rtc: max8925: Call dev_set_drvdata before rtc_device_register

We call rtc_read_alarm from rtc_device_register, so it is important
that the rtc device is fully initialized prior to registration.

rtc-max8925 sets drvdata after register, so the rtc_read_alarm code
dereferences a NULL pointer.

Call dev_set_drvdata before rtc_device_register.

[ jstultz/tglx: Massaged commit message ]

Signed-off-by: Zhangfei Gao <zhangfei.gao@marvell.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Link: http://lkml.kernel.org/r/%3C1303929869-25249-1-git-send-email-john.stultz%40linaro.org%3E
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/drivers/rtc/rtc-max8925.c b/drivers/rtc/rtc-max8925.c
index 174036d..20494b5 100644 (file)
--- a/drivers/rtc/rtc-max8925.c
+++ b/drivers/rtc/rtc-max8925.c
@@ -257,6 +257,8 @@ static int __devinit max8925_rtc_probe(struct platform_device *pdev)
                goto out_irq;
        }
 
+       dev_set_drvdata(&pdev->dev, info);
+
        info->rtc_dev = rtc_device_register("max8925-rtc", &pdev->dev,
                                        &max8925_rtc_ops, THIS_MODULE);
        ret = PTR_ERR(info->rtc_dev);
@@ -265,7 +267,6 @@ static int __devinit max8925_rtc_probe(struct platform_device *pdev)
                goto out_rtc;
        }
 
-       dev_set_drvdata(&pdev->dev, info);
        platform_set_drvdata(pdev, info);
 
        return 0;