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@towertech.it>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>

diff --git a/drivers/rtc/rtc-mrst.c b/drivers/rtc/rtc-mrst.c
index b86bc32..d2c397c 100644 (file)
--- 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;