From nobody Fri Jan 2 05:00:13 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DF6BECDB482 for ; Sun, 15 Oct 2023 03:59:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233460AbjJOD6s (ORCPT ); Sat, 14 Oct 2023 23:58:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47600 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233390AbjJOD6q (ORCPT ); Sat, 14 Oct 2023 23:58:46 -0400 Received: from mail-pj1-x104a.google.com (mail-pj1-x104a.google.com [IPv6:2607:f8b0:4864:20::104a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3E7F1DC for ; Sat, 14 Oct 2023 20:58:42 -0700 (PDT) Received: by mail-pj1-x104a.google.com with SMTP id 98e67ed59e1d1-27cefad6c6fso2654761a91.2 for ; Sat, 14 Oct 2023 20:58:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1697342321; x=1697947121; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=shh/0TwHJv/d7VwXwypDokr6btLr6DjEH1mcpVIpW4Y=; b=Dkrdn8PPycjNl9+oo/M69VPCpl/RIWyeCgx7vfAxSpokgEvCUjBm2LKfiQsqurgITc HBeKxcw/HBYQL1HTQagAd2YKc3+IUpLsoY5Ib90lB+6D60hLjitSys1+auNU/7o6H4L6 K3MLYhBiRSmTadxmY9jJEL448tq/EGEzK2QkDKAwfpIJ+9sJVerXZxD2a27klEzPbGvP p84Z8JWlxdLl/cXtlMMKIjdw3Yy4CKns7RxydaXw/2QLGDYJ2JlNJ7QX4NnzfV6+4wsC WC+nbZYvI+QujG96fiCYZw2HrVURE15wbE3ecdfSo9+Ai0B3jciPKXmJ/iTU+yKSqc0N vK9A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697342321; x=1697947121; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=shh/0TwHJv/d7VwXwypDokr6btLr6DjEH1mcpVIpW4Y=; b=Etsh+PgWPsSzDuZB/+3cIAy5uHQaDFX2AwALUYJyFDLXN2CkffldgbO2OneLiYFXqX x+jnIxTHpAWgb71pQyM3BYoYKaTmZ7tJOeUkF2TR0NtXw1UVOfesOWAVTZ0rEzTEpTkR 2freTDyIeDwdv19O50j2TI9I7Q1teQ8HnSIgwll4rbPnyfzggU9dzgv++Hjf2KaK/meC O0KJrN42imndL57C2EYwIcdcVQGtef2qpFHW31Xl1DOTVFyvU2bYvy19u7KuEm1XMgvK RdFgwez2qOVX8ZAo48qw1iMmCkfl3fxh5Yo2sjjMnO47ALstdfK2km+otWU32vFNXJ3A Kf9g== X-Gm-Message-State: AOJu0Yz+AHQqxssbl0W1tpHcbWxYbkIxiNlgYrnJsgMQEtVGUAep+xlM v/eeZ1XR/p2Of3XVxyfu+MER046IZnM= X-Google-Smtp-Source: AGHT+IE35cKxw5sBD/mR/Q5zVjNgyUV6uOsgqpFlMr7NvVz4geHj4d2P/SIA/RzrV79Ze0sb1nppTIv/pgo= X-Received: from badhri.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:6442]) (user=badhri job=sendgmr) by 2002:a05:6a00:1792:b0:68f:a681:390a with SMTP id s18-20020a056a00179200b0068fa681390amr737762pfg.0.1697342321622; Sat, 14 Oct 2023 20:58:41 -0700 (PDT) Date: Sun, 15 Oct 2023 03:58:38 +0000 Mime-Version: 1.0 X-Mailer: git-send-email 2.42.0.655.g421f12c284-goog Message-ID: <20231015035838.2207567-1-badhri@google.com> Subject: [PATCH v2] usb: typec: tcpm: Fix sink caps op current check From: Badhri Jagan Sridharan To: gregkh@linuxfoundation.org, linux@roeck-us.net, heikki.krogerus@linux.intel.com Cc: kyletso@google.com, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, rdbabiera@google.com, amitsd@google.com, stable@vger.kernel.org, Badhri Jagan Sridharan Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" TCPM checks for sink caps operational current even when PD is disabled. This incorrectly sets tcpm_set_charge() when PD is disabled. Check for sink caps only when PD is enabled. [ 97.572342] Start toggling [ 97.578949] CC1: 0 -> 0, CC2: 0 -> 0 [state TOGGLING, polarity 0, discon= nected] [ 99.571648] CC1: 0 -> 0, CC2: 0 -> 4 [state TOGGLING, polarity 0, connec= ted] [ 99.571658] state change TOGGLING -> SNK_ATTACH_WAIT [rev3 NONE_AMS] [ 99.571673] pending state change SNK_ATTACH_WAIT -> SNK_DEBOUNCED @ 170 = ms [rev3 NONE_AMS] [ 99.741778] state change SNK_ATTACH_WAIT -> SNK_DEBOUNCED [delayed 170 m= s] [ 99.789283] CC1: 0 -> 0, CC2: 4 -> 5 [state SNK_DEBOUNCED, polarity 0, c= onnected] [ 99.789306] state change SNK_DEBOUNCED -> SNK_DEBOUNCED [rev3 NONE_AMS] [ 99.903584] VBUS on [ 99.903591] state change SNK_DEBOUNCED -> SNK_ATTACHED [rev3 NONE_AMS] [ 99.903600] polarity 1 [ 99.910155] enable vbus discharge ret:0 [ 99.910160] Requesting mux state 1, usb-role 2, orientation 2 [ 99.946791] state change SNK_ATTACHED -> SNK_STARTUP [rev3 NONE_AMS] [ 99.946798] state change SNK_STARTUP -> SNK_DISCOVERY [rev3 NONE_AMS] [ 99.946800] Setting voltage/current limit 5000 mV 500 mA [ 99.946803] vbus=3D0 charge:=3D1 [ 100.027139] state change SNK_DISCOVERY -> SNK_READY [rev3 NONE_AMS] [ 100.027145] Setting voltage/current limit 5000 mV 3000 mA [ 100.466830] VBUS on Cc: stable@vger.kernel.org Fixes: 34fde9ec08a3 ("FROMGIT: usb: typec: tcpm: not sink vbus if operation= al current is 0mA") Signed-off-by: Badhri Jagan Sridharan Acked-by: Heikki Krogerus Reviewed-by: Guenter Roeck --- Changes since v1: * Fix commit title and description to address comments from Guenter Roeck --- drivers/usb/typec/tcpm/tcpm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index 6e843c511b85..994493481c24 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -4268,7 +4268,8 @@ static void run_state_machine(struct tcpm_port *port) current_lim =3D PD_P_SNK_STDBY_MW / 5; tcpm_set_current_limit(port, current_lim, 5000); /* Not sink vbus if operational current is 0mA */ - tcpm_set_charge(port, !!pdo_max_current(port->snk_pdo[0])); + tcpm_set_charge(port, port->pd_supported ? + !!pdo_max_current(port->snk_pdo[0]) : true); =20 if (!port->pd_supported) tcpm_set_state(port, SNK_READY, 0); base-commit: 1034cc423f1b4a7a9a56d310ca980fcd2753e11d --=20 2.42.0.655.g421f12c284-goog