On Wed, Jan 30, 2019 at 2:27 AM Oliver O'Halloran <[email protected]> wrote:
>
> commit 62bbfce3cb62 ("libndctl, intel: Add infrastructure for
> firmware_status translation") has the unfortunate side effect of making
> all NDCTL commands fail with -ENOMSG unless an xlat_firmware_status
> function is defined for the DIMM family. This means that none of the
> DIMM label manipulation commands work anymore, unless you happen to be
> using an Intel DIMM.
>
> Cc: Vishal Verma <[email protected]>
> Fixes: 62bbfce3cb62 ("libndctl, intel: Add infrastructure for firmware_status 
> translation")
> Signed-off-by: Oliver O'Halloran <[email protected]>
> ---
>  ndctl/lib/libndctl.c | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/ndctl/lib/libndctl.c b/ndctl/lib/libndctl.c
> index 06f835d76117..80d107394a74 100644
> --- a/ndctl/lib/libndctl.c
> +++ b/ndctl/lib/libndctl.c
> @@ -2846,6 +2846,9 @@ NDCTL_EXPORT int ndctl_cmd_submit_xlat(struct ndctl_cmd 
> *cmd)
>          * useful), then the xlat function is available separately as well.
>          */
>         xlat_rc = ndctl_cmd_xlat_firmware_status(cmd);
> +       if (xlat_rc == -ENOMSG)
> +               return rc;
> +

Ah, good point, however I think we should do this instead:

diff --git a/ndctl/lib/libndctl.c b/ndctl/lib/libndctl.c
index 830b791339d2..2fa89162e05e 100644
--- a/ndctl/lib/libndctl.c
+++ b/ndctl/lib/libndctl.c
@@ -2710,7 +2710,7 @@ NDCTL_EXPORT int
ndctl_cmd_xlat_firmware_status(struct ndctl_cmd *cmd)
        struct ndctl_dimm_ops *ops = dimm ? dimm->ops : NULL;

        if (!dimm || !ops || !ops->xlat_firmware_status)
-               return -ENOMSG;
+               return 0;
        return ops->xlat_firmware_status(cmd);
 }


A failure to translate just means proceed with the information that we
*do* have, not a failure.
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