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 D44EE3F86F8 for ; Fri, 4 Sep 2026 04:37:31 +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=1788496653; cv=none; b=HY7d7Hem7OYc2A0j15+OJSZAbKhm2x94NbNXhQI10FXBI5fqwl/90zHjY01gC4iPq+NHzsLC5J1oaKlF+ICsBILYWeE4hAzvN5215lECTeBXi1YNoE/rxypdM+o2aKkWETM0B95+JtGFk8qei9Sa3JSfnPtgeQxxs5sBZE/f1ws= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788496653; c=relaxed/simple; bh=XuOLSbHT9L8Sdqqn1sa+DSKwjewYDmWBd01CHn4brwk=; h=Subject:To:Cc:From:Date:Message-ID:MIME-Version:Content-Type; b=n1vJiCU8XHfRGGhOdgIuEqV0QNIAgM5SVjCRSnPZnHSz2e07IM4rZSjf4z33LSHX0pzGQWSH9XtqE7PCXU86WhX8GHBJA5XimiZ+H6X4X9fAdWrdTtd7jpBr5ZFHj8O2vzYYy2MCbLgtJ2X9fvrcJ3clhp5hEt8yW0Oew14fCE4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=lxBaPcS5; 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="lxBaPcS5" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 376941F00A3D; Fri, 4 Sep 2026 04:37:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1788496651; bh=qp+s4JiaVAyWB9QjLxwYw+Y8ztiq3bpJFPtzPwX9t0Q=; h=Subject:To:Cc:From:Date; b=lxBaPcS55hmSmuIcXHKV+klFZFU07B04fPOc1E4Fr/jyoE5zHLFxdpXQ+gqjubPhp WAnYY/BlWCmUEgLJ23oMpxNofygJRH5wrif2ZHkgIbGrY0/K/rQKzUroJZYNgDTGPi aZEnuLwkPHBii7H4FG0Pol2OniU4vIkhyJHJUpvE= Subject: FAILED: patch "[PATCH] i3c: master: Do not treat master device as a duplicate target" failed to apply to 5.15-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 06:37:12 +0200 Message-ID: <2026090412-disarm-stranger-9a23@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 5.15-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-5.15.y git checkout FETCH_HEAD git cherry-pick -x 4dc1b3eeba7991905a5b5b8129ebea51be7d87b7 # git commit -s git send-email --to '' --in-reply-to '2026090412-disarm-stranger-9a23@gregkh' --subject-prefix 'PATCH 5.15.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; }