-static ssize_t acpi_system_read_dsdt (struct file*, char*, size_t, loff_t*);
+static struct file_operations acpi_system_info_ops = {
+ .open = acpi_system_info_open_fs,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static ssize_t acpi_system_read_dsdt (struct file*, char __user *, size_t, loff_t*);