icera: retry configuring PDP context if it fails.

This is the port to git master of the following commit:

commit fb3187847b9c62d5205962c3c707ac1f44eaddcc
Author: Eric Shienbrood <ers@chromium.org>
Date:   Thu Aug 11 16:58:34 2011 -0400

    icera: retry configuring PDP context if it fails.

    If a connect operation is attempted immediately after a disconnect,
    it sometimes fails with CME error 583 - "a profile (CID) is currently
    active". Apparently, even though the preceding operation (%IPDPACT)
    to deactivate the PDP context returned an OK response, the context
    is not really completely available until a fraction of a second
    later. This causes the %IPDPCFG operation that is part of the
    subsequent connect attempt to fail with error 583. This change
    retries the %IPDPCFG after a one second delay.

    BUG=chrome-os-partner:4936
    TEST=This can be tested from the UI, but I found it easier to produce
    the timing needed to trigger the bug by running mm-disconnect and
    mm-connect from a shell.

    Start out with the modem in the connected state. In the shell, run

      sudo /usr/local/lib/flimflam/test/mm-disconnect; sudo /usr/local/lib/flimflam/test/mm-connect --number='*99#' --apn=wap.cingular

    modem-manager should emit the log line "Invalid error code: 583".
    Prior to this change, the connect operation would fail. Now it should
    succeed.

    Change-Id: I6ae0e6a9f5405b54b0b465fe91d9542529f365c2
    Reviewed-on: http://gerrit.chromium.org/gerrit/5781
    Tested-by: Eric Shienbrood <ers@chromium.org>
    Reviewed-by: Nathan J. Williams <njw@chromium.org>

0 files changed, 0 insertions, 0 deletions