linux-kernel - Re: [PATCH AUTOSEL 5.5 530/542] drm/amdgpu/smu10: fix smu10_get_clock_by_type_with_voltage

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Date:   Fri, 14 Feb 2020 11:31:31 -0500
From:   Alex Deucher <alexdeucher@...il.com>
To:     Sasha Levin <sashal@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        "for 3.8" <stable@...r.kernel.org>,
        Alex Deucher <alexander.deucher@....com>,
        Evan Quan <evan.quan@....com>,
        Maling list - DRI developers 
        <dri-devel@...ts.freedesktop.org>,
        amd-gfx list <amd-gfx@...ts.freedesktop.org>
Subject: Re: [PATCH AUTOSEL 5.5 530/542] drm/amdgpu/smu10: fix smu10_get_clock_by_type_with_voltage

On Fri, Feb 14, 2020 at 11:00 AM Sasha Levin <sashal@...nel.org> wrote:
>
> From: Alex Deucher <alexander.deucher@....com>
>
> [ Upstream commit 1064ad4aeef94f51ca230ac639a9e996fb7867a0 ]
>
> Cull out 0 clocks to avoid a warning in DC.
>
> Bug: https://gitlab.freedesktop.org/drm/amd/issues/963

All of the upstream commits that reference this bug need to be applied
or this patch set will be broken.  Please either apply them all or
drop them.

Alex

> Reviewed-by: Evan Quan <evan.quan@....com>
> Signed-off-by: Alex Deucher <alexander.deucher@....com>
> Signed-off-by: Sasha Levin <sashal@...nel.org>
> ---
>  drivers/gpu/drm/amd/powerplay/hwmgr/smu10_hwmgr.c | 8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/smu10_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/smu10_hwmgr.c
> index 627a42e8fd318..fed3fc4bb57a9 100644
> --- a/drivers/gpu/drm/amd/powerplay/hwmgr/smu10_hwmgr.c
> +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/smu10_hwmgr.c
> @@ -1080,9 +1080,11 @@ static int smu10_get_clock_by_type_with_voltage(struct pp_hwmgr *hwmgr,
>
>         clocks->num_levels = 0;
>         for (i = 0; i < pclk_vol_table->count; i++) {
> -               clocks->data[i].clocks_in_khz = pclk_vol_table->entries[i].clk  * 10;
> -               clocks->data[i].voltage_in_mv = pclk_vol_table->entries[i].vol;
> -               clocks->num_levels++;
> +               if (pclk_vol_table->entries[i].clk) {
> +                       clocks->data[clocks->num_levels].clocks_in_khz = pclk_vol_table->entries[i].clk  * 10;
> +                       clocks->data[clocks->num_levels].voltage_in_mv = pclk_vol_table->entries[i].vol;
> +                       clocks->num_levels++;
> +               }
>         }
>
>         return 0;
> --
> 2.20.1
>
> _______________________________________________
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> amd-gfx@...ts.freedesktop.org
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