This patch fixes these sparse warnings:
drivers/rtc/rtc-ds1742.c:265:2: warning: returning void-valued expression
drivers/rtc/rtc-ds1553.c:409:2: warning: returning void-valued expression
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: David Brownell <david-b@pacbell.net>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 
 static __exit void ds1553_exit(void)
 {
-       return platform_driver_unregister(&ds1553_rtc_driver);
+       platform_driver_unregister(&ds1553_rtc_driver);
 }
 
 module_init(ds1553_init);
 
 
 static __exit void ds1742_exit(void)
 {
-       return platform_driver_unregister(&ds1742_rtc_driver);
+       platform_driver_unregister(&ds1742_rtc_driver);
 }
 
 module_init(ds1742_init);