From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.20]) (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 E0A5F41A909; Fri, 7 Aug 2026 14:57:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.20 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786114650; cv=none; b=oMRxx9F/JsTVmGweDtGD/AutVzgcLQMXD+hhv/B78z+OhzfO5h2Yw1Zge1dl+RLsqascG+Ig9YlcvyY38SBB8Gkgh2masHjKJ9ThI1IUraN6Sy4l0cTJ/C2YCVIO0qIx4qbO4PptTU9W5U6/Q+GvfyNS2aGY9hbLjYtfdkpwbXk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786114650; c=relaxed/simple; bh=ctrlY3FM28tivUxIv2sCpxma8DQO19RH1AD6gnz/0ck=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=n2E7JP3loJUBhO/PyJcsVNpwHRWl6suCkNl5Ty3l09L0SEiVjgJLjngLttKdglCfmn2j7kNuVGOpIbjvcTlP4QZCRstPCq5dB4tck+l4iUvbpt5XQWXU8MTN1mqGOPlGat9Ar2tiUHGni4y8DEl6pYtd/8U2mjU1nvt82RtrblA= 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=Ti94ir1W; arc=none smtp.client-ip=198.175.65.20 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="Ti94ir1W" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1786114649; x=1817650649; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=ctrlY3FM28tivUxIv2sCpxma8DQO19RH1AD6gnz/0ck=; b=Ti94ir1WdVoWn93JQKie1d1t8/xdtesQ7qAwo7L1QkuxABT9N2zJOhvG iVnQlMD78CkiHjAz8FNJjNE9+jGqjdzkiCsbrGcY5En9xvTtNDsZXopC8 CNEXCctBlEGPdPqbK6XCoDhlJt7LtwXgMLajrUkRT+fiI4AlHj6E+V+AO +OYqQqbnpoofmhtp9o0eExjyiGSFvXpOvE6x29JAFKKqA0axrfRq9vafq OC8TRmYe+FVVNWm6YMcATLytpUkq+bYy8cY++0QbqvRRq8F6LD+klW+dZ AEq3Hi5nMBDpMgWXG5mOzu7XWT0GKvV9K60FM4uIKx+WT0V0nKVucOvsf w==; X-CSE-ConnectionGUID: 5pMFbz0JQKC++9mUAvqLEw== X-CSE-MsgGUID: y/VcPs1OT7K0+aTXq9NmQQ== X-IronPort-AV: E=McAfee;i="6800,10657,11868"; a="86485196" X-IronPort-AV: E=Sophos;i="6.25,210,1779174000"; d="scan'208";a="86485196" Received: from fmviesa008.fm.intel.com ([10.60.135.148]) by orvoesa112.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Aug 2026 07:57:25 -0700 X-CSE-ConnectionGUID: JLBFR8nDTG6LJmPzP2Hqog== X-CSE-MsgGUID: vwoskQALRtORVlH9McSGhQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,210,1779174000"; d="scan'208";a="259809880" Received: from amilburn-desk.amilburn-desk (HELO ahunter6-desk) ([10.245.245.114]) by fmviesa008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Aug 2026 07:56:54 -0700 From: Adrian Hunter To: alexandre.belloni@bootlin.com Cc: Frank.Li@nxp.com, akhilrajeev@nvidia.com, mukesh.savaliya@oss.qualcomm.com, rafael@kernel.org, linux-i3c@lists.infradead.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org Subject: [PATCH V5 03/14] i3c: master: Do not treat master device as a duplicate target Date: Fri, 7 Aug 2026 17:56:27 +0300 Message-ID: <20260807145638.168865-4-adrian.hunter@intel.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260807145638.168865-1-adrian.hunter@intel.com> References: <20260807145638.168865-1-adrian.hunter@intel.com> Precedence: bulk X-Mailing-List: linux-pci@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 i3c_master_search_i3c_dev_duplicate() searches the bus for another I3C device with the same PID as the reference device. The search can match master->this, causing the controller itself to be returned as a duplicate. Since the controller is not a target device, it cannot be a duplicate of one. Exclude master->this from matching so that the function only returns real duplicate target devices. Fixes: 3a379bbcea0a ("i3c: Add core I3C infrastructure") Cc: stable@vger.kernel.org Signed-off-by: Adrian Hunter Reviewed-by: Frank Li Acked-by: Mukesh Savaliya --- Changes in V5: None Changes in V4: Added Frank's Rev-by and Mukesh's Acked-by tags Changes in V3: New patch drivers/i3c/master.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c index c7bb52b71d88..abb582645a2e 100644 --- a/drivers/i3c/master.c +++ b/drivers/i3c/master.c @@ -2545,7 +2545,8 @@ i3c_master_search_i3c_dev_duplicate(struct i3c_dev_desc *refdev) i3c_bus_for_each_i3cdev(&master->bus, i3cdev) { if (i3cdev != refdev && i3cdev->info.pid && - i3cdev->info.pid == refdev->info.pid) + i3cdev->info.pid == refdev->info.pid && + i3cdev != master->this) return i3cdev; } -- 2.53.0