From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.21]) (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 5774C38D41E for ; Tue, 12 May 2026 12:17:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.21 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778588267; cv=none; b=Ae7VhL7UbuUc97u43VTgsYSfC9cPgSZyUC5+/C6C+0mmAejXFLzxH2d5j9Wf86vQUaNB4HWleWafVwi03se7tH5TxAUS7RZp9M+Tc/Mi8vXtL1MjZORfaSGWxMv9htGP5ew0FFWSBVZnvFNWAlpdReDxEUyCrctaMNZwASb6iaI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778588267; c=relaxed/simple; bh=qBhB8vCjk7YqqUpkaqCninKnkkW67DKDLw8CTOVe/9I=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=bvrtKq5bEmvo0vFrtgYBM4AdkN7lW3R43soWIzW7MexIyAmmz2gTXlUvvxLjEcV60m7T0nhL1qLvIdsE7+hTWXyZAWu/Ka5hp81Vz/H7AiCvLkHSRYw0uYFLM1SA/hdFahq2AwCmJpZzrOUqtDebwrpvx/NZP9dZfvwYLT65N00= 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=G9uRj6xb; arc=none smtp.client-ip=198.175.65.21 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="G9uRj6xb" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1778588267; x=1810124267; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=qBhB8vCjk7YqqUpkaqCninKnkkW67DKDLw8CTOVe/9I=; b=G9uRj6xbhsGgK9S3WtzIixrYErpI32QD+ifCAzbsB7Hy9LImgCNMdqts 7oJ4N7ZYfhmdrnQW4ocaZ12wcSe6WN7yJEhQpFJcLLSoG8h7SvA4pPdA7 wmNLtEixV59NR+djHXMHJRGeeIHG9JxItTeALzvuArvgTvtJGEOGqx74h 5qJKy/kwiMuAynh4a/jG28i2b49etAhrW4AQDZsrVlua9hEqGj4gao8ZZ nlyvrILeD2ub74eJ2tpLRhYwGfn9MQ911V8N6oYpmzpwQ/jf6dVfxXla7 vjeC1bZvK3Fj+lis6oZd/xTbJ2xiULL4KKNS0S+8yD+B8tJR8jTum9fiQ w==; X-CSE-ConnectionGUID: r6eJdhxyTkyQBnGxl09Y/Q== X-CSE-MsgGUID: zmwgg0NyR5yRD/mhFDWCMQ== X-IronPort-AV: E=McAfee;i="6800,10657,11783"; a="79389479" X-IronPort-AV: E=Sophos;i="6.23,230,1770624000"; d="scan'208";a="79389479" Received: from orviesa003.jf.intel.com ([10.64.159.143]) by orvoesa113.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 May 2026 05:17:46 -0700 X-CSE-ConnectionGUID: gpy7RxJcTay2GCEox6lm1A== X-CSE-MsgGUID: a02qa4dHQYefHpE6zp/QfA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,230,1770624000"; d="scan'208";a="241756118" Received: from amilburn-desk.amilburn-desk (HELO ahunter6-desk) ([10.245.245.121]) by ORVIESA003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 May 2026 05:17:44 -0700 From: Adrian Hunter To: alexandre.belloni@bootlin.com Cc: Frank.Li@nxp.com, linux-i3c@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 0/8] i3c: Hot-Join improvements and MIPI HCI Hot-Join support Date: Tue, 12 May 2026 15:17:24 +0300 Message-ID: <20260512121732.406009-1-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. 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. 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 | 123 ++++++++++++++++++++++++++------- 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, 174 insertions(+), 71 deletions(-) Regards Adrian