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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2012-11-30 00:43:06 +0400
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2012-11-30 00:43:06 +0400
commitd4c091f13dc4d30e4af43c0ccf8c82b3277574ca (patch)
treec3848194792426370048b1a1cb4ddb3f8b0f1133 /drivers/acpi/sleep.c
parent08ab72980a7747a7615c8ba5a797b651fb1aa976 (diff)
parent261cba2deb7d3bebd180c35d5dbf8961f6e9afc4 (diff)
downloadlinux-d4c091f13dc4d30e4af43c0ccf8c82b3277574ca.tar.xz
Merge branch 'acpi-general'
* acpi-general: (38 commits) ACPI / thermal: _TMP and _CRT/_HOT/_PSV/_ACx dependency fix ACPI: drop unnecessary local variable from acpi_system_write_wakeup_device() ACPI: Fix logging when no pci_irq is allocated ACPI: Update Dock hotplug error messages ACPI: Update Container hotplug error messages ACPI: Update Memory hotplug error messages ACPI: Update CPU hotplug error messages ACPI: Add acpi_handle_<level>() interfaces ACPI: remove use of __devexit ACPI / PM: Add Sony Vaio VPCEB1S1E to nonvs blacklist. ACPI / battery: Correct battery capacity values on Thinkpads Revert "ACPI / x86: Add quirk for "CheckPoint P-20-00" to not use bridge _CRS_ info" ACPI: create _SUN sysfs file ACPI / memhotplug: bind the memory device when the driver is being loaded ACPI / memhotplug: don't allow to eject the memory device if it is being used ACPI / memhotplug: free memory device if acpi_memory_enable_device() failed ACPI / memhotplug: fix memory leak when memory device is unbound from acpi_memhotplug ACPI / memhotplug: deal with eject request in hotplug queue ACPI / memory-hotplug: add memory offline code to acpi_memory_device_remove() ACPI / memory-hotplug: call acpi_bus_trim() to remove memory device ... Conflicts: include/linux/acpi.h (two additions at the end of the same file)
Diffstat (limited to 'drivers/acpi/sleep.c')
-rw-r--r--drivers/acpi/sleep.c25
1 files changed, 24 insertions, 1 deletions
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 13a285dffaca..1e25319164f1 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -103,6 +103,21 @@ void __init acpi_nvs_nosave(void)
}
/*
+ * The ACPI specification wants us to save NVS memory regions during hibernation
+ * but says nothing about saving NVS during S3. Not all versions of Windows
+ * save NVS on S3 suspend either, and it is clear that not all systems need
+ * NVS to be saved at S3 time. To improve suspend/resume time, allow the
+ * user to disable saving NVS on S3 if their system does not require it, but
+ * continue to save/restore NVS for S4 as specified.
+ */
+static bool nvs_nosave_s3;
+
+void __init acpi_nvs_nosave_s3(void)
+{
+ nvs_nosave_s3 = true;
+}
+
+/*
* ACPI 1.0 wants us to execute _PTS before suspending devices, so we allow the
* user to request that behavior by using the 'acpi_old_suspend_ordering'
* kernel command line option that causes the following variable to be set.
@@ -248,7 +263,7 @@ static int acpi_suspend_begin(suspend_state_t pm_state)
u32 acpi_state = acpi_suspend_states[pm_state];
int error = 0;
- error = nvs_nosave ? 0 : suspend_nvs_alloc();
+ error = (nvs_nosave || nvs_nosave_s3) ? 0 : suspend_nvs_alloc();
if (error)
return error;
@@ -524,6 +539,14 @@ static struct dmi_system_id __initdata acpisleep_dmi_table[] = {
},
{
.callback = init_nvs_nosave,
+ .ident = "Sony Vaio VPCEB1S1E",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "VPCEB1S1E"),
+ },
+ },
+ {
+ .callback = init_nvs_nosave,
.ident = "Sony Vaio VGN-FW520F",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),