[PATCH] rtc subsystem: add capability checks

Centralize CAP_SYS_XXX checks to avoid duplicate code and missing checks in
the drivers.

Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c
index 413c7d5..5396bee 100644
--- a/drivers/rtc/class.c
+++ b/drivers/rtc/class.c
@@ -69,6 +69,7 @@
 	rtc->id = id;
 	rtc->ops = ops;
 	rtc->owner = owner;
+	rtc->max_user_freq = 64;
 	rtc->class_dev.dev = dev;
 	rtc->class_dev.class = rtc_class;
 	rtc->class_dev.release = rtc_device_release;