linux-kernel - Re: [PATCH] drm/msm: fix new Konfig dependency warning

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Date:   Sun, 19 Feb 2023 15:09:36 -0800
From:   Rob Clark <robdclark@...il.com>
To:     Randy Dunlap <rdunlap@...radead.org>
Cc:     linux-kernel@...r.kernel.org,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>, linux-arm-msm@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org
Subject: Re: [PATCH] drm/msm: fix new Konfig dependency warning

On Sun, Feb 19, 2023 at 10:54 AM Randy Dunlap <rdunlap@...radead.org> wrote:
>
> DEVFREQ_GOV_SIMPLE_ONDEMAND depends on PM_DEVFREQ, so in order to
> select the former safely, this symbol should also depend on
> PM_DEVFREQ to avoid a Kconfig dependency warning.
>
> WARNING: unmet direct dependencies detected for DEVFREQ_GOV_SIMPLE_ONDEMAND
>   Depends on [n]: PM_DEVFREQ [=n]
>   Selected by [m]:
>   - DRM_MSM [=m] && HAS_IOMEM [=y] && DRM [=m] && (ARCH_QCOM || SOC_IMX5 || COMPILE_TEST [=y]) && COMMON_CLK [=y] && IOMMU_SUPPORT [=y] && (QCOM_OCMEM [=n] || QCOM_OCMEM [=n]=n) && (QCOM_LLCC [=y] || QCOM_LLCC [=y]=n) && (QCOM_COMMAND_DB [=n] || QCOM_COMMAND_DB [=n]=n)
>

Actually, I fixed devfreq[1] so that we no longer depend on
DEVFREQ_GOV_SIMPLE_ONDEMAND .. probably we should just drop
DEVFREQ_GOV_SIMPLE_ONDEMAND from the kconfig instead, sorry I forgot
to do that already

BR,
-R

[1] https://patchwork.freedesktop.org/series/113232/

> Fixes: 6563f60f14cb ("drm/msm/gpu: Add devfreq tuning debugfs")
> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
> Cc: Rob Clark <robdclark@...il.com>
> Cc: Abhinav Kumar <quic_abhinavk@...cinc.com>
> Cc: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> Cc: Sean Paul <sean@...rly.run>
> Cc: David Airlie <airlied@...il.com>
> Cc: Daniel Vetter <daniel@...ll.ch>
> Cc: linux-arm-msm@...r.kernel.org
> Cc: dri-devel@...ts.freedesktop.org
> Cc: freedreno@...ts.freedesktop.org
> ---
>  drivers/gpu/drm/msm/Kconfig |    1 +
>  1 file changed, 1 insertion(+)
>
> diff -- a/drivers/gpu/drm/msm/Kconfig b/drivers/gpu/drm/msm/Kconfig
> --- a/drivers/gpu/drm/msm/Kconfig
> +++ b/drivers/gpu/drm/msm/Kconfig
> @@ -9,6 +9,7 @@ config DRM_MSM
>         depends on QCOM_OCMEM || QCOM_OCMEM=n
>         depends on QCOM_LLCC || QCOM_LLCC=n
>         depends on QCOM_COMMAND_DB || QCOM_COMMAND_DB=n
> +       depends on PM_DEVFREQ
>         select IOMMU_IO_PGTABLE
>         select QCOM_MDT_LOADER if ARCH_QCOM
>         select REGULATOR