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    SubjectRe: rtc_cmos: error after first write to wakealarm
    On Fri, Jun 15, 2007 at 15:59:04 +0900, Yoichi Yuasa wrote:
    > 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.

    Ah, ok.

    Where is the documentation that describes that I have to disable it
    first, and how to do this? A migration document for /proc/acpi/alarm
    users would be nice, too.

    Regards,
    Tino
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