Re: [Linuxptp-users] [E1000-devel] Need help with igb driver suspend crash issue

[Keller, J. E <jac...@in...>]

On Wed, 2016-05-11 at 23:13 +0530, vidya sagar wrote:
> I added the dump_stack() to see the full flow as the error print
> "PCIe link lost, device now detached" is there as part of igb_rd32()
> API which is called at many places. Are we not supposed to 'cancel
> delayed work of igb_ptp_overflow_check() when system goes to suspend
> state (and schedule when system resumes)?


It is probably because we're triggering a surprise removal event which
we shouldn't be doing. It likely happens because of the suspend which
puts is part way through this state, and we need to disable the
overflow check and re-enable it at a resume time, yep.

Thanks,
Jake