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    SubjectRe: rtc_cmos: error after first write to wakealarm
    On Fri, 15 Jun 2007 08:33:08 +0200
    Tino Keitel <tino.keitel@gmx.de> wrote:

    > Hi,
    >
    > I have the following strange behaviour with rtc_cmos:
    >
    > $ echo 1181934240 > /sys/class/rtc/rtc0/wakealarm
    > bash: echo: write error: Device or resource busy
    > $ rmmod rtc_cmos
    > $ modprobe rtc_cmos
    > $ echo 1181934240 > /sys/class/rtc/rtc0/wakealarm
    > $ echo 1181934240 > /sys/class/rtc/rtc0/wakealarm
    > bash: echo: write error: Device or resource busy
    > $

    If the alarm has already been enabled, you cannot set the next alarm.
    You should disable first.

    Yoichi

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