[WATCHDOG] ibmasr: remove unnecessary spin_unlock()

__asr_toggle() is always called with asr_lock held.
But there is unnecessary spin_unlock() call in __asr_toggle().

Signed-off-by: Akinobu Mita <[e-mail]>
Signed-off-by: Wim Van Sebroeck <[e-mail]>
Acked-by: Andrey Panin <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>

drivers/watchdog/ibmasr.c

···
 
 	outb(reg & ~asr_toggle_mask, asr_write_addr);
 	reg = inb(asr_read_addr);
-	spin_unlock(&asr_lock);
 }
 
 static void asr_toggle(void)