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

[Russell Currey]

On Fri, 2017-09-15 at 10:27 +1000, Michael Neuling wrote:
> 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>

Acked-by: Russell Currey <ruscur at russell.cc>