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    SubjectRe: [rtc-linux] Re: rtc_cmos: error after first write to wakealarm
    On Fri, 15 Jun 2007 09:03:19 +0200
    Tino Keitel <tino.keitel@gmx.de> wrote:

    > > > 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.

    Well, I guess there is no documentation. Maybe we could add
    a dev_warn with an explicit message.


    --

    Best regards,

    Alessandro Zummo,
    Tower Technologies - Torino, Italy

    http://www.towertech.it

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