[ewg] IB/qib: Correct nfreectxts for multiple HCAs

[Mike Marciniszyn]

Vlad,

Please pull the following patches from
git.openfabrics.org/~mmarciniszyn/scm/linux-2.6.to_ofed

Thanks!
Mike

commit 6d13d18acfea76fbfa823b4c7f3bf57a1da2f39e
Author: Mike Marciniszyn <mike.marciniszyn at qlogic.com>
Date:   Wed Sep 21 12:31:12 2011 -0400

    IB/qib: Correct nfreectxts for multiple HCAs

    The code that was recently introduced to report the number
    of free contexts is flawed for multiple HCAs:

           /* Return the number of free user ports (contexts) available. */
            return scnprintf(buf, PAGE_SIZE, "%u\n", dd->cfgctxts -
                    dd->first_user_ctxt - (u32)qib_stats.sps_ctxts);

    The qib_stats is global to the module, not per HCA, so the code is broken
    for multiple HCAs.

    This patch adds a qib_devdata field, freectxts, that reflects the free
    contexts for this HCA.

    Signed-off-by: Mike Marciniszyn <mike.marciniszyn at qlogic.com>
    Reviewed-by: Ram Vepa <ram.vepa at qlogic.com>

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