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Bug#595717: please enable PPS_CLIENT_LDISC and PPS_CLIENT_KTIMER



Package: linux-2.6
Version: 2.6.35-1~experimental.2
Severity: wishlist

hi,

i'd like to request that the PPS client modules be enabled:

    $ grep CONFIG_PPS_CLIENT /boot/config-2.6.35-trunk-amd64
    # CONFIG_PPS_CLIENT_KTIMER is not set
    # CONFIG_PPS_CLIENT_LDISC is not set
    $

the current linux-image packages ship with CONFIG_PPS=m set, but
unfortunately this is a bit useless without the client modules as well:

    config PPS_CLIENT_KTIMER
            tristate "Kernel timer client (Testing client, use for debug)"
            help
              If you say yes here you get support for a PPS debugging client
              which uses a kernel timer to generate the PPS signal.

              This driver can also be built as a module.  If so, the module
              will be called pps-ktimer.

    config PPS_CLIENT_LDISC
            tristate "PPS line discipline"
            depends on PPS
            help
              If you say yes here you get support for a PPS source connected
              with the CD (Carrier Detect) pin of your serial port.

PPS_CLIENT_LDISC in particular is needed if you want to attach a
stratum-0 NTP time source (GPS with pulse-per-second line attached to
the CD pin) to a debian host, e.g.:

    http://time.qnan.org/
    http://wiki.enneenne.com/index.php/LinuxPPS_installation

an almost identical bug was reported in the fedora bugzilla, btw:

    https://bugzilla.redhat.com/show_bug.cgi?id=619392

thanks!

-- 
Robert Edmonds
edmonds@debian.org

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