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| author | Qianyu Gong <qianyu.gong@nxp.com> | 2016-04-21 14:55:40 +0800 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@free-electrons.com> | 2016-05-20 12:33:51 +0200 |
| commit | b4b77f3c280e38cec178f81d7a4d7e65f4045913 (patch) | |
| tree | ad6ae0b1dbb8cf4096a1ad03080c18ab7a34c70e /drivers/rtc/rtc-ds3232.c | |
| parent | a350259da4b0556fcf276c506a14f406d608c2b3 (diff) | |
| download | lwn-b4b77f3c280e38cec178f81d7a4d7e65f4045913.tar.gz lwn-b4b77f3c280e38cec178f81d7a4d7e65f4045913.zip | |
rtc: ds3232: fix call trace when rtc->ops_lock is used as NULL
The rtc->ops_lock would be accessed in ds3232_irq() without being
initialized as rtc_device_register() is called too late.
So move devm_rtc_device_register() just before registering irq handler
to initialize rtc->ops_lock earlier.
Signed-off-by: Gong Qianyu <Qianyu.Gong@nxp.com>
Reviewed-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Diffstat (limited to 'drivers/rtc/rtc-ds3232.c')
| -rw-r--r-- | drivers/rtc/rtc-ds3232.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/rtc/rtc-ds3232.c b/drivers/rtc/rtc-ds3232.c index 7edc889729c5..04fbd7fffd0d 100644 --- a/drivers/rtc/rtc-ds3232.c +++ b/drivers/rtc/rtc-ds3232.c @@ -369,6 +369,11 @@ static int ds3232_probe(struct device *dev, struct regmap *regmap, int irq, if (ret) return ret; + ds3232->rtc = devm_rtc_device_register(dev, name, &ds3232_rtc_ops, + THIS_MODULE); + if (IS_ERR(ds3232->rtc)) + return PTR_ERR(ds3232->rtc); + if (ds3232->irq > 0) { ret = devm_request_threaded_irq(dev, ds3232->irq, NULL, ds3232_irq, @@ -380,10 +385,8 @@ static int ds3232_probe(struct device *dev, struct regmap *regmap, int irq, } else device_init_wakeup(dev, 1); } - ds3232->rtc = devm_rtc_device_register(dev, name, &ds3232_rtc_ops, - THIS_MODULE); - return PTR_ERR_OR_ZERO(ds3232->rtc); + return 0; } #ifdef CONFIG_PM_SLEEP |