From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.9]) (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 5B9EA35C19D for ; Mon, 8 Jun 2026 05:43:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.9 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780897405; cv=none; b=IX7SL08X7zyoERKKHR/jxnn/ErRWutLHdvau22TCm+fkmpcgb7ACo/p43LMgYBqk3mbTZKAh2GNeqnpkoGgXNKqivys/we4wuKHPJYP7ktEqlJcbX0aeao5gNijUKW0ChTkJE/T/J2lhU+cCUUvJVjkMuRnlDolOp84DwNjlMfI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780897405; c=relaxed/simple; bh=VwUizN8TyqgxzPB10sCnLjXm38KpHEK7Ds9P8/PIOac=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=Si9BPIM+wd/Jp2+SZ3lzEzeH0GCmmFuRBW3wzlbgLGk/M/jFIAVJ7i5zP+ZuGJHPQEg4EsahA+rK7bfch9Rc6IJ9LFI2sdIEy2DHjofRFB7sDXFyWrIfeoq1URX6WJMZsrAeVCgIyI5sZNFWXm8ToquPZ9hwyZUg5NVSAKB0Ep4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=hRcadkCO; arc=none smtp.client-ip=198.175.65.9 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="hRcadkCO" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1780897404; x=1812433404; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=VwUizN8TyqgxzPB10sCnLjXm38KpHEK7Ds9P8/PIOac=; b=hRcadkCOCs8GHB7h8GbBVmOcOIm/QWQpJK9693gI6C6RH1sKcN/76zoK LU66KqJrFvRdLt6c0ThGmW/zdDvdHdEMKOwtkNbv40lDFsmZyPTIsGMmL nO83R+7wfl2/d1OtwSjdXpaylgB4UF1/zvQM2jkk7sYMN+F15iLlHDDUv 7ddwM2K5LgSgRNDjL8ILGTLQ9EHoqKtEa72dFtd5vx4SNKLscU4DYkyec YudGL9LWshg4e19bsgwekWhDndFzlRHr5SyZgTyASKcNKVMapT1KoMC9M 7+xq27iEUmX1AmpuV3jJc1pn4pSSA+yd2qclW+AcV2q2aI8vYSDcgZf1c w==; X-CSE-ConnectionGUID: wl4CJxLFTGarxAWwlaUC8Q== X-CSE-MsgGUID: Ww0cH7xFSmGP0FjvsoSqbA== X-IronPort-AV: E=McAfee;i="6800,10657,11810"; a="104284009" X-IronPort-AV: E=Sophos;i="6.24,193,1774335600"; d="scan'208";a="104284009" Received: from orviesa009.jf.intel.com ([10.64.159.149]) by orvoesa101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Jun 2026 22:43:23 -0700 X-CSE-ConnectionGUID: zNpIMTRuQOyJnaQZ129WHQ== X-CSE-MsgGUID: JxMSitg/RXqXGeVwe8qUnw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.24,193,1774335600"; d="scan'208";a="245505648" Received: from conormcd-mobl2.ger.corp.intel.com (HELO ahunter6-desk) ([10.245.244.114]) by orviesa009-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Jun 2026 22:43:20 -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 V3 0/8] i3c: Hot-Join improvements and MIPI HCI Hot-Join support Date: Mon, 8 Jun 2026 08:43:04 +0300 Message-ID: <20260608054312.10604-1-adrian.hunter@intel.com> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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 Content-Transfer-Encoding: 8bit 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. Note all patches have now been reviewed by Frank. It applies on top of: https://lore.kernel.org/linux-i3c/20260603090754.16252-1-adrian.hunter@intel.com/ which is also fully reviewed by Frank. 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 V3: i3c: master: Serialize i3c_set_hotjoin() with the maintenance lock Add Frank's Rev'd by i3c: master: Defer new-device registration out of DAA caller context Add Frank's Rev'd by 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