watchdog: sc520_wdt: Remove unused variable

Variable "dummy" is not used anywhere in the function wdt_config().
This patch removes this variable.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

diff --git a/drivers/watchdog/sc520_wdt.c b/drivers/watchdog/sc520_wdt.c
index f353e18b1a82fc65221a0dcf9efa7bf696eedbe3..1cfd3f6a13d5f428adebe5a7b3e030b155f06a44 100644 (file)
--- a/drivers/watchdog/sc520_wdt.c
+++ b/drivers/watchdog/sc520_wdt.c
@@ -158,12 +158,11 @@ static void wdt_timer_ping(unsigned long data)
 
 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 */