linux-kernel - Re: [PATCH RESEND v4 2/2] drm/mediatek: Fix iommu fault during crtc enabling

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Date:   Tue, 8 Aug 2023 08:38:23 +0000
From:   Jason-JH Lin (林睿祥) 
        <Jason-JH.Lin@...iatek.com>
To:     "amergnat@...libre.com" <amergnat@...libre.com>,
        "chunkuang.hu@...nel.org" <chunkuang.hu@...nel.org>,
        "angelogioacchino.delregno@...labora.com" 
        <angelogioacchino.delregno@...labora.com>
CC:     "linux-mediatek@...ts.infradead.org" 
        <linux-mediatek@...ts.infradead.org>,
        Singo Chang (張興國) 
        <Singo.Chang@...iatek.com>,
        Johnson Wang (王聖鑫) 
        <Johnson.Wang@...iatek.com>,
        Jason-ch Chen (陳建豪) 
        <Jason-ch.Chen@...iatek.com>,
        Shawn Sung (宋孝謙) 
        <Shawn.Sung@...iatek.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Nancy Lin (林欣螢) <Nancy.Lin@...iatek.com>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        Project_Global_Chrome_Upstream_Group 
        <Project_Global_Chrome_Upstream_Group@...iatek.com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH RESEND v4 2/2] drm/mediatek: Fix iommu fault during crtc
 enabling

Hi Alexandre,

On Mon, 2023-08-07 at 11:45 +0200, Alexandre Mergnat wrote:
>  	 
> External email : Please do not click links or open attachments until
> you have verified the sender or the content.
>  Hi Jason,
> 
> You forgot to put the Reviewed-by got from the V3 in your commit
> message.
> 

Since I changed the original method at the new version, I removed all
reviewed-by tags.
In order to avoid the version you have reviewed is too different.

Regards,
Jason-JH.Lin

> 
> On 07/08/2023 03:51, Jason-JH.Lin wrote:
> > The plane_state of drm_atomic_state is not sync to the
> mtk_plane_state
> > stored in mtk_crtc during crtc enabling.
> > 
> > So we need to update the mtk_plane_state stored in mtk_crtc by the
> > drm_atomic_state carried from mtk_drm_crtc_atomic_enable().
> > 
> > While updating mtk_plane_state, OVL layer should be disabled when
> the fb
> > in plane_state of drm_atomic_state is NULL.
> > 
> > Fixes: 119f5173628a ("drm/mediatek: Add DRM Driver for Mediatek SoC
> MT8173.")
> > Signed-off-by: Jason-JH.Lin <jason-jh.lin@...iatek.com>
> > ---
> > Change in RESEND v4:
> > Remove redundant plane_state assigning.
> > ---
> 
> 
> -- 
> Regards,
> Alexandre