-static ssize_t acpi_system_read_fadt (struct file*, char __user *, size_t, loff_t*);
-
-static struct file_operations acpi_system_fadt_ops = {
- .read = acpi_system_read_fadt,
+static const struct file_operations acpi_system_fadt_ops = {
+ .read = acpi_system_read_fadt,