From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0AEACD6552C for ; Wed, 17 Dec 2025 10:17:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding:Cc :References:In-Reply-To:Subject:To:From:Date:Message-ID:Reply-To:MIME-Version :Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=mZgmTPAeMOlNUGInXD4jCnDjAKu2QFFNlX+3u+2jIAc=; b=sqI8YsPKeehqXEM/UkO7g8t/xH hJqeWhUaRnbOtAUPPTWu01X/aMRyOT/Ol0/v0Q01JRCnk8l7fX573rNjpvvycffswOEJD1Z2tIWzy +zwq4A4k7QWrTGjdHY8P0Y/v7IWdTOvnA+tJ/x/dcWlngYZytPc7GedCNNvgm33IZ9q3Aq9ULzhpg j9vyZ+r0aqr3dOiGVNCnGRz1Lw7b2aI15wCTsjdllE9MgL0FaHDCVUCI9wYVyxdydnfFr/diRXKHW iLUyUvLWgL/wRTCds63fCZV7SvrrCHolNkQSOE6jNmgR7vwicClQQte3eMdSJNWDOZsE2WggSrowr ZZD+2xPQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vVoaj-00000006aID-24kA; Wed, 17 Dec 2025 10:17:09 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vVoag-00000006aHO-3NV8; Wed, 17 Dec 2025 10:17:07 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 66464423DD; Wed, 17 Dec 2025 10:17:06 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BAFD5C4CEF5; Wed, 17 Dec 2025 10:17:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1765966626; bh=mZgmTPAeMOlNUGInXD4jCnDjAKu2QFFNlX+3u+2jIAc=; h=Date:From:To:Subject:In-Reply-To:References:Cc:From; b=VyZAKLyFoi3kNFjG5dOkan+Qis7IQcXAKUc7okV15sa3Du0PSNJfnus2iX/r1acOQ 26zGZkm7o5M+xp1aBKtVPRBSYi7SgUPYKH5wZQeVv4qy5KEPuvQLyMVPOoeDxPuwPy WTU36fOOpVOxpXa73nbFDyWwksA0xJBLCzX3cC3neAzgWhEyvgGkGfgEiDkNzNnaXj skrcOyBoe+Sh5yLymrrlgsdXfj67lvuljIFJXiZ7y0q1YmFDrA4FV2EvLFSrPeev52 49ufHVFENgYAROMzIktwy4ImrH0phkgwUQRt/qrNh9mWTn2uBAq0Av6X7PcxRghwIQ fsL/NCIkBT4CA== Message-ID: <58a8aea8735f1ec8db23a95da8b7e0a8@kernel.org> Date: Wed, 17 Dec 2025 10:17:03 +0000 From: "Maxime Ripard" To: "Luca Ceresoli" Subject: Re: [PATCH v3 06/22] drm/bridge: add next_bridge pointer to struct drm_bridge In-Reply-To: <20251216-drm-bridge-alloc-getput-drm_of_find_bridge-v3-6-b5165fab8058@bootlin.com> References: <20251216-drm-bridge-alloc-getput-drm_of_find_bridge-v3-6-b5165fab8058@bootlin.com> Cc: dri-devel@lists.freedesktop.org, imx@lists.linux.dev, linux-amlogic@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, "Alexey Brodkin" , "Andrzej Hajda" , "David Airlie" , "Fabio Estevam" , "Hui Pu" , "Jernej Skrabec" , "Jerome Brunet" , "Jonas Karlman" , "Jonathan Corbet" , "Kevin Hilman" , "Laurent Pinchart" , "Liu Ying" , "Maarten Lankhorst" , "Martin Blumenstingl" , "Maxime Ripard" , "Neil Armstrong" , "Pengutronix Kernel Team" , "Phong LE" , "Robert Foss" , "Sascha Hauer" , "Shawn Guo" , "Simona Vetter" , "Thomas Petazzoni" , "Thomas Zimmermann" Content-Transfer-Encoding: quoted-printable X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251217_021706_865083_5BEED36B X-CRM114-Status: UNSURE ( 5.20 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, 16 Dec 2025 18:58:39 +0100, Luca Ceresoli wrote: > Many bridge drivers store a next_bridge pointer in their private data and > use it for attach and sometimes other purposes. This is going to be risky > when bridge hot-unplug is used. >=20 > Considering this example scenario: >=20 > [ ... ] Reviewed-by: Maxime Ripard Thanks! Maxime