linux-kernel - Re: [PATCH 1/1] drm/mediatek: Add check framebuffer width and height size before config ovl

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Message-ID: <67bc01ca-10a4-44c2-a588-1516df832108@collabora.com>
Date: Tue, 18 Nov 2025 09:44:45 +0100
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: Xiandong Wang <xiandong.wang@...iatek.com>,
 Jassi Brar <jassisinghbrar@...il.com>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Matthias Brugger <matthias.bgg@...il.com>,
 Yongqiang Niu <yongqiang.niu@...iatek.com>
Cc: linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org,
 sirius.wang@...iatek.com, vince-wl.liu@...iatek.com, jh.hsu@...iatek.com,
 Project_Global_Chrome_Upstream_Group@...iatek.com
Subject: Re: [PATCH 1/1] drm/mediatek: Add check framebuffer width and height
 size before config ovl

Il 18/11/25 03:22, Xiandong Wang ha scritto:
> During the execution of the IGT test kms_cursor_edge_walk,
> the screen experiences glitches and the hardware hangs.
> It was discovered that the framebuffer dimensions (width and height)
> provided by IGT to the display driver are zero, leading to
> abnormal parameters that cause the hardware to freeze.
> Therefore, it is necessary to verify the buffer dimensions
> before successfully passing the IGT test.
> 
> Signed-off-by: Xiandong Wang <xiandong.wang@...iatek.com>

Needs a Fixes tag.

After which:

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>

Cheers,
Angelo