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-rw-r--r--drivers/acpi/osl.c2
-rw-r--r--drivers/acpi/sleep.c16
-rw-r--r--include/linux/suspend.h2
-rw-r--r--kernel/power/suspend.c21
4 files changed, 39 insertions, 2 deletions
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 3abe9b2..5ca29b5 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -825,7 +825,7 @@ acpi_os_install_interrupt_handler(u32 gsi, acpi_osd_handler handler,
acpi_irq_handler = handler;
acpi_irq_context = context;
- if (request_irq(irq, acpi_irq, IRQF_SHARED | IRQF_NO_SUSPEND, "acpi", acpi_irq)) {
+ if (request_irq(irq, acpi_irq, IRQF_SHARED, "acpi", acpi_irq)) {
printk(KERN_ERR PREFIX "SCI (IRQ%d) allocation failed\n", irq);
acpi_irq_handler = NULL;
return AE_NOT_ACQUIRED;
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 54da4a3..05a31b5 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -14,6 +14,7 @@
#include <linux/irq.h>
#include <linux/dmi.h>
#include <linux/device.h>
+#include <linux/interrupt.h>
#include <linux/suspend.h>
#include <linux/reboot.h>
#include <linux/acpi.h>
@@ -626,6 +627,19 @@ static int acpi_freeze_begin(void)
return 0;
}
+static int acpi_freeze_prepare(void)
+{
+ acpi_enable_all_wakeup_gpes();
+ enable_irq_wake(acpi_gbl_FADT.sci_interrupt);
+ return 0;
+}
+
+static void acpi_freeze_restore(void)
+{
+ disable_irq_wake(acpi_gbl_FADT.sci_interrupt);
+ acpi_enable_all_runtime_gpes();
+}
+
static void acpi_freeze_end(void)
{
acpi_scan_lock_release();
@@ -633,6 +647,8 @@ static void acpi_freeze_end(void)
static const struct platform_freeze_ops acpi_freeze_ops = {
.begin = acpi_freeze_begin,
+ .prepare = acpi_freeze_prepare,
+ .restore = acpi_freeze_restore,
.end = acpi_freeze_end,
};
diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index 06a9910..3388c1b 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -189,6 +189,8 @@ struct platform_suspend_ops {
struct platform_freeze_ops {
int (*begin)(void);
+ int (*prepare)(void);
+ void (*restore)(void);
void (*end)(void);
};
diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c
index a25e768..4ca9a33 100644
--- a/kernel/power/suspend.c
+++ b/kernel/power/suspend.c
@@ -144,6 +144,12 @@ static int platform_suspend_prepare(suspend_state_t state)
suspend_ops->prepare() : 0;
}
+static int platform_suspend_prepare_late(suspend_state_t state)
+{
+ return state == PM_SUSPEND_FREEZE && freeze_ops->prepare ?
+ freeze_ops->prepare() : 0;
+}
+
static int platform_suspend_prepare_noirq(suspend_state_t state)
{
return state != PM_SUSPEND_FREEZE && suspend_ops->prepare_late ?
@@ -156,6 +162,12 @@ static void platform_resume_noirq(suspend_state_t state)
suspend_ops->wake();
}
+static void platform_resume_early(suspend_state_t state)
+{
+ if (state == PM_SUSPEND_FREEZE && freeze_ops->restore)
+ freeze_ops->restore();
+}
+
static void platform_resume_finish(suspend_state_t state)
{
if (state != PM_SUSPEND_FREEZE && suspend_ops->finish)
@@ -270,10 +282,14 @@ static int suspend_enter(suspend_state_t state, bool *wakeup)
printk(KERN_ERR "PM: late suspend of devices failed\n");
goto Platform_finish;
}
+ error = platform_suspend_prepare_late(state);
+ if (error)
+ goto Devices_early_resume;
+
error = dpm_suspend_noirq(PMSG_SUSPEND);
if (error) {
printk(KERN_ERR "PM: noirq suspend of devices failed\n");
- goto Devices_early_resume;
+ goto Platform_early_resume;
}
error = platform_suspend_prepare_noirq(state);
if (error)
@@ -326,6 +342,9 @@ static int suspend_enter(suspend_state_t state, bool *wakeup)
platform_resume_noirq(state);
dpm_resume_noirq(PMSG_RESUME);
+ Platform_early_resume:
+ platform_resume_early(state);
+
Devices_early_resume:
dpm_resume_early(PMSG_RESUME);
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