linux-kernel - Re: [PATCH v4 02/10] drm/vc4: hdmi: implement clear

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Message-ID: <jiq5ublhbfzuv3qsz3n6bve32wmto5hxc6mxppb2i2wagykafx@d235legi4r5o>
Date: Mon, 26 Jan 2026 21:00:45 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Marek Szyprowski <m.szyprowski@...sung.com>
Cc: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        Maíra Canal <mcanal@...lia.com>,
        Raspberry Pi Kernel Maintenance <kernel-list@...pberrypi.com>,
        Chen-Yu Tsai <wens@...nel.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Samuel Holland <samuel@...lland.org>,
        Andrzej Hajda <andrzej.hajda@...el.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Robert Foss <rfoss@...nel.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>, Liu Ying <victor.liu@....com>,
        Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
        Rob Clark <robin.clark@....qualcomm.com>,
        Dmitry Baryshkov <lumag@...nel.org>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        Jessica Zhang <jesszhan0024@...il.com>, Sean Paul <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        Sandy Huang <hjc@...k-chips.com>,
        Heiko Stübner <heiko@...ech.de>,
        Andy Yan <andy.yan@...k-chips.com>, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-sunxi@...ts.linux.dev, linux-mediatek@...ts.infradead.org,
        linux-arm-msm@...r.kernel.org, freedreno@...ts.freedesktop.org,
        linux-rockchip@...ts.infradead.org
Subject: Re: [PATCH v4 02/10] drm/vc4: hdmi: implement clear_infoframe

On Mon, Jan 26, 2026 at 06:44:52PM +0100, Marek Szyprowski wrote:
> On 26.01.2026 18:42, Marek Szyprowski wrote:
> > On 07.01.2026 19:14, Dmitry Baryshkov wrote:
> >> Implement the clear_infoframe callback, disabling corresponding
> >> InfoFrame type.
> >>
> >> Acked-by: Maxime Ripard <mripard@...nel.org>
> >> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
> >
> > This patch landed recently in linux-next as commit 3a4ceb89a972 
> > ("drm/vc4: hdmi: implement clear_infoframe"). In my tests I found that 
> > it causes the following regression on Qualcomm RB5 board:
> >
> Please ignore my report, it looks that automated bisecting got a bit 
> confused.

See https://lore.kernel.org/dri-devel/9ebc0582b0f7990d7df992a07ec8ef7f@kernel.org/T/#t

I'm going to push it to drm-misc-next-fixes.

> 
> Best regards
> -- 
> Marek Szyprowski, PhD
> Samsung R&D Institute Poland
> 

-- 
With best wishes
Dmitry