*/
#include <linux/device.h>
+#include <linux/kallsyms.h>
+#include <linux/pm.h>
+#include "../base.h"
#include "power.h"
-extern int sysdev_suspend(pm_message_t state);
-
/*
* The entries in the dpm_active list are in a depth first order, simply
* because children are guaranteed to be discovered after parents, and
{
int error = 0;
- if (dev->power.power_state) {
+ down(&dev->sem);
+ if (dev->power.power_state.event) {
dev_dbg(dev, "PM: suspend %d-->%d\n",
- dev->power.power_state, state);
+ dev->power.power_state.event, state.event);
}
if (dev->power.pm_parent
- && dev->power.pm_parent->power.power_state) {
+ && dev->power.pm_parent->power.power_state.event) {
dev_err(dev,
"PM: suspend %d->%d, parent %s already %d\n",
- dev->power.power_state, state,
+ dev->power.power_state.event, state.event,
dev->power.pm_parent->bus_id,
- dev->power.pm_parent->power.power_state);
+ dev->power.pm_parent->power.power_state.event);
}
dev->power.prev_state = dev->power.power_state;
- if (dev->bus && dev->bus->suspend && !dev->power.power_state) {
+ if (dev->bus && dev->bus->suspend && !dev->power.power_state.event) {
dev_dbg(dev, "suspending\n");
error = dev->bus->suspend(dev, state);
+ suspend_report_result(dev->bus->suspend, error);
}
-
+ up(&dev->sem);
return error;
}
put_device(dev);
}
up(&dpm_list_sem);
- if (error)
+ if (error) {
+ /* we failed... before resuming, bring back devices from
+ * dpm_off_irq list back to main dpm_off list, we do want
+ * to call resume() on them, in case they partially suspended
+ * despite returning -EAGAIN
+ */
+ while (!list_empty(&dpm_off_irq)) {
+ struct list_head * entry = dpm_off_irq.next;
+ list_del(entry);
+ list_add(entry, &dpm_off);
+ }
dpm_resume();
+ }
up(&dpm_sem);
return error;
}
EXPORT_SYMBOL_GPL(device_power_down);
+void __suspend_report_result(const char *function, void *fn, int ret)
+{
+ if (ret) {
+ printk(KERN_ERR "%s(): ", function);
+ print_fn_descriptor_symbol("%s() returns ", (unsigned long)fn);
+ printk("%d\n", ret);
+ }
+}
+EXPORT_SYMBOL_GPL(__suspend_report_result);