[Skiboot] [PATCH stable] external/gard: Fix displaying 'cleared' gard records

[Stewart Smith]

Cyril Bur <cyril.bur at au1.ibm.com> writes:

> When a garded component is replaced hostboot detects this and updates the
> gard partition.
>
> What hostboot does is set the record_id field to 0xFFFFFFFF but leaves the
> rest of the flash untouched, this has caused issues with the gard tool the
> thinking was that an entire record of all 0xFF bytes would signal not a
> valid record.
>
> This patch add rectifies this issue and `gard list` will no longer show any
> record with an id of 0xFFFFFFFF.
>
> Signed-off-by: Cyril Bur <cyril.bur at au1.ibm.com>
> ---
> Stewart: This is the backported version of patch
> https://lists.ozlabs.org/pipermail/skiboot/2016-January/002639.html

Thanks!

Merged to stable as of c80260e5ef3c780f2b6006fb4e50aaae2089d56f
Merged to master as of 91cebdcd557dfc2dfc8050a34edb11a43facaf74

The master one is of the original patch, stable is this one.

-- 
Stewart Smith
OPAL Architect, IBM.