From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-dy1-f181.google.com (mail-dy1-f181.google.com [74.125.82.181]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 87BDF3B2FD0 for ; Tue, 12 May 2026 20:43:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.181 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778618596; cv=none; b=VYvz22eMrAlPZ+dH5qo1qtNryn3JgoXSDaq6T5RGVLHOESl8OCzalD8/s4MB+Ck5qgmaYYRL6OdFAhWC3XxSFOaimEYQmH9O6pPSAsecjwZhleBWbErExGqGf6Amhe5IKSyIiwwrntrR2IdHgDR3bWl+iASutt7Ykkrug8bAQ3A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778618596; c=relaxed/simple; bh=kg4NlVLFvpcet+/cj6Ad8BEvgEVUqQ5ua+TsGgeN3Rs=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=tUxZXf5n/AcYP2cxFGT09HHYkkv2txYDXxtuJ5XJx0EHiF+PXN3wxY2HuAanAYIVAqKKmuOXGH1hn4jmviGkxaaEtQdsGjMQULM/HfUbmWcmjgP6X/+sjVG/cYSkKqKBXNjD7BSGHbzzs3zFYwhLLtzPlWO00ewmWMb5EhvJS44= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=piKUebGO; arc=none smtp.client-ip=74.125.82.181 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="piKUebGO" Received: by mail-dy1-f181.google.com with SMTP id 5a478bee46e88-2f03d6cf77bso6788083eec.0 for ; Tue, 12 May 2026 13:43:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1778618595; x=1779223395; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=C9lR0A9k7VO7RFKQ4e5f3LHHZHyRUjtt/Q+YXL4+DFc=; b=piKUebGOc731XNr2bYOwNguBpq/7zZ1Zf+vxHAvGN4SB3sdKf7NiShUdpWoBUWSw67 6LT8589bjH+bVhTKsj6KQS+WFSEytdgNjnfdNZKzvkPGIqpL9Pc6q6jCzvUUZVgh5PkO OTWXVYj53gaNmgaQLz70W9E5bGDjoTjxInKq8hcDsGZWH8Q8szmdzH5iD5clp0MUBWnc 3ENTK89bSzZ8JFOKaCsfJJDv8h3wFseWbgvEynMRMMZ2+LvFnssp6lzF/VeGoPg8ZYXp IOirUzi1nv/24RPWd21nQsQMT8Dm8DiogIDSFmoQDzsj5le4LYjqzL8GxU1/y29cu4zh rlgA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1778618595; x=1779223395; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :x-gm-gg:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=C9lR0A9k7VO7RFKQ4e5f3LHHZHyRUjtt/Q+YXL4+DFc=; b=URDi1fUJbGdXZfxjgnhXa2oGhG40mU9xsTCn8Lk/yNM5qC9Bm3GYwNzFk43I/r3zxy rv6sTrvKXdZ2fixSBLbvc/Utz1041cL25xt5IlsJCcyVAAPVSCz6jDdODJEp1tkld7F5 atvkV0M4LXtDFLcNVjFtUC8SJBWOd2DCsOqqzNEEQhwbMo0CdOIiBiz6ueF/UjGmvCRJ 1LfX7dkPz6o+ey5q+hQdKvwit5bPQUN2fp5t2epMtMkbcnhlTSzhLIEBc1HNGVPPKS6V //ZDvANmXkefpizAsAiEGSGbS8FaKaieR9x1OOx210ra7zhevPn0imWeOVZ455Nme5Im hlcg== X-Forwarded-Encrypted: i=1; AFNElJ9xhtDCLh672yHbHhZG0n9FArNkc6CDZYOho+TkYDI8WEyibBCjQG0JUe81WB2Jc0E0yTFJF4k=@vger.kernel.org X-Gm-Message-State: AOJu0YwPaJLuUzXrCkxIUOMk+gFimJ7Gaa3+1Nq90Z3oYRwZZXn9UkPi KS8rTNQ/K4P5pPMx/qNbKmqG6eFo5CO483NO5zwmE9zpoZNvd44DUmuPYI4fWQLGpLi7WZ0zSTw 0wq7Hvnvy X-Gm-Gg: Acq92OGv91ZmQbqaXVdIblV1MCYtTrHm+7Xk6+fkln3b566hK+3IYht6MsRdSGsvcEm tCC8CCQGQGrgon7UlQaAOyu3IclAKQ9cA2CAsRKEE3xbTButThnKwi8wsDj6HNtQ0lXxsD2weCp