RE: [isci PATCH v3 3/4] libsas: suspend / resume support

["Jack Wang" <jack_wang@xxxxxxxxx>]

> 
> 2012/3/16 Jack Wang <jack_wang@xxxxxxxxx>:
> > Dan,
> >
> > I found problem about SATA error handle and this also led to panic when run
> suspend/resume test. Thanks again for your share debug method and patch of
> testing suspend/resume problem.
> >
> > The problem is:
> >
> > When probe libata probe sata will try to reset device and send IDENTIFY DEVICE..
> commands when 3 times fail will give up but never tell libsas and lldd to clean
> up the resource. And if some time later the device came up report BROADCAST
> CHANGE and libsas found device try to  tell lldd, but lldd is not forget the
> original one will reject this.
> > Should we export sas_unregister_devs_sas_addr let ata call this when give
> up.
> 
> Have a look at "libsas: fix ata_eh clobbering ex_phys via
> smp_ata_check_ready" [1], this fixed up cases where libsas failed to
> handle ata device unplug in our environment.
> 
> --
> Dan
> 
> [1]: http://marc.info/?l=linux-scsi&m=133239709603452&w=2
[Jack Wang] 
Thanks Dan, we are testing your new patchset in our test environment, will report back result.
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