Pull 5571 into release branch
diff --git a/arch/i386/kernel/acpi/boot.c b/arch/i386/kernel/acpi/boot.c
index 76b1135..447fa9e 100644
--- a/arch/i386/kernel/acpi/boot.c
+++ b/arch/i386/kernel/acpi/boot.c
@@ -638,6 +638,13 @@
return 0;
pmtmr_ioport = fadt->xpm_tmr_blk.address;
+ /*
+ * "X" fields are optional extensions to the original V1.0
+ * fields, so we must selectively expand V1.0 fields if the
+ * corresponding X field is zero.
+ */
+ if (!pmtmr_ioport)
+ pmtmr_ioport = fadt->V1_pm_tmr_blk;
} else {
/* FADT rev. 1 */
pmtmr_ioport = fadt->V1_pm_tmr_blk;
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index fe1e812..fce21c2 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -197,7 +197,6 @@
config ACPI_IBM
tristate "IBM ThinkPad Laptop Extras"
depends on X86
- default y
---help---
This is a Linux ACPI driver for the IBM ThinkPad laptops. It adds
support for Fn-Fx key combinations, Bluetooth control, video
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index a182434..5984b4f 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -16,7 +16,7 @@
# ACPI Boot-Time Table Parsing
#
obj-y += tables.o
-obj-y += blacklist.o
+obj-$(CONFIG_X86) += blacklist.o
#
# ACPI Core Subsystem (Interpreter)
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 70d8a6e..83fd1b6 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -280,6 +280,16 @@
cx->usage++;
+#ifdef CONFIG_HOTPLUG_CPU
+ /*
+ * Check for P_LVL2_UP flag before entering C2 and above on
+ * an SMP system. We do it here instead of doing it at _CST/P_LVL
+ * detection phase, to work cleanly with logical CPU hotplug.
+ */
+ if ((cx->type != ACPI_STATE_C1) && (num_online_cpus() > 1) &&
+ !pr->flags.has_cst && acpi_fadt.plvl2_up)
+ cx->type = ACPI_STATE_C1;
+#endif
/*
* Sleep:
* ------
@@ -534,6 +544,15 @@
pr->power.states[ACPI_STATE_C0].valid = 1;
pr->power.states[ACPI_STATE_C1].valid = 1;
+#ifndef CONFIG_HOTPLUG_CPU
+ /*
+ * Check for P_LVL2_UP flag before entering C2 and above on
+ * an SMP system.
+ */
+ if ((num_online_cpus() > 1) && acpi_fadt.plvl2_up)
+ return_VALUE(-ENODEV);
+#endif
+
/* determine C2 and C3 address from pblk */
pr->power.states[ACPI_STATE_C2].address = pr->pblk + 4;
pr->power.states[ACPI_STATE_C3].address = pr->pblk + 5;
@@ -690,7 +709,7 @@
/* Validate number of power states discovered */
if (pr->power.count < 2)
- status = -ENODEV;
+ status = -EFAULT;
end:
acpi_os_free(buffer.pointer);
@@ -841,11 +860,11 @@
* this function */
result = acpi_processor_get_power_info_cst(pr);
- if ((result) || (acpi_processor_power_verify(pr) < 2)) {
+ if (result == -ENODEV)
result = acpi_processor_get_power_info_fadt(pr);
- if ((result) || (acpi_processor_power_verify(pr) < 2))
- result = acpi_processor_get_power_info_default_c1(pr);
- }
+
+ if ((result) || (acpi_processor_power_verify(pr) < 2))
+ result = acpi_processor_get_power_info_default_c1(pr);
/*
* Set Default Policy
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 23e2c69..31218e1 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -1110,7 +1110,7 @@
*
* TBD: Assumes LDM provides driver hot-plug capability.
*/
- result = acpi_bus_find_driver(device);
+ acpi_bus_find_driver(device);
end:
if (!result)