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References: <20200326182742.487026-1-enric.balletbo@collabora.com>
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From:   Chun-Kuang Hu <chunkuang.hu@kernel.org>
Date:   Fri, 27 Mar 2020 22:22:18 +0800
Message-ID: <CAAOTY_9vCtr6Y3Geg3wJ7FjTdo6iPc+bdwtJKDZahJAY3Tih8Q@mail.gmail.com>
Subject: Re: [PATCH] soc: mediatek: mtk-mmsys: Export ddp_dis/connect symbols
To:     Enric Balletbo i Serra <enric.balletbo@collabora.com>
Cc:     linux-kernel@vger.kernel.org,
        Nicolas Boichat <drinkcat@chromium.org>,
        Anders Roxell <anders.roxell@linaro.org>,
        linux-mediatek@lists.infradead.org, hsinyi@chromium.org,
        Matthias Brugger <matthias.bgg@gmail.com>,
        Collabora Kernel ML <kernel@collabora.com>,
        linux-arm-kernel@lists.infradead.org
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Hi, Enric:

Enric Balletbo i Serra <enric.balletbo@collabora.com> =E6=96=BC 2020=E5=B9=
=B43=E6=9C=8827=E6=97=A5 =E9=80=B1=E4=BA=94 =E4=B8=8A=E5=8D=882:28=E5=AF=AB=
=E9=81=93=EF=BC=9A
>
> When building on arm64 with allmodconfig or CONFIG_DRM_MEDIATEK=3Dm we se=
e
> the following error.
>
>   ERROR: modpost: "mtk_mmsys_ddp_disconnect"
>   [drivers/gpu/drm/mediatek/mediatek-drm.ko] undefined!
>   ERROR: modpost: "mtk_mmsys_ddp_connect"
>   [drivers/gpu/drm/mediatek/mediatek-drm.ko] undefined!
>
> Export mtk_mmsys_ddp_connect and mtk_mmsys_ddp_disconnect symbols to be
> able to be used for other modules.
>

Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>


> Fixes: 396c3fccaf03 ("soc / drm: mediatek: Move routing control to mmsys =
device")
> Reported-by: Anders Roxell <anders.roxell@linaro.org>
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
> ---
>
>  drivers/soc/mediatek/mtk-mmsys.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/drivers/soc/mediatek/mtk-mmsys.c b/drivers/soc/mediatek/mtk-=
mmsys.c
> index 32a92ec447c5..05e322c9c301 100644
> --- a/drivers/soc/mediatek/mtk-mmsys.c
> +++ b/drivers/soc/mediatek/mtk-mmsys.c
> @@ -259,6 +259,7 @@ void mtk_mmsys_ddp_connect(struct device *dev,
>                 writel_relaxed(reg, config_regs + addr);
>         }
>  }
> +EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_connect);
>
>  void mtk_mmsys_ddp_disconnect(struct device *dev,
>                               enum mtk_ddp_comp_id cur,
> @@ -279,6 +280,7 @@ void mtk_mmsys_ddp_disconnect(struct device *dev,
>                 writel_relaxed(reg, config_regs + addr);
>         }
>  }
> +EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_disconnect);
>
>  static int mtk_mmsys_probe(struct platform_device *pdev)
>  {
> --
> 2.25.1
>
>
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