From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 335603F6C2A for ; Fri, 4 Sep 2026 04:37:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788496650; cv=none; b=MxocXwsHUBbduJT6Pl5wegRDcPe9Zw5iLQMSXIKG83ksNcPrRdQBNhnhrdHVentrcgk1cwFio8GyUlWu0QHh7LJHhmRlUlUse+9LbK6ZQ7xT5ms/jKI49jLNJNllJrCX+g3HN53KlqWeh/4hSvNYTlkuMarUrDunEIs3nGNuTT4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788496650; c=relaxed/simple; bh=weAV8YhpsNW06IM3u/or2mFMlPde8nNy8CnAobA8HTA=; h=Subject:To:Cc:From:Date:Message-ID:MIME-Version:Content-Type; b=Jr9YQ4g0FNCgzWmOsrqOpGxQi73/hX/wOgmrgT4gUdUCsICQSKgshU+PBcsUoPviBr2H/VgGPkXohalMZa55tCQZFPb6RXsH+/4VAQIEGR8/6KQtEMBZbsw27ul5FA1mowRBKI/BKdEjAfy+Ttk5GDdUVMu/nTOcXtoD9pbw1Nc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=TCCgtb21; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="TCCgtb21" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5A22F1F00A3D; Fri, 4 Sep 2026 04:37:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1788496648; bh=BfBmooSp+cL9R9pbeU8jKCAgGRmOOd03SjX+tPcLhgY=; h=Subject:To:Cc:From:Date; b=TCCgtb21p200eY4miqoHFYfbDWK4rKgzzOQkKMDDKvQvWTFS+eS8lD7oEfW1gZMhV WMa9LydSsjal218zAkT0RoigAa6PyttZDspQj3scbbtmao4E2VzSGd9JfU1zvQB57J qliAg+8zqglSO30oOiLs6O/fg7Y7y/H7G5LCvhMs= Subject: FAILED: patch "[PATCH] i3c: master: Do not treat master device as a duplicate target" failed to apply to 6.12-stable tree To: adrian.hunter@intel.com,Frank.Li@nxp.com,alexandre.belloni@bootlin.com,mukesh.savaliya@oss.qualcomm.com Cc: From: Date: Fri, 04 Sep 2026 06:37:11 +0200 Message-ID: <2026090411-splice-widow-13ac@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit The patch below does not apply to the 6.12-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.12.y git checkout FETCH_HEAD git cherry-pick -x 4dc1b3eeba7991905a5b5b8129ebea51be7d87b7 # git commit -s git send-email --to '' --in-reply-to '2026090411-splice-widow-13ac@gregkh' --subject-prefix 'PATCH 6.12.y' 'HEAD^..' Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 4dc1b3eeba7991905a5b5b8129ebea51be7d87b7 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Fri, 7 Aug 2026 17:56:27 +0300 Subject: [PATCH] i3c: master: Do not treat master device as a duplicate target 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 Link: https://patch.msgid.link/20260807145638.168865-4-adrian.hunter@intel.com Signed-off-by: Alexandre Belloni 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; }