linux-kernel - Re: [PATCH] drm/mediatek: mtk_mt8173_hdmi

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Date:   Tue, 19 May 2020 23:12:46 +0800
From:   Chun-Kuang Hu <chunkuang.hu@...nel.org>
To:     Enric Balletbo i Serra <enric.balletbo@...labora.com>
Cc:     linux-kernel <linux-kernel@...r.kernel.org>,
        Collabora Kernel ML <kernel@...labora.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Nicolas Boichat <drinkcat@...omium.org>,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        DRI Development <dri-devel@...ts.freedesktop.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>
Subject: Re: [PATCH] drm/mediatek: mtk_mt8173_hdmi_phy: Remove unnused const variables

Hi, Enric:

Enric Balletbo i Serra <enric.balletbo@...labora.com> 於 2020年5月19日 週二 下午5:40寫道：
>
> There are some `static const u8` variables that are not used, this
> triggers a warning building with `make W=1`, it is safe to remove them,
> so do it and make the compiler more happy.
>

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

> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
> ---
>
>  .../gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c    | 48 -------------------
>  1 file changed, 48 deletions(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c b/drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c
> index 1c3575372230..827b93786fac 100644
> --- a/drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c
> +++ b/drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c
> @@ -107,54 +107,6 @@
>  #define RGS_HDMITX_5T1_EDG             (0xf << 4)
>  #define RGS_HDMITX_PLUG_TST            BIT(0)
>
> -static const u8 PREDIV[3][4] = {
> -       {0x0, 0x0, 0x0, 0x0},   /* 27Mhz */
> -       {0x1, 0x1, 0x1, 0x1},   /* 74Mhz */
> -       {0x1, 0x1, 0x1, 0x1}    /* 148Mhz */
> -};
> -
> -static const u8 TXDIV[3][4] = {
> -       {0x3, 0x3, 0x3, 0x2},   /* 27Mhz */
> -       {0x2, 0x1, 0x1, 0x1},   /* 74Mhz */
> -       {0x1, 0x0, 0x0, 0x0}    /* 148Mhz */
> -};
> -
> -static const u8 FBKSEL[3][4] = {
> -       {0x1, 0x1, 0x1, 0x1},   /* 27Mhz */
> -       {0x1, 0x0, 0x1, 0x1},   /* 74Mhz */
> -       {0x1, 0x0, 0x1, 0x1}    /* 148Mhz */
> -};
> -
> -static const u8 FBKDIV[3][4] = {
> -       {19, 24, 29, 19},       /* 27Mhz */
> -       {19, 24, 14, 19},       /* 74Mhz */
> -       {19, 24, 14, 19}        /* 148Mhz */
> -};
> -
> -static const u8 DIVEN[3][4] = {
> -       {0x2, 0x1, 0x1, 0x2},   /* 27Mhz */
> -       {0x2, 0x2, 0x2, 0x2},   /* 74Mhz */
> -       {0x2, 0x2, 0x2, 0x2}    /* 148Mhz */
> -};
> -
> -static const u8 HTPLLBP[3][4] = {
> -       {0xc, 0xc, 0x8, 0xc},   /* 27Mhz */
> -       {0xc, 0xf, 0xf, 0xc},   /* 74Mhz */
> -       {0xc, 0xf, 0xf, 0xc}    /* 148Mhz */
> -};
> -
> -static const u8 HTPLLBC[3][4] = {
> -       {0x2, 0x3, 0x3, 0x2},   /* 27Mhz */
> -       {0x2, 0x3, 0x3, 0x2},   /* 74Mhz */
> -       {0x2, 0x3, 0x3, 0x2}    /* 148Mhz */
> -};
> -
> -static const u8 HTPLLBR[3][4] = {
> -       {0x1, 0x1, 0x0, 0x1},   /* 27Mhz */
> -       {0x1, 0x2, 0x2, 0x1},   /* 74Mhz */
> -       {0x1, 0x2, 0x2, 0x1}    /* 148Mhz */
> -};
> -
>  static int mtk_hdmi_pll_prepare(struct clk_hw *hw)
>  {
>         struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
> --
> 2.26.2
>