Merge "PM / hibernate: Make passing hibernate offsets more friendly"

 * see the FAQ below for details.  (This is not true for more traditional

 * power states like "standby", which normally don't turn USB off.)

Swap partition:

You need to append resume=/dev/your_swap_partition to kernel command

line. Then you suspend by

line or specify it using /sys/power/resume.

Swap file:

If using a swapfile you can also specify a resume offset using

resume_offset=<number> on the kernel command line or specify it

in /sys/power/resume_offset.

After preparing then you suspend by

echo shutdown > /sys/power/disk; echo disk > /sys/power/state

power_attr(resume);

static ssize_t resume_offset_show(struct kobject *kobj,

				  struct kobj_attribute *attr, char *buf)

{

	return sprintf(buf, "%llu\n", (unsigned long long)swsusp_resume_block);

}

static ssize_t resume_offset_store(struct kobject *kobj,

				   struct kobj_attribute *attr, const char *buf,

				   size_t n)

{

	unsigned long long offset;

	int rc;

	rc = kstrtoull(buf, 0, &offset);

	if (rc)

		return rc;

	swsusp_resume_block = offset;

	return n;

}

power_attr(resume_offset);

static ssize_t image_size_show(struct kobject *kobj, struct kobj_attribute *attr,

			       char *buf)

{

static struct attribute * g[] = {

	&disk_attr.attr,

	&resume_offset_attr.attr,

	&resume_attr.attr,

	&image_size_attr.attr,

	&reserved_size_attr.attr,