From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 2B2782641F9; Wed, 30 Jul 2025 09:55:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753869322; cv=none; b=LrXyghDdPvYA2JgFE1hxIBo+qgE/qlaIwaohStNjE4k5Z7OzJJK966MrEd9WFsoT23Ifh8j4b0XRhNR/ib/6tklw7+xiX+l1M1hAZ9fRO6xEy6cDwyAGZhYflLOin31hQQRnxkBR8d1zFUbgjBwaKK//iPCSSRDutAPNm75szIM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753869322; c=relaxed/simple; bh=H/g1WqjspOtzoDjcbM5cGHomJvojqflKCFtaDB+bBYo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=blAhrpLxOa+oVFeUa/DXw3nkYt8S07iG40eeL+AMt+0MwJHFDLd+afS/QqvfJu91p7TB3My5y9rWVmll40GqryhdMyzmaG+rzJBWb0V2ekWSdyXTCZCzPsQFVbDf1PHPZG22EWY2AujYySrlZLdlUx2iZh3Z7expZ8NmnjrQRkM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=mRIVnELW; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="mRIVnELW" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 175A8C4CEE7; Wed, 30 Jul 2025 09:55:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1753869321; bh=H/g1WqjspOtzoDjcbM5cGHomJvojqflKCFtaDB+bBYo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mRIVnELWX8DzFC3BYcof9DmPP9QvEnj7UYlG/rUvRNZu86N5Aw3Lcmz7NDzxllegx J/z+PGzDbYMqEoExGKwlmlyjlWK5a05XgpSA6U8qq3RRIwOAnKpJ6rOHokxzwOkCst J6oq3Rd74B0PAxVno4kfV68epFHp/nRBzz5Crx10= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, stable , RD Babiera , Badhri Jagan Sridharan , Heikki Krogerus , Sasha Levin Subject: [PATCH 6.15 89/92] usb: typec: tcpm: apply vbus before data bringup in tcpm_src_attach Date: Wed, 30 Jul 2025 11:36:37 +0200 Message-ID: <20250730093234.180726464@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250730093230.629234025@linuxfoundation.org> References: <20250730093230.629234025@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: RD Babiera commit bec15191d52300defa282e3fd83820f69e447116 upstream. This patch fixes Type-C compliance test TD 4.7.6 - Try.SNK DRP Connect SNKAS. tVbusON has a limit of 275ms when entering SRC_ATTACHED. Compliance testers can interpret the TryWait.Src to Attached.Src transition after Try.Snk as being in Attached.Src the entire time, so ~170ms is lost to the debounce timer. Setting the data role can be a costly operation in host mode, and when completed after 100ms can cause Type-C compliance test check TD 4.7.5.V.4 to fail. Turn VBUS on before tcpm_set_roles to meet timing requirement. Fixes: f0690a25a140 ("staging: typec: USB Type-C Port Manager (tcpm)") Cc: stable Signed-off-by: RD Babiera Reviewed-by: Badhri Jagan Sridharan Reviewed-by: Heikki Krogerus Link: https://lore.kernel.org/r/20250618230606.3272497-2-rdbabiera@google.com Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm/tcpm.c | 34 +++++++++++++++++----------------- 1 file changed, 17 insertions(+), 17 deletions(-) --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -4404,17 +4404,6 @@ static int tcpm_src_attach(struct tcpm_p tcpm_enable_auto_vbus_discharge(port, true); - ret = tcpm_set_roles(port, true, TYPEC_STATE_USB, - TYPEC_SOURCE, tcpm_data_role_for_source(port)); - if (ret < 0) - return ret; - - if (port->pd_supported) { - ret = port->tcpc->set_pd_rx(port->tcpc, true); - if (ret < 0) - goto out_disable_mux; - } - /* * USB Type-C specification, version 1.2, * chapter 4.5.2.2.8.1 (Attached.SRC Requirements) @@ -4424,13 +4413,24 @@ static int tcpm_src_attach(struct tcpm_p (polarity == TYPEC_POLARITY_CC2 && port->cc1 == TYPEC_CC_RA)) { ret = tcpm_set_vconn(port, true); if (ret < 0) - goto out_disable_pd; + return ret; } ret = tcpm_set_vbus(port, true); if (ret < 0) goto out_disable_vconn; + ret = tcpm_set_roles(port, true, TYPEC_STATE_USB, TYPEC_SOURCE, + tcpm_data_role_for_source(port)); + if (ret < 0) + goto out_disable_vbus; + + if (port->pd_supported) { + ret = port->tcpc->set_pd_rx(port->tcpc, true); + if (ret < 0) + goto out_disable_mux; + } + port->pd_capable = false; port->partner = NULL; @@ -4441,14 +4441,14 @@ static int tcpm_src_attach(struct tcpm_p return 0; -out_disable_vconn: - tcpm_set_vconn(port, false); -out_disable_pd: - if (port->pd_supported) - port->tcpc->set_pd_rx(port->tcpc, false); out_disable_mux: tcpm_mux_set(port, TYPEC_STATE_SAFE, USB_ROLE_NONE, TYPEC_ORIENTATION_NONE); +out_disable_vbus: + tcpm_set_vbus(port, false); +out_disable_vconn: + tcpm_set_vconn(port, false); + return ret; }