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In-Reply-To: <1594136714-11650-10-git-send-email-dennis-yc.hsieh@mediatek.com>
From:   Chun-Kuang Hu <chunkuang.hu@kernel.org>
Date:   Wed, 8 Jul 2020 07:01:17 +0800
Message-ID: <CAAOTY_-BKW9jbGD5-Un=xagRWizOXaBrvvfdQV7TyzhYWuS8Ag@mail.gmail.com>
Subject: Re: [PATCH v3 9/9] drm/mediatek: reduce clear event
To:     Dennis YC Hsieh <dennis-yc.hsieh@mediatek.com>
Cc:     Matthias Brugger <matthias.bgg@gmail.com>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>, CK Hu <ck.hu@mediatek.com>,
        Bibby Hsieh <bibby.hsieh@mediatek.com>,
        Houlong Wei <houlong.wei@mediatek.com>,
        wsd_upstream <wsd_upstream@mediatek.com>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        DRI Development <dri-devel@lists.freedesktop.org>,
        HS Liao <hs.liao@mediatek.com>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@lists.infradead.org>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>
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Hi, Dennis:

Dennis YC Hsieh <dennis-yc.hsieh@mediatek.com> =E6=96=BC 2020=E5=B9=B47=E6=
=9C=887=E6=97=A5 =E9=80=B1=E4=BA=8C =E4=B8=8B=E5=8D=8811:47=E5=AF=AB=E9=81=
=93=EF=BC=9A
>
> No need to clear event again since event always clear before wait.
> This fix depend on patch:
>   "soc: mediatek: cmdq: add clear option in cmdq_pkt_wfe api"

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

>
> Fixes: 2f965be7f9008 ("drm/mediatek: apply CMDQ control flow")
> Signed-off-by: Dennis YC Hsieh <dennis-yc.hsieh@mediatek.com>
> ---
>  drivers/gpu/drm/mediatek/mtk_drm_crtc.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/me=
diatek/mtk_drm_crtc.c
> index c84e7a14d4a8..ba6cf956b239 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> @@ -490,7 +490,7 @@ static void mtk_drm_crtc_hw_config(struct mtk_drm_crt=
c *mtk_crtc)
>                 mbox_flush(mtk_crtc->cmdq_client->chan, 2000);
>                 cmdq_handle =3D cmdq_pkt_create(mtk_crtc->cmdq_client, PA=
GE_SIZE);
>                 cmdq_pkt_clear_event(cmdq_handle, mtk_crtc->cmdq_event);
> -               cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event, true);
> +               cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event, false);
>                 mtk_crtc_ddp_config(crtc, cmdq_handle);
>                 cmdq_pkt_finalize(cmdq_handle);
>                 cmdq_pkt_flush_async(cmdq_handle, ddp_cmdq_cb, cmdq_handl=
e);
> --
> 1.7.9.5
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