linux-kernel - Re: [PATCH] drm/msm/a6xx: restore previous freq on resume

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Message-ID: <5dd33824.1c69fb81.2d94a.4f12@mx.google.com>
Date:   Mon, 18 Nov 2019 16:32:35 -0800
From:   Stephen Boyd <swboyd@...omium.org>
To:     Rob Clark <robdclark@...il.com>, dri-devel@...ts.freedesktop.org
Cc:     Rob Clark <robdclark@...omium.org>,
        Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Jordan Crouse <jcrouse@...eaurora.org>,
        Douglas Anderson <dianders@...omium.org>,
        Mamta Shukla <mamtashukla555@...il.com>,
        linux-arm-msm@...r.kernel.org, freedreno@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/msm/a6xx: restore previous freq on resume

Quoting Rob Clark (2019-11-18 15:40:38)
> diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.h b/drivers/gpu/drm/msm/adreno/a6xx_gmu.h
> index 39a26dd63674..2af91ed7ed0c 100644
> --- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.h
> +++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.h
> @@ -63,6 +63,9 @@ struct a6xx_gmu {
>         struct clk_bulk_data *clocks;
>         struct clk *core_clk;
>  
> +       /* current performance index set externally */
> +       int current_perf_index;
> +

Is there a reason this isn't unsigned? It looks like
__a6xx_gmu_set_freq() takes an int, but maybe it should take a u16 or
something?