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 27A24C2A09B for ; Fri, 7 Aug 2026 14:57:34 +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:References:In-Reply-To: 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: List-Owner; bh=YC+FjSmxK8FZiRXsMyCQGkWDvxq65FfbGhx/K0llJnE=; b=i/l+eFERMP8l9j DOur21w37sUvS/i6rtvbJRDSZ+taNjiTUp5b8rOqVNtw/fUmOGCjbt31UOYueP8NeiZnr5g5lHBog x4LBUZPVUNM6HeiGrLQTlEAE9ErJ8Bozrex4yN5spboCPWSG8sX1auIlI16RXHoOLWLmy7YDRetdR XbZsgxtj8pavazxs6Nd2q8ckJ0BABoZlTXTAiX+XeeI2aXXOhQBWSABiqWUedoSHLoEaxTvfTVa4T oPwqncRiuGBtbtR0wxnkw2rhvcVcWBnJAoNw6JskPROL7UHc+M6E6+wc779NLjK9a7ZnvfAabAoMJ SDQr8ejEBAxrDTHRbQbg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wsM0r-00000008IiZ-3XJY; Fri, 07 Aug 2026 14:57:33 +0000 Received: from mgamail.intel.com ([198.175.65.20]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wsM0o-00000008Ifs-340I for linux-i3c@lists.infradead.org; Fri, 07 Aug 2026 14:57:31 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1786114651; x=1817650651; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=ctrlY3FM28tivUxIv2sCpxma8DQO19RH1AD6gnz/0ck=; b=JdQdPCrTC6nSs8zF7QjL4kVxlgvxr1IDEOf6CR0KPIB+qmxk2R5K3J/P JRhXbyHwwk4UKBiYAfBLBlmS4VFpsUuEJSdfppBcP7RsB+44ZAxQcAerj 8FtWJaUDcGrYm8z3p6BOTgUatYadBmS5PwKCoZof9niUoIFicSwT8Ttb2 /33nweWCQU+uPwMA4dZz6bmmv6YyEY+3vXUqtlCCcAY9aIhFM7qtd5UV4 mM5Kl73SG0q9PtrJuZCJkDhPsAN9VvoTfZa4ieVfD52ZlMbSdMkspRo6/ 0ppTQ8SecDDl/n9kXnBIpLNoc58pdK/PHwRocMQj26eS3AkP3xfZYiWVg Q==; X-CSE-ConnectionGUID: 5Ngy1cQiRwaC/UHKbW4ZKQ== X-CSE-MsgGUID: 1wzLnVRWQBSSdoYnxNsMnA== X-IronPort-AV: E=McAfee;i="6800,10657,11868"; a="86485193" X-IronPort-AV: E=Sophos;i="6.25,210,1779174000"; d="scan'208";a="86485193" 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> 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-20260807_075730_809113_FDAAD172 X-CRM114-Status: UNSURE ( 9.88 ) 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 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 -- linux-i3c mailing list linux-i3c@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-i3c