	- this file.
 ABI/
 	- info on kernel <-> userspace ABI and relative interface stability.
+
 BUG-HUNTING
 	- brute force method of doing binary search of patches to find bug.
 Changes
@@ -66,6 +67,8 @@ VGA-softcursor.txt
 	- how to change your VGA cursor from a blinking underscore.
 accounting/
 	- documentation on accounting and taskstats.
+acpi/
+	- info on ACPI-specific hooks in the kernel.
 aoe/
 	- description of AoE (ATA over Ethernet) along with config examples.
 applying-patches.txt

Documentation/acpi/method-tracing.txt

@@ -0,0 +1,26 @@
+/sys/module/acpi/parameters/:
+
+trace_method_name
+	The AML method name that the user wants to trace
+
+trace_debug_layer
+	The temporary debug_layer used when tracing the method.
+	Using 0xffffffff by default if it is 0.
+
+trace_debug_level
+	The temporary debug_level used when tracing the method.
+	Using 0x00ffffff by default if it is 0.
+
+trace_state
+	The status of the tracing feature.
+
+	"enabled" means this feature is enabled
+	and the AML method is traced every time it's executed.
+
+	"1" means this feature is enabled and the AML method
+	will only be traced during the next execution.
+
+	"disabled" means this feature is disabled.
+	Users can enable/disable this debug tracing feature by
+	"echo string > /sys/module/acpi/parameters/trace_state".
+	"string" should be one of "enable", "disable" and "1".

arch/ia64/kernel/acpi.c

@@ -69,6 +69,20 @@ unsigned int acpi_cpei_phys_cpuid;
 
 unsigned long acpi_wakeup_address = 0;
 
+#ifdef CONFIG_IA64_GENERIC
+static unsigned long __init acpi_find_rsdp(void)
+{
+	unsigned long rsdp_phys = 0;
+
+	if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
+		rsdp_phys = efi.acpi20;
+	else if (efi.acpi != EFI_INVALID_TABLE_ADDR)
+		printk(KERN_WARNING PREFIX
+		       "v1.0/r0.71 tables no longer supported\n");
+	return rsdp_phys;
+}
+#endif
+
 const char __init *
 acpi_get_sysname(void)
 {
@@ -631,18 +645,6 @@ static int __init acpi_parse_fadt(struct acpi_table_header *table)
 	return 0;
 }
 
-unsigned long __init acpi_find_rsdp(void)
-{
-	unsigned long rsdp_phys = 0;
-
-	if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
-		rsdp_phys = efi.acpi20;
-	else if (efi.acpi != EFI_INVALID_TABLE_ADDR)
-		printk(KERN_WARNING PREFIX
-		       "v1.0/r0.71 tables no longer supported\n");
-	return rsdp_phys;
-}
-
 int __init acpi_boot_init(void)
 {
 

arch/x86/kernel/acpi/boot.c

@@ -587,25 +587,6 @@ int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
 
 EXPORT_SYMBOL(acpi_unregister_ioapic);
 
-static unsigned long __init
-acpi_scan_rsdp(unsigned long start, unsigned long length)
-{
-	unsigned long offset = 0;
-	unsigned long sig_len = sizeof("RSD PTR ") - 1;
-
-	/*
-	 * Scan all 16-byte boundaries of the physical memory region for the
-	 * RSDP signature.
-	 */
-	for (offset = 0; offset < length; offset += 16) {
-		if (strncmp((char *)(phys_to_virt(start) + offset), "RSD PTR ", sig_len))
-			continue;
-		return (start + offset);
-	}
-
-	return 0;
-}
-
 static int __init acpi_parse_sbf(struct acpi_table_header *table)
 {
 	struct acpi_table_boot *sb;
@@ -748,27 +729,6 @@ static int __init acpi_parse_fadt(struct acpi_table_header *table)
 	return 0;
 }
 
