--- zzzz-none-000/linux-3.10.107/drivers/watchdog/sc520_wdt.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/watchdog/sc520_wdt.c	2021-02-04 17:41:59.000000000 +0000
@@ -158,12 +158,11 @@
 
 static void wdt_config(int writeval)
 {
-	__u16 dummy;
 	unsigned long flags;
 
 	/* buy some time (ping) */
 	spin_lock_irqsave(&wdt_spinlock, flags);
-	dummy = readw(wdtmrctl);	/* ensure write synchronization */
+	readw(wdtmrctl);	/* ensure write synchronization */
 	writew(0xAAAA, wdtmrctl);
 	writew(0x5555, wdtmrctl);
 	/* unlock WDT = make WDT configuration register writable one time */
@@ -433,4 +432,3 @@
 MODULE_DESCRIPTION(
 	"Driver for watchdog timer in AMD \"Elan\" SC520 uProcessor");
 MODULE_LICENSE("GPL");
-MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);