From: Bryan Kadzban <bryan@kdzbn.homelinux.net>
Date: Tue, 16 Oct 2007 08:28:22 +0000 (-0700)
Subject: rtc: add max_user_freq to sysfs
X-Git-Tag: v2.6.24-rc1~962
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=06c65eb45578c52d1bc69d044239646d4c90e7ea;p=pandora-kernel.git

rtc: add max_user_freq to sysfs

drivers/char/rtc.c exposed a sysctl to change the maximum frequency at
which a non-root user could ask the RTC to generate interrupts (via the
RTC_IRQP_SET ioctl).  This value is no longer available under the new RTC
subsystem, so add it to sysfs for each RTC device.

Works for me on x86_64 (both reads and writes), using rtc-cmos.

Signed-off-by: Bryan Kadzban <bryan@kdzbn.homelinux.net>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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