From patchwork Fri May 9 13:53:48 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luca Ceresoli X-Patchwork-Id: 889449 Received: from relay4-d.mail.gandi.net (relay4-d.mail.gandi.net [217.70.183.196]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3DC08296FD2; Fri, 9 May 2025 13:57:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.196 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746799046; cv=none; b=V9GVIxJWZJqQnEOVkkvvb3XImNMMUYTd2ntfMy6h27kglXBNC4LHLZ/8E82giqmBr56VLOWL+gZZ7uAmMhYLXhLzBwhDCDw9cBUxOr43GwwsvnOL/AU2dxzF3Qq12qwkXilGd0Wqc/HRX2aUxpBnL2diSjHn5n3F9vsLZy73ndM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746799046; c=relaxed/simple; bh=LozClABcXufkShD9dMW2j2p46c8bfoPymagdHW8vpKE=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; 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bh=d90bdozVEDl17jgP/30NkcxJUSIJ4T84xVCf6HbGeUs=; b=oC4jIVadhL3OVUuZQHMzblGENFNnp2JxECtht7zSQrYJ4U/3R6u9zOmCvzfwW9snQQ1lFe a6Zm7dfqnpH0AmpUxEpTLuh7hBe8tTIv7itfJlbzjrW2KAUZIMmELfY9t+ANbn5FsU9xT1 6fJKT68jMunkzO0x5aObyt2WHsMqNn/8TGbWxs1Py0LlTnlqoVzbxJ8iOXpDeTDwoB8742 UL96robWxijxmxcsKbHT0d6GIpgqZ24R+8m2xUlMhf1KNIGGRN2Z8dkn8DKC/Mx/7VF91M wBUVhXjFzpki4cu1UFVgHt6E9voiQDvB7B8+xmPWeJ2dzKssT4PfW1f1ITvsbQ== From: Luca Ceresoli Date: Fri, 09 May 2025 15:53:48 +0200 Subject: [PATCH v3 22/22] drm/todo: add entry to remove devm_drm_put_bridge() Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250509-drm-bridge-convert-to-alloc-api-v3-22-b8bc1f16d7aa@bootlin.com> References: <20250509-drm-bridge-convert-to-alloc-api-v3-0-b8bc1f16d7aa@bootlin.com> In-Reply-To: <20250509-drm-bridge-convert-to-alloc-api-v3-0-b8bc1f16d7aa@bootlin.com> To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Jagan Teki , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Douglas Anderson , Chun-Kuang Hu , Krzysztof Kozlowski Cc: Anusha Srivatsa , Paul Kocialkowski , Dmitry Baryshkov , Hui Pu , Thomas Petazzoni , dri-devel@lists.freedesktop.org, asahi@lists.linux.dev, linux-kernel@vger.kernel.org, chrome-platform@lists.linux.dev, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-renesas-soc@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, linux-stm32@st-md-mailman.stormreply.com, Luca Ceresoli , Jonathan Corbet , linux-doc@vger.kernel.org X-Mailer: b4 0.14.2 X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeefvddrtddtgddvledvjeelucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuifetpfffkfdpucggtfgfnhhsuhgsshgtrhhisggvnecuuegrihhlohhuthemuceftddunecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhfffugggtgffkfhgjvfevofesthejredtredtjeenucfhrhhomhepnfhutggrucevvghrvghsohhlihcuoehluhgtrgdrtggvrhgvshholhhisegsohhothhlihhnrdgtohhmqeenucggtffrrghtthgvrhhnpeeiieeuvdfftefgueduleehueetgffgjeeitedtteetkeeuueeuueekveevvdeuveenucfkphepvdgrtddvmeeijedtmedvtddvtdemvggrtddumegsvgegudemleehvgejmeefgeefmeeludefvgenucevlhhushhtvghrufhiiigvpedvtdenucfrrghrrghmpehinhgvthepvdgrtddvmeeijedtmedvtddvtdemvggrtddumegsvgegudemleehvgejmeefgeefmeeludefvgdphhgvlhhopegludelvddrudeikedrudejkedruddukegnpdhmrghilhhfrhhomheplhhutggrrdgtvghrvghsohhlihessghoohhtlhhinhdrtghomhdpnhgspghrtghpthhtohepgedupdhrtghpthhtohepjhhonhgrsheskhifihgsohhordhsvgdprhgtphhtthhopegrnhgurhiivghjrdhhrghjuggrsehinhhtvghlrdgtohhmpdhrtghpthhtohepihhmgieslhhishhtshdrlhhinhhugidruggvvhdprhgtphhtthhopehlihhnu higqdgrrhhmqdhmshhmsehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtohepthiiihhmmhgvrhhmrghnnhesshhushgvrdguvgdprhgtphhtthhopehkvghrnhgvlhesphgvnhhguhhtrhhonhhigidruggvpdhrtghpthhtoheplhhutggrrdgtvghrvghsohhlihessghoohhtlhhinhdrtghomhdprhgtphhtthhopegtohhrsggvtheslhifnhdrnhgvth X-GND-Sasl: luca.ceresoli@bootlin.com devm_drm_put_bridge() is a temporary workaround waiting for the panel bridge lifetime rework. Add a TODO entry to not forget it must be removed after such rework. Suggested-by: Maxime Ripard Signed-off-by: Luca Ceresoli --- To: Jonathan Corbet Cc: linux-doc@vger.kernel.org This patch was added in v3 --- Documentation/gpu/todo.rst | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst index c57777a24e03d91b1ffe04365f7356f2d938befd..be8637da3fe950ddcb65cdcf626bc4b4e6b0fa26 100644 --- a/Documentation/gpu/todo.rst +++ b/Documentation/gpu/todo.rst @@ -515,6 +515,21 @@ Contact: Douglas Anderson Level: Starter +Remove devm_drm_put_bridge() +---------------------------- + +Due to how the panel bridge handles the drm_bridge object lifetime, special +care must be taken to dispose of the drm_bridge object when the +panel_bridge is removed. This is currently managed using +devm_drm_put_bridge(), but that is an unsafe, temporary workaround. To fix +that, the DRM panel lifetime needs to be reworked. After the rework is +done, remove devm_drm_put_bridge() and the TODO in +drm_panel_bridge_remove(). + +Contact: Maxime Ripard , + Luca Ceresoli + +Level: Intermediate Core refactorings =================