RE: [PATCH] rtc: mxc_v2: unlock on error in mxc_rtc_set_alarm()

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>From: Dan Carpenter [mailto:dan.carpenter@xxxxxxxxxx]
>Sent: Mittwoch, 14. März 2018 08:37
>
>We need to unlock if time is more than U32_MAX.
>
you are right, that's a bug.
But I would move the mxc_rtc_lock() entirely behind the (time > U32_MAX) check. IMHO that would make the code even cleaner. sorry for broken patch:

>       const time64_t time = rtc_tm_to_time64(&alrm->time);
>       struct mxc_rtc_data *pdata = dev_get_drvdata(dev);
>-      int ret = mxc_rtc_lock(pdata);
>+      int ret;
>-
>-      if (ret)
>-              return ret;
>
>       if (time > U32_MAX) {
>               dev_err(dev, "Hopefully I am out of service by then :-(\n");
>               return -EINVAL;
>       }
>+
>+      ret = mxc_rtc_lock(pdata);
>+      if (ret)
>+              return ret;

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