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 9D5B5CD4F52 for ; Mon, 18 May 2026 11:55:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=IkXnRYo7uabl3gayobFkGLz8q5yDBxQxX4ELqegN098=; b=aW7jE3CykIt48z ANO+UisGtGbb/SmEtIheSVocwK6IO9gzJJBUKb2W+eRAOgIuhvwyVejUVSw2eGXyzSSjaYC3DK3I4 3QFWjWekrkiJtISbqW+eGvvm4Z60+xagOzYESqfGynz8JJEPfuvoFnn9OQzuszmTvHy+PHuUd/zde yD6zsmNqDSDIQBVMaqr9vnnTTq/D+6MeF2DNs4eYcqq2taPuDqN27jMurLnc8otYd/djWLQahCq85 VjnLps3aq31w4mQIVJIC7BXBA6IQp6+B3rzowVW7uBWHewfLvdFoA50rIYPsuMcpC9PS1i2cKWmG4 ITgiYiwEAEBM4QakWQow==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wOwZR-0000000FW4Y-1bDg; Mon, 18 May 2026 11:55:41 +0000 Received: from mgamail.intel.com ([192.198.163.10]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wOwZP-0000000FW3B-1toj for linux-i3c@lists.infradead.org; Mon, 18 May 2026 11:55:40 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1779105339; x=1810641339; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=N1BVI4vCHN0idk5Tct9ApRQPRZ+noGVXctLqf2EgNI4=; b=SXR06YcQDAOhGgkMYTNrMTWZRUK+i/CuP7ImyowIVrOHk0p0oLvBo1dH 6VUnrDVkeWKUmFTvja7M3LV4MpzRcOrCgnpzwdl1kc54VIX9rL/v7je5x OJFRTvX8zElMg6bUk9ea0W50MwKp3K5T+dq3YrSGWwpmF5MPLnWdggQqZ PgaMuCYuaFaV8aZ1GeLLCTYUEGx1dDKp7y5y+3yarnYSJl88C/zT+t0ng 9AIjcdQJ3mecga1OVRuYyKJrZJGh6TN7Biq8mjEmLIoUyCqRnoM711OO7 LpuiNZVP6IXi6y5T2q4yWkHbNKCSBLa3U9yHbiJvuXqMU/pN8zwIfjipR g==; X-CSE-ConnectionGUID: FSmPNY9uQeq8qzBkTfBMsg== X-CSE-MsgGUID: tvxhvhcmTqqduzcIUrFj7A== X-IronPort-AV: E=McAfee;i="6800,10657,11789"; a="91347031" X-IronPort-AV: E=Sophos;i="6.23,241,1770624000"; d="scan'208";a="91347031" Received: from orviesa007.jf.intel.com ([10.64.159.147]) by fmvoesa104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 May 2026 04:55:37 -0700 X-CSE-ConnectionGUID: oEsSGbmPTRqlGFNEOegzJA== X-CSE-MsgGUID: h8hl3YPURGOEjd1HjokW4w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,241,1770624000"; d="scan'208";a="239663391" Received: from egrumbac-mobl6.ger.corp.intel.com (HELO ahunter6-desk) ([10.245.245.220]) by orviesa007-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 May 2026 04:55:34 -0700 From: Adrian Hunter To: alexandre.belloni@bootlin.com Cc: Frank.Li@nxp.com, david.nystrom@est.tech, linux-i3c@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH V2 0/8] i3c: Hot-Join improvements and MIPI HCI Hot-Join support Date: Mon, 18 May 2026 14:55:11 +0300 Message-ID: <20260518115520.98335-1-adrian.hunter@intel.com> X-Mailer: git-send-email 2.51.0 MIME-Version: 1.0 Organization: Intel Finland Oy, Registered Address: c/o Alberga Business Park, 6 krs, Bertel Jungin Aukio 5, 02600 Espoo, Business Identity Code: 0357606 - 4, Domiciled in Helsinki X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260518_045539_513748_C54D4F8A X-CRM114-Status: UNSURE ( 7.59 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-i3c@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-i3c" Errors-To: linux-i3c-bounces+linux-i3c=archiver.kernel.org@lists.infradead.org Hi This series tightens the I3C core's handling of Hot-Join across system suspend, shutdown and unregister, consolidates the per-driver Hot-Join worker into the core, and finally wires the MIPI I3C HCI driver into the new Hot-Join framework. It applies on top of: https://lore.kernel.org/linux-i3c/20260504113352.38490-1-adrian.hunter@intel.com/ Patches 1-2 fix latent races in the existing Hot-Join machinery (suspend vs. Hot-Join work, and concurrent sysfs writers). Patches 3-5 consolidate the per-driver Hot-Join worker into the core and add proper teardown via an i3c_bus_type shutdown callback. Patch 6 defers driver-model registration of newly discovered devices out of the DAA caller's context, so resume-time DAA does not push device probing into the controller's resume sequence. Patches 7-8 add Hot-Join support to MIPI I3C HCI. Changes in V2: i3c: master: Make hot-join workqueue freezable to block hot-join during suspend Add Fixes tag Add Frank's Rev'd by i3c: master: Serialize i3c_set_hotjoin() with the maintenance lock Add Fixes tag i3c: master: Consolidate Hot-Join DAA work in the core Add Frank's Rev'd by i3c: master: Ensure Hot-Join operations are stopped on shutdown Add dependency note to commit message Add Fixes tag Add Frank's Rev'd by i3c: dw: Drop redundant Hot-Join cancel_work_sync() in shutdown Add Frank's Rev'd by i3c: master: Defer new-device registration out of DAA caller context Add comment about reg_work use Add Fixes tag i3c: master: Export i3c_master_enec_disec_locked() Add Frank's Rev'd by i3c: mipi-i3c-hci: Add Hot-Join support Add Frank's Rev'd by Adrian Hunter (8): i3c: master: Make hot-join workqueue freezable to block hot-join during suspend i3c: master: Serialize i3c_set_hotjoin() with the maintenance lock i3c: master: Consolidate Hot-Join DAA work in the core i3c: master: Ensure Hot-Join operations are stopped on shutdown i3c: dw: Drop redundant Hot-Join cancel_work_sync() in shutdown i3c: master: Defer new-device registration out of DAA caller context i3c: master: Export i3c_master_enec_disec_locked() i3c: mipi-i3c-hci: Add Hot-Join support drivers/i3c/master.c | 129 ++++++++++++++++++++++++++------- drivers/i3c/master/dw-i3c-master.c | 15 +--- drivers/i3c/master/dw-i3c-master.h | 2 - drivers/i3c/master/i3c-master-cdns.c | 14 +--- drivers/i3c/master/mipi-i3c-hci/core.c | 50 ++++++++++++- drivers/i3c/master/mipi-i3c-hci/dma.c | 5 ++ drivers/i3c/master/mipi-i3c-hci/hci.h | 1 + drivers/i3c/master/mipi-i3c-hci/pio.c | 5 ++ drivers/i3c/master/svc-i3c-master.c | 14 +--- include/linux/i3c/master.h | 16 +++- 10 files changed, 179 insertions(+), 72 deletions(-) Regards Adrian -- linux-i3c mailing list linux-i3c@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-i3c