From patchwork Sun Oct 8 09:54:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 13412672 X-Patchwork-Delegate: jikos@jikos.cz 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 98A7FE95A8E for ; Sun, 8 Oct 2023 09:55:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344586AbjJHJzw (ORCPT ); Sun, 8 Oct 2023 05:55:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40432 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344569AbjJHJzv (ORCPT ); Sun, 8 Oct 2023 05:55:51 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B6E05C5 for ; Sun, 8 Oct 2023 02:55:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1696758908; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=iiZJPTeCOBMQkn0nOhKSU0XyqdnlUqKu4LlFA7D/2NA=; b=a8ASCYZ9YUMP1ITnSs+TGuO/Uk3R1uwJh30OIkOpvTiJ5ONqodofuR+luTBlR6OlwJ2iK5 ba4N18+dksGUGV5snT0ST1VeFnhW1I9q7Mz229DrrPrkhCspUYCPlAMfVGg675QsITlnI6 WIwD+Cv0QDrr4CN08A0XSqymOLTIqaI= Received: from mimecast-mx02.redhat.com (mx-ext.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-50-TdWQR5FeOye-K8I6rFBtxA-1; Sun, 08 Oct 2023 05:55:01 -0400 X-MC-Unique: TdWQR5FeOye-K8I6rFBtxA-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.rdu2.redhat.com [10.11.54.8]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id E556429AA2F0; Sun, 8 Oct 2023 09:55:00 +0000 (UTC) Received: from shalem.redhat.com (unknown [10.39.192.74]) by smtp.corp.redhat.com (Postfix) with ESMTP id 0A8BCC15BB8; Sun, 8 Oct 2023 09:54:59 +0000 (UTC) From: Hans de Goede To: =?utf-8?q?Filipe_La=C3=ADns?= , Bastien Nocera , Jiri Kosina , Benjamin Tissoires Cc: Hans de Goede , linux-input@vger.kernel.org Subject: [PATCH v2 01/14] HID: logitech-hidpp: Revert "Don't restart communication if not necessary" Date: Sun, 8 Oct 2023 11:54:44 +0200 Message-ID: <20231008095458.8926-2-hdegoede@redhat.com> In-Reply-To: <20231008095458.8926-1-hdegoede@redhat.com> References: <20231008095458.8926-1-hdegoede@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.8 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org Commit 91cf9a98ae41 ("HID: logitech-hidpp: make .probe usbhid capable") makes hidpp_probe() first call hid_hw_start(hdev, 0) to allow IO without connecting any hid subdrivers (hid-input, hidraw). This is done to allow to retrieve the device's name and serial number and store these in hdev->name and hdev->uniq. Then later on IO is stopped and started again with hid_hw_start(hdev, HID_CONNECT_DEFAULT) connecting hid-input and hidraw after the name and serial number have been setup. Commit 498ba2069035 ("HID: logitech-hidpp: Don't restart communication if not necessary") changed the probe() code to only do the start with a 0 connect-mask + restart later for unifying devices. But for non unifying devices hdev->name and hdev->uniq are updated too. So this change re-introduces the problem for which the start with a 0 connect-mask + restart later behavior was introduced. Revert the change to limit the restart behavior to unifying devices to fix hdev->name changing after userspace facing devices have already been registered. Fixes: 498ba2069035 ("HID: logitech-hidpp: Don't restart communication if not necessary") Cc: Bastien Nocera Signed-off-by: Hans de Goede --- drivers/hid/hid-logitech-hidpp.c | 32 ++++++++++++-------------------- 1 file changed, 12 insertions(+), 20 deletions(-) diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c index a209d51bd247..09f7723eaabe 100644 --- a/drivers/hid/hid-logitech-hidpp.c +++ b/drivers/hid/hid-logitech-hidpp.c @@ -4394,7 +4394,6 @@ static int hidpp_probe(struct hid_device *hdev, const struct hid_device_id *id) bool connected; unsigned int connect_mask = HID_CONNECT_DEFAULT; struct hidpp_ff_private_data data; - bool will_restart = false; /* report_fixup needs drvdata to be set before we call hid_parse */ hidpp = devm_kzalloc(&hdev->dev, sizeof(*hidpp), GFP_KERNEL); @@ -4445,10 +4444,6 @@ static int hidpp_probe(struct hid_device *hdev, const struct hid_device_id *id) return ret; } - if (hidpp->quirks & HIDPP_QUIRK_DELAYED_INIT || - hidpp->quirks & HIDPP_QUIRK_UNIFYING) - will_restart = true; - INIT_WORK(&hidpp->work, delayed_work_cb); mutex_init(&hidpp->send_mutex); init_waitqueue_head(&hidpp->wait); @@ -4463,7 +4458,7 @@ static int hidpp_probe(struct hid_device *hdev, const struct hid_device_id *id) * Plain USB connections need to actually call start and open * on the transport driver to allow incoming data. */ - ret = hid_hw_start(hdev, will_restart ? 0 : connect_mask); + ret = hid_hw_start(hdev, 0); if (ret) { hid_err(hdev, "hw start failed\n"); goto hid_hw_start_fail; @@ -4502,7 +4497,6 @@ static int hidpp_probe(struct hid_device *hdev, const struct hid_device_id *id) hidpp->wireless_feature_index = 0; else if (ret) goto hid_hw_init_fail; - ret = 0; } if (connected && (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP)) { @@ -4518,21 +4512,19 @@ static int hidpp_probe(struct hid_device *hdev, const struct hid_device_id *id) schedule_work(&hidpp->work); flush_work(&hidpp->work); - if (will_restart) { - /* Reset the HID node state */ - hid_device_io_stop(hdev); - hid_hw_close(hdev); - hid_hw_stop(hdev); + /* Reset the HID node state */ + hid_device_io_stop(hdev); + hid_hw_close(hdev); + hid_hw_stop(hdev); - if (hidpp->quirks & HIDPP_QUIRK_DELAYED_INIT) - connect_mask &= ~HID_CONNECT_HIDINPUT; + if (hidpp->quirks & HIDPP_QUIRK_DELAYED_INIT) + connect_mask &= ~HID_CONNECT_HIDINPUT; - /* Now export the actual inputs and hidraw nodes to the world */ - ret = hid_hw_start(hdev, connect_mask); - if (ret) { - hid_err(hdev, "%s:hid_hw_start returned error\n", __func__); - goto hid_hw_start_fail; - } + /* Now export the actual inputs and hidraw nodes to the world */ + ret = hid_hw_start(hdev, connect_mask); + if (ret) { + hid_err(hdev, "%s:hid_hw_start returned error\n", __func__); + goto hid_hw_start_fail; } if (hidpp->quirks & HIDPP_QUIRK_CLASS_G920) {