to_write -= dev->hard_header_len;
}
- err = -EFAULT;
offset = offset_in_page(data);
len_max = PAGE_SIZE - offset;
len = ((to_write > len_max) ? len_max : to_write);
mutex_lock(&po->pg_vec_lock);
- err = -EBUSY;
if (saddr == NULL) {
dev = po->prot_hook.dev;
proto = po->num;