-unsigned long __init acpi_find_rsdp(void)
-{
-	unsigned long rsdp_phys = 0;
-
-	if (efi_enabled) {
-		if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
-			return efi.acpi20;
-		else if (efi.acpi != EFI_INVALID_TABLE_ADDR)
-			return efi.acpi;
-	}
-	/*
-	 * Scan memory looking for the RSDP signature. First search EBDA (low
-	 * memory) paragraphs and then search upper memory (E0000-FFFFF).
-	 */
-	rsdp_phys = acpi_scan_rsdp(0, 0x400);
-	if (!rsdp_phys)
-		rsdp_phys = acpi_scan_rsdp(0xE0000, 0x20000);
-
-	return rsdp_phys;
-}
-
 #ifdef	CONFIG_X86_LOCAL_APIC
 /*
  * Parse LAPIC entries in MADT

arch/x86/kernel/cpu/cpufreq/speedstep-lib.c

@@ -189,10 +189,7 @@ static unsigned int pentium4_get_frequency(void)
 		printk(KERN_DEBUG "speedstep-lib: couldn't detect FSB speed. Please send an e-mail to <linux@brodo.de>\n");
 
 	/* Multiplier. */
-	if (c->x86_model < 2)
-		mult = msr_lo >> 27;
-	else
-		mult = msr_lo >> 24;
+	mult = msr_lo >> 24;
 
 	dprintk("P4 - FSB %u kHz; Multiplier %u; Speed %u kHz\n", fsb, mult, (fsb * mult));
 

arch/x86/kernel/srat_32.c

@@ -274,7 +274,7 @@ int __init get_memcfg_from_srat(void)
 	int tables = 0;
 	int i = 0;
 
-	rsdp_address = acpi_find_rsdp();
+	rsdp_address = acpi_os_get_root_pointer();
 	if (!rsdp_address) {
 		printk("%s: System description tables not found\n",
 		       __FUNCTION__);

drivers/acpi/blacklist.c

@@ -70,8 +70,6 @@ static struct acpi_blacklist_item acpi_blacklist[] __initdata = {
 	/* IBM 600E - _ADR should return 7, but it returns 1 */
 	{"IBM   ", "TP600E  ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
 	 "Incorrect _ADR", 1},
-	{"ASUS\0\0", "P2B-S   ", 0, ACPI_SIG_DSDT, all_versions,
-	 "Bogus PCI routing", 1},
 
 	{""}
 };

drivers/acpi/debug.c

@@ -130,6 +130,63 @@ static int param_get_debug_level(char *buffer, struct kernel_param *kp) {
 module_param_call(debug_layer, param_set_uint, param_get_debug_layer, &acpi_dbg_layer, 0644);
 module_param_call(debug_level, param_set_uint, param_get_debug_level, &acpi_dbg_level, 0644);
 
+static char trace_method_name[6];
+module_param_string(trace_method_name, trace_method_name, 6, 0644);
+static unsigned int trace_debug_layer;
+module_param(trace_debug_layer, uint, 0644);
+static unsigned int trace_debug_level;
+module_param(trace_debug_level, uint, 0644);
+
+static int param_set_trace_state(const char *val, struct kernel_param *kp)
+{
+	int result = 0;
+
+	if (!strncmp(val, "enable", strlen("enable") - 1)) {
+		result = acpi_debug_trace(trace_method_name, trace_debug_level,
+					  trace_debug_layer, 0);
+		if (result)
+			result = -EBUSY;
+		goto exit;
+	}
+
+	if (!strncmp(val, "disable", strlen("disable") - 1)) {
+		int name = 0;
+		result = acpi_debug_trace((char *)&name, trace_debug_level,
+					  trace_debug_layer, 0);
+		if (result)
+			result = -EBUSY;
+		goto exit;
+	}
+
+	if (!strncmp(val, "1", 1)) {
+		result = acpi_debug_trace(trace_method_name, trace_debug_level,
+					  trace_debug_layer, 1);
+		if (result)
+			result = -EBUSY;
+		goto exit;
+	}
+
+	result = -EINVAL;
+exit:
+	return result;
+}
+
+static int param_get_trace_state(char *buffer, struct kernel_param *kp)
+{
+	if (!acpi_gbl_trace_method_name)
+		return sprintf(buffer, "disable");
+	else {
+		if (acpi_gbl_trace_flags & 1)
+			return sprintf(buffer, "1");
+		else
+			return sprintf(buffer, "enable");
+	}
+	return 0;
+}
+
+module_param_call(trace_state, param_set_trace_state, param_get_trace_state,
+		  NULL, 0644);
+
 /* --------------------------------------------------------------------------
                               FS Interface (/proc)
    -------------------------------------------------------------------------- */