XiTG9yRX7qaRRYuSMRpjj6WaAaj/VOYThVCx0gJgeumu9vAaKTmpQxoTUhMgGwCZwF/eSLY9KgC Y7BlhQMdnTbfwwL+cqn5nxzmIEvWjQb3gxkFqXY4bpiAslGtPMGsew23+D5ojtXn9RZ5ug8i7td U94/r4bIN8rdC0XsUeVMkp5XqZ8bgY5hQYPo5P7MMurUqADpxevz6MIApm2i1Eb+S/bveOhk/1i bqWn5oamv7OqkGa/xpBMTaxX/5m+KmRbZU9plQy76k3gUbLMTHowwgpx0rNlF2EqqC5kklbkU7d l9g99Dvh1LRf0v2Pg5QwtYGG6w1pCXvXvbom6VvWRagSdiHTNK4ZGNe4wmJZ8PI5U971c52RTCE YtaNe8GuFRftM7gKYB9KYhcZEdDWJvbfbE0 X-Received: by 2002:a05:7301:6783:b0:2de:aafb:feff with SMTP id 5a478bee46e88-30117c73cddmr372091eec.2.1778618593919; Tue, 12 May 2026 13:43:13 -0700 (PDT) Received: from ?IPV6:2a00:79e0:2e7c:8:839b:f905:79b7:838f? ([2a00:79e0:2e7c:8:839b:f905:79b7:838f]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2f8859eafc2sm24437991eec.4.2026.05.12.13.43.12 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 12 May 2026 13:43:13 -0700 (PDT) Message-ID: <4b812fea-fd3f-45e0-a377-3ded43fba700@google.com> Date: Tue, 12 May 2026 13:43:11 -0700 Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 6.18 043/270] usb: typec: tcpm: reset internal port states on soft reset AMS To: Greg Kroah-Hartman , stable@vger.kernel.org Cc: patches@lists.linux.dev, stable , Badhri Jagan Sridharan , Heikki Krogerus References: <20260512173938.452574370@linuxfoundation.org> <20260512173939.360401506@linuxfoundation.org> Content-Language: en-US From: Amit Sunil Dhamne In-Reply-To: <20260512173939.360401506@linuxfoundation.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Hi Greg, On 5/12/26 10:37 AM, Greg Kroah-Hartman wrote: > 6.18-stable review patch. If anyone has any objections, please let me know. > > ------------------ > > From: Amit Sunil Dhamne > > commit 2909f0d4994fb4306bf116df5ccee797791fce2c upstream. > > Reset internal port states (such as vdm_sm_running and > explicit_contract) on soft reset AMS as the port needs to negotiate a > new contract. The consequence of leaving the states in as-is cond are as > follows: > * port is in SRC power role and an explicit contract is negotiated > with the port partner (in sink role) > * port partner sends a Soft Reset AMS while VDM State Machine is > running > * port accepts the Soft Reset request and the port advertises src caps > * port partner sends a Request message but since the explicit_contract > and vdm_sm_running are true from previous negotiation, the port ends > up sending Soft Reset instead of Accept msg. > > Stub Log: > [ 203.653942] AMS DISCOVER_IDENTITY start > [ 203.653947] PD TX, header: 0x176f > [ 203.655901] PD TX complete, status: 0 > [ 203.657470] PD RX, header: 0x124f [1] > [ 203.657477] Rx VDM cmd 0xff008081 type 2 cmd 1 len 1 > [ 203.657482] AMS