linux-kernel - [PATCH 1/2] rtc: rtc-mrst: follow on to the change of rtc_device

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Message-Id: <1302140384-27571-1-git-send-email-feng.tang@intel.com>
Date:	Thu,  7 Apr 2011 09:39:44 +0800
From:	Feng Tang <feng.tang@...el.com>
To:	linux-kernel@...r.kernel.org, tglx@...utronix.de,
	alan@...ux.intel.com
Cc:	Feng Tang <feng.tang@...el.com>,
	Alessandro Zummo <a.zummo@...ertech.it>,
	John Stultz <john.stultz@...aro.org>
Subject: [PATCH 1/2] rtc: rtc-mrst: follow on to the change of rtc_device_register()

commit f44f7f96a20 (RTC: Initialize kernel state from RTC) will
call rtc_read_alarm() inside rtc_device_register(), so rtc-mrst
driver need to call dev_set_drvdata() before rtc_device_register()
get called.

Cc: Alessandro Zummo <a.zummo@...ertech.it>
Cc: John Stultz <john.stultz@...aro.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Feng Tang <feng.tang@...el.com>
---
 drivers/rtc/rtc-mrst.c |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/rtc/rtc-mrst.c b/drivers/rtc/rtc-mrst.c
index 332a2c4..b2f0968 100644
--- a/drivers/rtc/rtc-mrst.c
+++ b/drivers/rtc/rtc-mrst.c
@@ -342,6 +342,8 @@ vrtc_mrst_do_probe(struct device *dev, struct resource *iomem, int rtc_irq)
 
 	mrst_rtc.irq = rtc_irq;
 	mrst_rtc.iomem = iomem;
+	mrst_rtc.dev = dev;
+	dev_set_drvdata(dev, &mrst_rtc);
 
 	mrst_rtc.rtc = rtc_device_register(driver_name, dev,
 				&mrst_rtc_ops, THIS_MODULE);
@@ -350,8 +352,6 @@ vrtc_mrst_do_probe(struct device *dev, struct resource *iomem, int rtc_irq)
 		goto cleanup0;
 	}
 
-	mrst_rtc.dev = dev;
-	dev_set_drvdata(dev, &mrst_rtc);
 	rename_region(iomem, dev_name(&mrst_rtc.rtc->dev));
 
 	spin_lock_irq(&rtc_lock);
@@ -376,9 +376,10 @@ vrtc_mrst_do_probe(struct device *dev, struct resource *iomem, int rtc_irq)
 	return 0;
 
 cleanup1:
-	mrst_rtc.dev = NULL;
 	rtc_device_unregister(mrst_rtc.rtc);
 cleanup0:
+	dev_set_drvdata(dev, NULL);
+	mrst_rtc.dev = NULL;
 	release_region(iomem->start, iomem->end + 1 - iomem->start);
 	dev_err(dev, "rtc-mrst: unable to initialise\n");
 	return retval;
-- 
1.7.0.4

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