tree 38ad9e7bbb8b37e352d1810a4b48167838615504
parent 9a281a677c1dbf25943b5bc3225de21fcb4945ae
author John Stultz <john.stultz@linaro.org> 1304727867 -0700
committer John Stultz <john.stultz@linaro.org> 1304730062 -0700

rtc: m41t80: Initialize clientdata before registering device

Commit f44f7f96a20 ("RTC: Initialize kernel state from RTC") uncovered
an issue in a number of RTC drivers, where the drivers call
rtc_device_register before initializing the clientdata.

This frequently results in null pointer dereferences when the
rtc_device_register immediately makes use of the rtc device, calling
rtc_read_alarm.

The solution is to ensure the clientdata is initialized prior to registering
the rtc device.

CC: Wolfram Sang <w.sang@pengutronix.de>
CC: Alessandro Zummo <a.zummo@towertech.it>
CC: Thomas Gleixner <tglx@linutronix.de>
CC: rtc-linux@googlegroups.com
Signed-off-by: John Stultz <john.stultz@linaro.org>