From: Wolfram Sang <w.sang@pengutronix.de>
Date: Wed, 25 May 2011 10:56:51 +0000 (+0200)
Subject: rtc: stmp3xxx: Initialize drvdata before registering device
X-Git-Tag: v3.1-rc1~295^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a91d2bab355f3a5caa767d7316f80422bfcd2ad6;p=pandora-kernel.git

rtc: stmp3xxx: Initialize drvdata 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 device or platform drvdata.

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 drvdata is initialized prior to registering
the rtc device.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Tested-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
---

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