DISCOVER_IDENTITY finished > [ 203.657484] cc:=4 > [ 204.155698] PD RX, header: 0x144f [1] > [ 204.155718] Rx VDM cmd 0xeeee8001 type 0 cmd 1 len 1 > [ 204.155741] PD TX, header: 0x196f > [ 204.157622] PD TX complete, status: 0 > [ 204.160060] PD RX, header: 0x4d [1] > [ 204.160066] state change SRC_READY -> SOFT_RESET [rev2 SOFT_RESET_AMS] > [ 204.160076] PD TX, header: 0x163 > [ 204.162486] PD TX complete, status: 0 > [ 204.162832] AMS SOFT_RESET_AMS finished > [ 204.162840] cc:=4 > [ 204.162891] AMS POWER_NEGOTIATION start > [ 204.162896] state change SOFT_RESET -> AMS_START [rev2 POWER_NEGOTIATION] > [ 204.162908] state change AMS_START -> SRC_SEND_CAPABILITIES [rev2 POWER_NEGOTIATION] > [ 204.162913] PD TX, header: 0x1361 > [ 204.165529] PD TX complete, status: 0 > [ 204.165571] pending state change SRC_SEND_CAPABILITIES -> SRC_SEND_CAPABILITIES_TIMEOUT @ 60 ms [rev2 POWER_NEGOTIATION] > [ 204.166996] PD RX, header: 0x1242 [1] > [ 204.167009] state change SRC_SEND_CAPABILITIES -> SRC_SOFT_RESET_WAIT_SNK_TX [rev2 POWER_NEGOTIATION] > [ 204.167019] AMS POWER_NEGOTIATION finished > [ 204.167020] cc:=4 > [ 204.167083] AMS SOFT_RESET_AMS start > [ 204.167086] state change SRC_SOFT_RESET_WAIT_SNK_TX -> SOFT_RESET_SEND [rev2 SOFT_RESET_AMS] > [ 204.167092] PD TX, header: 0x16d > [ 204.168824] PD TX complete, status: 0 > [ 204.168854] pending state change SOFT_RESET_SEND -> HARD_RESET_SEND @ 60 ms [rev2 SOFT_RESET_AMS] > [ 204.171876] PD RX, header: 0x43 [1] > [ 204.171879] AMS SOFT_RESET_AMS finished > > This causes COMMON.PROC.PD.11.2 check failure for > TEST.PD.VDM.SRC.2_Rev2Src test on the PD compliance tester. > > Signed-off-by: Amit Sunil Dhamne > Fixes: 8d3a0578ad1a ("usb: typec: tcpm: Respond Wait if VDM state machine is running") > Fixes: f0690a25a140 ("staging: typec: USB Type-C Port Manager (tcpm)") > Cc: stable > Reviewed-by: Badhri Jagan Sridharan > Acked-by: Heikki Krogerus > Link: https://patch.msgid.link/20260414-fix-soft-reset-v1-1-01d7cb9764e2@google.com > Signed-off-by: Greg Kroah-Hartman > Signed-off-by: Greg Kroah-Hartman > --- > drivers/usb/typec/tcpm/tcpm.c | 2 ++ > 1 file changed, 2 insertions(+) > > --- a/drivers/usb/typec/tcpm/tcpm.c > +++ b/drivers/usb/typec/tcpm/tcpm.c > @@ -5728,6 +5728,8 @@ static void run_state_machine(struct tcp > > case VCONN_SWAP_ACCEPT: > tcpm_pd_send_control(port, PD_CTRL_ACCEPT, TCPC_TX_SOP); > + port->vdm_sm_running = false; > + port->explicit_contract = false; Please drop this patch from the queue. It was incorrectly applied to the VCONN_SWAP_ACCEPT case instead of the soft reset handling due to context fuzz. I will send a proper rebased backport for the 6.18 stable tree shortly. Thanks, Amit >