drivers/acpi/ec.c

@@ -573,7 +573,7 @@ acpi_ec_space_handler(u32 function, acpi_physical_address address,
 		      void *handler_context, void *region_context)
 {
 	struct acpi_ec *ec = handler_context;
-	int result = 0, i = 0;
+	int result = 0, i;
 	u8 temp = 0;
 
 	if ((address > 0xFF) || !value || !handler_context)
@@ -585,18 +585,29 @@ acpi_ec_space_handler(u32 function, acpi_physical_address address,
 	if (bits != 8 && acpi_strict)
 		return AE_BAD_PARAMETER;
 
-	while (bits - i > 0) {
+	acpi_ec_burst_enable(ec);
+
+	if (function == ACPI_READ) {
+		result = acpi_ec_read(ec, address, &temp);
+		*value = temp;
+	} else {
+		temp = 0xff & (*value);
+		result = acpi_ec_write(ec, address, temp);
+	}
+
+	for (i = 8; unlikely(bits - i > 0); i += 8) {
+		++address;
 		if (function == ACPI_READ) {
 			result = acpi_ec_read(ec, address, &temp);
 			(*value) |= ((acpi_integer)temp) << i;
 		} else {
 			temp = 0xff & ((*value) >> i);
 			result = acpi_ec_write(ec, address, temp);
 		}
-		i += 8;
-		++address;
 	}
 
+	acpi_ec_burst_disable(ec);
+
 	switch (result) {
 	case -EINVAL:
 		return AE_BAD_PARAMETER;

drivers/acpi/events/evgpe.c

@@ -270,18 +270,18 @@ acpi_status acpi_ev_disable_gpe(struct acpi_gpe_event_info *gpe_event_info)
 	case ACPI_GPE_TYPE_WAKE_RUN:
 		ACPI_CLEAR_BIT(gpe_event_info->flags, ACPI_GPE_WAKE_ENABLED);
 
-		/*lint -fallthrough */
+		/* fallthrough */
 
 	case ACPI_GPE_TYPE_RUNTIME:
 
 		/* Disable the requested runtime GPE */
 
 		ACPI_CLEAR_BIT(gpe_event_info->flags, ACPI_GPE_RUN_ENABLED);
-		status = acpi_hw_write_gpe_enable_reg(gpe_event_info);
-		break;
+
+		/* fallthrough */
 
 	default:
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
+		acpi_hw_write_gpe_enable_reg(gpe_event_info);
 	}
 
 	return_ACPI_STATUS(AE_OK);

drivers/acpi/osl.c

@@ -250,8 +250,12 @@ acpi_physical_address __init acpi_os_get_root_pointer(void)
 			       "System description tables not found\n");
 			return 0;
 		}
-	} else
-		return acpi_find_rsdp();
+	} else {
+		acpi_physical_address pa = 0;
+
+		acpi_find_root_pointer(&pa);
+		return pa;
+	}
 }
 
 void __iomem *acpi_os_map_memory(acpi_physical_address phys, acpi_size size)

drivers/acpi/processor_core.c

@@ -812,11 +812,18 @@ static int is_processor_present(acpi_handle handle)
 
 
 	status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
-	if (ACPI_FAILURE(status) || !(sta & ACPI_STA_DEVICE_PRESENT)) {
-		ACPI_EXCEPTION((AE_INFO, status, "Processor Device is not present"));
-		return 0;
-	}
-	return 1;
+	/*
+	 * 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"));
+	return 0;
 }
 
 static