Re: [PATCH v4 01/10] drm/tests: hdmi: handle empty modes in find_preferred_mode()

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Subject: Re: [PATCH v4 01/10] drm/tests: hdmi: handle empty modes in find_preferred_mode()
From: "Maxime Ripard" <mripard@xxxxxxxxxx>
Date: Mon, 25 Nov 2024 09:13:59 +0000
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-sunxi@xxxxxxxxxxxxxxx, "Andrzej Hajda" <andrzej.hajda@xxxxxxxxx>, "Chen-Yu Tsai" <wens@xxxxxxxx>, "Dave Stevenson" <dave.stevenson@xxxxxxxxxxxxxxx>, "David Airlie" <airlied@xxxxxxxxx>, "Jernej Skrabec" <jernej.skrabec@xxxxxxxxx>, "Jonas Karlman" <jonas@xxxxxxxxx>, "Laurent Pinchart" <Laurent.pinchart@xxxxxxxxxxxxxxxx>, "Maarten Lankhorst" <maarten.lankhorst@xxxxxxxxxxxxxxx>, "Maxime Ripard" <mripard@xxxxxxxxxx>, Maíra Canal <mcanal@xxxxxxxxxx>, "Neil Armstrong" <neil.armstrong@xxxxxxxxxx>, "Raspberry Pi Kernel Maintenance" <kernel-list@xxxxxxxxxxxxxxx>, "Robert Foss" <rfoss@xxxxxxxxxx>, "Samuel Holland" <samuel@xxxxxxxxxxxx>, "Simona Vetter" <simona@xxxxxxxx>, "Thomas Zimmermann" <tzimmermann@xxxxxxx>
In-reply-to: <20241122-hdmi-mode-valid-v4-1-2fee4a83ab79@linaro.org>
References: <20241122-hdmi-mode-valid-v4-1-2fee4a83ab79@linaro.org>

On Fri, 22 Nov 2024 11:12:57 +0200, Dmitry Baryshkov wrote:
> If the connector->modes list is empty, then list_first_entry() returns a
> bogus entry. Change that to use list_first_entry_or_null().
> 
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>

Reviewed-by: Maxime Ripard <mripard@xxxxxxxxxx>

Thanks!
Maxime

References:
- [PATCH v4 01/10] drm/tests: hdmi: handle empty modes in find_preferred_mode()
  - From: Dmitry Baryshkov

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