static inline int user_regset_copyin_ignore(unsigned int *pos,
					    unsigned int *count,
					    const void **kbuf,
					    const void __user **ubuf,
					    const int start_pos,
					    const int end_pos)
{
	if (*count == 0)
		return 0;
	BUG_ON(*pos < start_pos);
	if (end_pos < 0 || *pos < end_pos) {
		unsigned int copy = (end_pos < 0 ? *count
				     : min(*count, end_pos - *pos));
		if (*kbuf)
			*kbuf += copy;
		else
			*ubuf += copy;
		*pos += copy;
		*count -= copy;
	}
	return 0;
}
static inline int user_regset_copyin_ignore(unsigned int *pos,
					    unsigned int *count,
					    const void **kbuf,
					    const void __user **ubuf,
					    const int start_pos,
					    const int end_pos)
{
	if (*count == 0)
		return 0;
	BUG_ON(*pos < start_pos);
	if (end_pos < 0 || *pos < end_pos) {
		unsigned int copy = (end_pos < 0 ? *count
				     : min(*count, end_pos - *pos));
		if (*kbuf)
			*kbuf += copy;
		else
			*ubuf += copy;
		*pos += copy;
		*count -= copy;
	}
	return 0;
}