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-rw-r--r--drivers/base/power/resume.c13
-rw-r--r--drivers/base/power/suspend.c12
-rw-r--r--include/linux/device.h2
3 files changed, 26 insertions, 1 deletions
diff --git a/drivers/base/power/resume.c b/drivers/base/power/resume.c
index 020be36705a..a2c64188d71 100644
--- a/drivers/base/power/resume.c
+++ b/drivers/base/power/resume.c
@@ -26,7 +26,9 @@ int resume_device(struct device * dev)
TRACE_DEVICE(dev);
TRACE_RESUME(0);
+
down(&dev->sem);
+
if (dev->power.pm_parent
&& dev->power.pm_parent->power.power_state.event) {
dev_err(dev, "PM: resume from %d, parent %s still %d\n",
@@ -34,15 +36,24 @@ int resume_device(struct device * dev)
dev->power.pm_parent->bus_id,
dev->power.pm_parent->power.power_state.event);
}
+
if (dev->bus && dev->bus->resume) {
dev_dbg(dev,"resuming\n");
error = dev->bus->resume(dev);
}
- if (dev->class && dev->class->resume) {
+
+ if (!error && dev->type && dev->type->resume) {
+ dev_dbg(dev,"resuming\n");
+ error = dev->type->resume(dev);
+ }
+
+ if (!error && dev->class && dev->class->resume) {
dev_dbg(dev,"class resume\n");
error = dev->class->resume(dev);
}
+
up(&dev->sem);
+
TRACE_RESUME(error);
return error;
}
diff --git a/drivers/base/power/suspend.c b/drivers/base/power/suspend.c
index ece136bf97e..42d2b86ba76 100644
--- a/drivers/base/power/suspend.c
+++ b/drivers/base/power/suspend.c
@@ -78,6 +78,18 @@ int suspend_device(struct device * dev, pm_message_t state)
suspend_report_result(dev->class->suspend, error);
}
+ if (!error && dev->type && dev->type->suspend && !dev->power.power_state.event) {
+ dev_dbg(dev, "%s%s\n",
+ suspend_verb(state.event),
+ ((state.event == PM_EVENT_SUSPEND)
+ && device_may_wakeup(dev))
+ ? ", may wakeup"
+ : ""
+ );
+ error = dev->type->suspend(dev, state);
+ suspend_report_result(dev->type->suspend, error);
+ }
+
if (!error && dev->bus && dev->bus->suspend && !dev->power.power_state.event) {
dev_dbg(dev, "%s%s\n",
suspend_verb(state.event),
diff --git a/include/linux/device.h b/include/linux/device.h
index c9dc458e8e5..af603a13769 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -344,6 +344,8 @@ struct device_type {
int (*uevent)(struct device *dev, char **envp, int num_envp,
char *buffer, int buffer_size);
void (*release)(struct device *dev);
+ int (*suspend)(struct device * dev, pm_message_t state);
+ int (*resume)(struct device * dev);
};
/* interface for exporting device attributes */