[Skiboot] [PATCH] phb4: Use link if degraded

Stewart Smith stewart at linux.vnet.ibm.com
Fri Sep 15 18:19:28 AEST 2017

Michael Neuling <mikey at neuling.org> writes:
> In the recent change:
>  3f936bae97 phb4: Retrain link if degraded
> We retrain if the link is degraded.  We do 3 retries to get an optimal
> link.
> Unfortunately if the last retry fails, we mark the PHB as bad and
> don't use it. Hence that PHB is lost even though it actually trained
> (just degraded).
> This fixes the problem by printing an error message (as below) but
> still marking the PHB as good.
>   [    7.179320404,3] PHB#0005[0:5]: LINK: Link degraded
>   [    8.387346665,3] PHB#0005[0:5]: LINK: Link degraded
>   [   10.078409137,3] PHB#0005[0:5]: LINK: Link degraded
>   [   11.281477269,3] PHB#0005[0:5]: LINK: Link degraded
>   [   11.283123885,3] PHB#0005[0:5]: LINK: Degraded but no more retries
> Signed-off-by: Michael Neuling <mikey at neuling.org>


Merged to master as of 4a2b8317fd3fee38fdce9b6d6e1639752335204a

Pushing to op-build now, so should be easy for others to pick up

Stewart Smith
OPAL Architect, IBM.

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