int pre_hibernate(void)
{
int err = 0;
hib_ftrace_buffer(0);
/* check free memory status. */
if (bad_memory_status()) {
err = -1;
goto ERR;
}
/* Adding userspace program stuffs here before hibernation start */
/* ... */
/* end of adding userspace program stuffs */
/* CAUTION: put any stuff of actions before this line !! */
if (!err) {
/* flag to prevent suspend to ram */
system_is_hibernating = true;
/* hotplug disable */
hib_hotplug_mode(0);
}
ERR:
pm_wake_unlock("IPOD_HIB_WAKELOCK");
return err;
}
static ssize_t wake_unlock_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t n)
{
int error = pm_wake_unlock(buf);
return error ? error : n;
}
int pre_hibernate(void)
{
int err = 0;
// flag to prevent suspend to ram
system_is_hibernating = true;
pm_wake_unlock("IPOD_HIB_WAKELOCK");
// user space program stuffs before hibernation start
return err;
}