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Message-ID: <0c0b84319f96b5d2a32bbae473e5758e@kernel.org>
Date: Wed, 29 Oct 2025 08:55:20 +0000
From: "Maxime Ripard" <mripard@kernel.org>
To: "Luca Ceresoli" <luca.ceresoli@bootlin.com>
Subject: Re: [PATCH v3 7/7] drm/bridge: prevent encoder chain changes in
 pre_enable/post_disable
In-Reply-To: <20251009-drm-bridge-alloc-encoder-chain-mutex-v3-7-c90ed744efec@bootlin.com>
References: <20251009-drm-bridge-alloc-encoder-chain-mutex-v3-7-c90ed744efec@bootlin.com>
Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, "Andrzej
 Hajda" <andrzej.hajda@intel.com>, "David Airlie" <airlied@gmail.com>, "Hui
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 "Jonas Karlman" <jonas@kwiboo.se>,
 "Laurent Pinchart" <Laurent.pinchart@ideasonboard.com>, "Maarten
 Lankhorst" <maarten.lankhorst@linux.intel.com>,
 "Maxime Ripard" <mripard@kernel.org>, "Neil
 Armstrong" <neil.armstrong@linaro.org>, "Robert Foss" <rfoss@kernel.org>,
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On Thu, 9 Oct 2025 13:39:02 +0200, Luca Ceresoli wrote:
> Take the encoder chain mutex while iterating over the encoder chain in
> drm_atomic_bridge_chain_pre_enable() and
> drm_atomic_bridge_chain_post_disable() to ensure the lists won't change
> while being inspected.
> 
> 
> [ ... ]

Reviewed-by: Maxime Ripard <mripard@kernel.org>

Thanks!
Maxime