static int timeout = 1;
static int io = -1;
static int io_len = 2; /* for non plug and play */
-struct semaphore open_sem;
+static struct semaphore open_sem;
static char expect_close;
-spinlock_t sc1200wdt_lock; /* io port access serialisation */
+static spinlock_t sc1200wdt_lock; /* io port access serialisation */
#if defined CONFIG_PNP
static int isapnp = 1;
#if defined CONFIG_PNP
-struct pnp_device_id scl200wdt_pnp_devices[] = {
+static struct pnp_device_id scl200wdt_pnp_devices[] = {
/* National Semiconductor PC87307/PC97307 watchdog component */
{.id = "NSC0800", .driver_data = 0},
{.id = ""},