Re: [PATCH] drm/amd/powerplay: declare driver if version mismatch as "warning" explicitly

[Alex Deucher <alexdeucher@xxxxxxxxx>]

On Thu, Jun 18, 2020 at 12:10 AM Quan, Evan <Evan.Quan@xxxxxxx> wrote:
>
> [AMD Official Use Only - Internal Distribution Only]
>
> Hi Alex,
>
> This was raised by Pramendra. He got plenty of questions from customer about this.
> The customer saw these mismatch messages and did not know whether it's an indication of some critical error.
> The mismatch messages were update to be prefixed with "warning". So that it get customer reminded but not scared.
> Any better idea?

If the idea is not to raise concerns, then why change from dev_info to
dev_warn?  I warning is generally seen as more critical than info.
I'd suggest making them both dev_info and instead of saying "warning:
SMU driver if version not matched", maybe say something like "SMU
driver if version not matched, consider updating your firmware".

Alex

>
> BR,
> Evan
> -----Original Message-----
> From: Alex Deucher <alexdeucher@xxxxxxxxx>
> Sent: Thursday, June 18, 2020 5:15 AM
> To: Quan, Evan <Evan.Quan@xxxxxxx>
> Cc: amd-gfx list <amd-gfx@xxxxxxxxxxxxxxxxxxxxx>; Deucher, Alexander <Alexander.Deucher@xxxxxxx>; Kumar, Pramendra <Pramendra.Kumar@xxxxxxx>
> Subject: Re: [PATCH] drm/amd/powerplay: declare driver if version mismatch as "warning" explicitly
>
> On Wed, Jun 17, 2020 at 5:45 AM Evan Quan <evan.quan@xxxxxxx> wrote:
> >
> > So that user knows it's just a warning and can be safely ignored.
>
> I'm not sure I follow this logic.  I think a warning would cause more concern than just printing it as info.  Why would you ignore a warning?
>
> Alex
>
> >
> > Change-Id: Ic518ec3eb68c6bd6682e6131e32cfe90843341ff
> > Signed-off-by: Evan Quan <evan.quan@xxxxxxx>
> > ---
> >  drivers/gpu/drm/amd/powerplay/smu_v11_0.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
> > b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
> > index 2bcb8d16f1b7..22eabc10ea8e 100644
> > --- a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
> > +++ b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
> > @@ -318,11 +318,11 @@ int smu_v11_0_check_fw_version(struct smu_context *smu)
> >          * of halt driver loading.
> >          */
> >         if (if_version != smu->smc_driver_if_version) {
> > -               dev_info(smu->adev->dev, "smu driver if version = 0x%08x, smu fw if version = 0x%08x, "
> > +               dev_warn(smu->adev->dev, "warning: smu driver if version = 0x%08x, smu fw if version = 0x%08x, "
> >                         "smu fw version = 0x%08x (%d.%d.%d)\n",
> >                         smu->smc_driver_if_version, if_version,
> >                         smu_version, smu_major, smu_minor, smu_debug);
> > -               dev_warn(smu->adev->dev, "SMU driver if version not matched\n");
> > +               dev_warn(smu->adev->dev, "warning: SMU driver if
> > + version not matched\n");
> >         }
> >
> >         return ret;
> > --
> > 2.27.0
> >
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