From nobody Tue Dec 2 02:30:34 2025 Received: from smtpout-03.galae.net (smtpout-03.galae.net [185.246.85.4]) (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 CB17F358D15; Wed, 19 Nov 2025 13:06:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.246.85.4 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763557590; cv=none; b=hnVdyjXqmS3O2ZKW3IxnMV1UzyxLuDPBBdu1sDiHMwCHeflK6f+Xx0AESfibj1HpXTz3Tc5cXQHaI+da/3Nmy3eypBe+fZIUAYwqtXR2Nv6X93ni2Ii3yrf0jvZ2to9JIZNl25rKMtG5MAIOKh5Xc0Z4EQqs0pFuwiGd3ITuj6I= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763557590; c=relaxed/simple; bh=qBFnRHiu6GoS0sjFL5oa3JrBTXUUbf89surMgDpq2DA=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=Ky8pghdX1RCcZTf6bBiHltIk5/EphnDuMS66FrC5cH2HYHDK/YaP2HDPay5BPxzyu5ui/+WgY0JxMJJ+Yr/jBQfFCagKJNz4/2MTmm+wroHeg7Z8Rq6TnnzRpKL1TkiLxn+PzxLE10zZvyA7QVmezxgB/0UHrAWtaSz3upm4k6w= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=bFcA+TR6; arc=none smtp.client-ip=185.246.85.4 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="bFcA+TR6" Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-03.galae.net (Postfix) with ESMTPS id 7914D4E4179C; Wed, 19 Nov 2025 13:06:27 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 4885260720; Wed, 19 Nov 2025 13:06:27 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 9625410371A4D; Wed, 19 Nov 2025 14:06:16 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1763557584; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=U5pSp1vPWfg6VVqrqrSp3mxOttgley4fq02+zPb9SPE=; b=bFcA+TR6jEG5qm9LQ9GiqfHt1lqV/lld+li8AOuv98I2mxB/Moe4o/Qc1HDGOBV4ufX4MZ NKb5vGxeI5/5fCmp4TSXS9/h2xnyzlwlxO3mm3Qr4/0DC3Ysk3r/siQxkCIL7CVzCgDsg8 6y5bRL++49tf86mgGirblyly0TJLFRC5f/Ht8qoDIEXFqvSX/+fOwFJ7nvTebCXdOq2skV ovYfRDxHpTkSa5h4hLUBzKohE7UgHX/0TnirrywxaN3V+A8R8c/s34HbyZ8PovJIfzWZZa ahSxa4pU6pIwQG7dSheA4Bc+vyy6Z4uGaSY5dk2xEI2DA3F8pxsGqulwwk86Ug== From: Luca Ceresoli Date: Wed, 19 Nov 2025 14:05:34 +0100 Subject: [PATCH 03/26] drm/todo: add entry about converting to drm_of_find_bridge() Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20251119-drm-bridge-alloc-getput-drm_of_find_bridge-v1-3-0db98a7fe474@bootlin.com> References: <20251119-drm-bridge-alloc-getput-drm_of_find_bridge-v1-0-0db98a7fe474@bootlin.com> In-Reply-To: <20251119-drm-bridge-alloc-getput-drm_of_find_bridge-v1-0-0db98a7fe474@bootlin.com> To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Jonathan Corbet , Alexey Brodkin , Phong LE , Liu Ying , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Adrien Grassein , Laurent Pinchart , Tomi Valkeinen , Kieran Bingham , Geert Uytterhoeven , Magnus Damm , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Chun-Kuang Hu , Philipp Zabel , Matthias Brugger , AngeloGioacchino Del Regno , Anitha Chrisanthus , Edmund Dea , Inki Dae , Seung-Woo Kim , Kyungmin Park , Krzysztof Kozlowski , Alim Akhtar Cc: Hui Pu , Thomas Petazzoni , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-renesas-soc@vger.kernel.org, linux-amlogic@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-samsung-soc@vger.kernel.org, Luca Ceresoli X-Mailer: b4 0.14.3 X-Last-TLS-Session-Version: TLSv1.3 of_drm_find_bridge() is deprecated, but converting some users is very complex and should be reasonably doable only after the DRM panel bridge lifetime rework. Add a TODO to track this. Suggested-by: Maxime Ripard Link: https://lore.kernel.org/dri-devel/20250319-stylish-lime-mongoose-0a18= ad@houat/ Signed-off-by: Luca Ceresoli --- Documentation/gpu/todo.rst | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst index 9013ced318cb..1a4a11dee036 100644 --- a/Documentation/gpu/todo.rst +++ b/Documentation/gpu/todo.rst @@ -506,6 +506,22 @@ Contact: Maxime Ripard , =20 Level: Intermediate =20 +Convert users of of_drm_find_bridge() to drm_of_find_bridge() +------------------------------------------------------------- + +Taking a struct drm_bridge pointer requires getting a reference and putting +it after disposing of the pointer. Most functions returning a struct +drm_bridge pointer already call drm_bridge_get() to increment the refcount +and their users have been updated to call drm_bridge_put() when +appropriate. of_drm_find_bridge() does not get a reference and it has been +deprecated in favor of drm_of_find_bridge() which does, but some users +still need to be converted. + +Contact: Maxime Ripard , + Luca Ceresoli + +Level: Intermediate + Core refactorings =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =20 --=20 2.51.1