From patchwork Thu Aug 29 10:01:09 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Christian A. Ehrhardt" X-Patchwork-Id: 13782927 Received: from cae.in-ulm.de (cae.in-ulm.de [217.10.14.231]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 992CA18E039; Thu, 29 Aug 2024 10:01:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.10.14.231 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724925708; cv=none; b=MvbO6qN0kK9XGtIV2EY3aV6l6rdtJSf54hC42342zyZ4T+EOpJoD4ueW+qAJ+6ce3H74PeiFSdzTzcHWv4LrU/rlpX+arClMxC0Qp5LhyKSZc79bP8Ptum+Af4Fu+Uj+Begv2/SQ/ySUuwiNjHUfwM4CKNESICwxEnbibE227QA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724925708; c=relaxed/simple; bh=dO9aGTEzHhiObaLZVHX6UxHyA7DmqONcFxkTgEUL38Q=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=HPPNnMSOFI19H7mUehfp7JhI6XKAYo9TvAgJO1lIwVGMe8v8IZyIF4D41swy90BPbbcRMt+HGbjWPswFTz8doofj8dS9vutIewpuZcmiJRE3AfqvgI5wO/iqu1d5SDsnw5cuiNreO8zyV8z4Z97ot8mw9r2qaVtbEdyUhjJ6AjI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=c--e.de; spf=pass smtp.mailfrom=c--e.de; arc=none smtp.client-ip=217.10.14.231 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=c--e.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=c--e.de Received: by cae.in-ulm.de (Postfix, from userid 1000) id 9C03B1403C9; Thu, 29 Aug 2024 12:01:36 +0200 (CEST) From: "Christian A. Ehrhardt" To: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Cc: "Christian A. Ehrhardt" , Anurag Bijea , Christian Heusel , Heikki Krogerus , Greg Kroah-Hartman , Dmitry Baryshkov , Jameson Thies , Abhishek Pandit-Subedi Subject: [PATCH v2 2/2] usb: typec: ucsi: Fix busy loop on ASUS VivoBooks Date: Thu, 29 Aug 2024 12:01:09 +0200 Message-Id: <20240829100109.562429-2-lk@c--e.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20240829100109.562429-1-lk@c--e.de> References: <20240829100109.562429-1-lk@c--e.de> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 If the busy indicator is set, all other fields in CCI should be clear according to the spec. However, some UCSI implementations do not follow this rule and report bogus data in CCI along with the busy indicator. Ignore the contents of CCI if the busy indicator is set. If a command timeout is hit it is possible that the EVENT_PENDING bit is cleared while connector work is still scheduled which can cause the EVENT_PENDING bit to go out of sync with scheduled connector work. Check and set the EVENT_PENDING bit on entry to ucsi_handle_connector_change() to fix this. Reported-by: Anurag Bijea Closes: https://bugzilla.kernel.org/show_bug.cgi?id=219108 Bisected-by: Christian Heusel Tested-by: Anurag Bijea Fixes: de52aca4d9d5 ("usb: typec: ucsi: Never send a lone connector change ack") Cc: stable@vger.kernel.org Signed-off-by: Christian A. Ehrhardt --- drivers/usb/typec/ucsi/ucsi_acpi.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/usb/typec/ucsi/ucsi_acpi.c b/drivers/usb/typec/ucsi/ucsi_acpi.c index 7a5dff8d9cc6..aa586525ab4c 100644 --- a/drivers/usb/typec/ucsi/ucsi_acpi.c +++ b/drivers/usb/typec/ucsi/ucsi_acpi.c @@ -197,6 +197,13 @@ static const struct dmi_system_id ucsi_acpi_quirks[] = { }, .driver_data = (void *)&ucsi_zenbook_ops, }, + { + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), + DMI_MATCH(DMI_PRODUCT_NAME, "VivoBook_ASUSLaptop"), + }, + .driver_data = (void *)&ucsi_zenbook_ops, + }, { .matches = { DMI_MATCH(DMI_SYS_VENDOR, "LG Electronics"),