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 08FBCC55184 for ; Tue, 4 Aug 2026 13:38:32 +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=RWeEunGPfLI1H+L5KbNJi8kPpxrv+4qTGUJrz7CQB2w=; b=yfu1z+vM2uyuq9 LIIhkl8jyC0PHmM4oGs1Ixm99hnkhW6brmh2WioVmpalMHPhNG/Fw1e4riSWKv/u2lFeqU7Skx6TQ FrvtXoVTf1VJz0jFnlY0zH2m36r1+EEwK7Q2qYKfhszh1lnIxJZC/CVz5JEPgDiWo67chlFiHkhzr SVMShrgotCMTxWP91tFABPssvaDdc716dLvK81LiM1mNrvBZJj1bqor6njh5remwIwfNMNLJY1+ml zC//LNEJNeiY97M+nAsOZquiytLw8Pwv/an2uO3BJ8jOyVzde6iBQ21Dekllh6NeleUvjkRofyEXr CwJVC08pK4WZ1sGfbzGw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wrFLj-00000001wS9-373P; Tue, 04 Aug 2026 13:38:31 +0000 Received: from mgamail.intel.com ([198.175.65.17]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wrFLh-00000001wP5-01Yj for linux-i3c@lists.infradead.org; Tue, 04 Aug 2026 13:38:30 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1785850709; x=1817386709; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=voeBAnGBFWyl9y6fsdJxZVdFpnCWoucAS4P5V6Enbi4=; b=K0BG90F/ATOBzlJ83Zz2Zmu2tG9GohytGgJ+QNA2PhBWmmlnlzv8VxQQ QB3BfYKBXL5aYKYlIz6hxgZ1vvYLVfVVsySmn0d/F0euZQdD7tkM65inl lqYmAVV4pxnPsoM4leNb08IKREpoM3m2hzfBklWkpzpUJSxXsyB3skzzN CmjYGNDEs4xb4Z1v7tIyju1Ny4uMniFcwRUiHc+3K+9jcr9kV50LfbK5B Bych4c2Odq7dGRDEwHJYcSByC7qKCy6PVrsWd+gUvBNBI6z2HBy8C+Fwj zm/p3w9xquihlZcqKWbHKXmqUCK1aAZZS7yBAe4y9+RmSWkKMzqDjzeG6 w==; X-CSE-ConnectionGUID: myT9IbYpTq+wkm5owXIcYQ== X-CSE-MsgGUID: b12cidRzS8ScE1b1i4dR8Q== X-IronPort-AV: E=McAfee;i="6800,10657,11864"; a="86410101" X-IronPort-AV: E=Sophos;i="6.25,204,1779174000"; d="scan'208";a="86410101" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by orvoesa109.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Aug 2026 06:38:29 -0700 X-CSE-ConnectionGUID: KlR37LwqQYGGpeUnydrrPA== X-CSE-MsgGUID: OiGhG4D/TsyUrJucXriXRg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,204,1779174000"; d="scan'208";a="263501008" Received: from mkosciow-mobl1.ger.corp.intel.com (HELO ahunter6-desk) ([10.245.245.132]) by fmviesa004-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Aug 2026 06:38:26 -0700 From: Adrian Hunter To: alexandre.belloni@bootlin.com Cc: Frank.Li@nxp.com, akhilrajeev@nvidia.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 V3 03/14] i3c: master: Do not treat master device as a duplicate target Date: Tue, 4 Aug 2026 16:37:59 +0300 Message-ID: <20260804133810.184905-4-adrian.hunter@intel.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260804133810.184905-1-adrian.hunter@intel.com> References: <20260804133810.184905-1-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-20260804_063829_086287_08B80652 X-CRM114-Status: GOOD ( 10.24 ) 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 --- 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