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    SubjectRe: ath5k regression associating with APs in 2.6.38
    From
    2011/5/4 Seth Forshee <seth.forshee@canonical.com>:
    > On Wed, May 04, 2011 at 01:27:17PM -0400, John W. Linville wrote:
    >> On Wed, May 04, 2011 at 10:38:19AM -0500, Seth Forshee wrote:
    >> > I've been investigating some reports of a regression in associating with
    >> > APs with AR2413 in 2.6.38. Association repeatedly fails with some
    >> > "direct probe to x timed out" messages (see syslog excerpt below),
    >> > although it will generally associate eventually, after many tries.
    >> >
    >> > Bisection identifies 8aec7af (ath5k: Support synth-only channel change
    >> > for AR2413/AR5413) as offending commit. Prior to this commit there are
    >> > no direct probe messages at all in the logs. I've also found that
    >> > forcing fast to false at the top of ath5k_hw_reset() fixes the issue.
    >> > I'm not sure what the connection is between this commit and the
    >> > timeouts. Any suggestions?
    >>
    >> Have you tried reverting that commit on top of 2.6.38?  Can you
    >> recreate the issue with 2.6.39-rc6 (or later)?
    >
    > I started to revert that commit, but it wasn't straight-forward due to
    > later changes. Forcing fast to false in ath5k_hw_reset() acts as a
    > functional revert of sorts since that should force it back to a full
    > reset for all channel changes, and it's much simpler than working out
    > the right way to revert the commit. I think the results suggest strongly
    > that a revert is likely to fix the problem. I can finish the work to
    > revert if you'd still like to see the results.
    >
    > Testing a previous .39-rc kernel still exhibited the failure. I don't
    > recall which one it was and apparently forgot to make note of it. I'll
    > request testing against rc6.
    >
    > Thanks,
    > Seth
    >

    Do you get scan results ?
    Can you enable ATH5K_DEBUG_RESET and see what you get ?

    --
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    Nick
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