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([2001:861:3385:e20:2acd:89a8:83d9:4be5]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-427f00b9f71sm4781988f8f.37.2025.10.18.05.46.50 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 18 Oct 2025 05:46:51 -0700 (PDT) Message-ID: Date: Sat, 18 Oct 2025 14:46:50 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 4/4] drm/bridge: add warning for bridges attached without being added To: Luca Ceresoli , Alain Volmat , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec Cc: Hui Pu , Thomas Petazzoni , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org References: <20251003-b4-drm-bridge-alloc-add-before-attach-v1-0-92fb40d27704@bootlin.com> <20251003-b4-drm-bridge-alloc-add-before-attach-v1-4-92fb40d27704@bootlin.com> Content-Language: en-US, fr From: =?UTF-8?Q?Rapha=C3=ABl_Gallais-Pou?= In-Reply-To: <20251003-b4-drm-bridge-alloc-add-before-attach-v1-4-92fb40d27704@bootlin.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Le 03/10/2025 à 10:59, Luca Ceresoli a écrit : > DRM bridges must be added before they are attached. Add a warning to catch > violations. > > The warning is based on the bridge not being part of any list, so it will > trigger if the bridge is being attached without ever having been added. > > It won't catch cases of bridges attached after having been added and then > removed, because in that case the bridge will be in > bridge_lingering_list. However such a case is both more demanding to detect > and less likely to happen, so it can be left unchecked, at least for now. > > Link: https://lore.kernel.org/all/20250709-sophisticated-loon-of-rain-6ccdd8@houat/ > Signed-off-by: Luca Ceresoli > --- Reviewed-by: Raphael Gallais-Pou Best regards, Raphaël>