From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 13399C43444 for ; Fri, 18 Jan 2019 08:57:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D7FBC20883 for ; Fri, 18 Jan 2019 08:57:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1547801823; bh=tvqOjvEV7Fye2DhiLZ4Ed/11ymRlwaEJZcdcNG7vyWA=; h=Subject:To:From:Date:List-ID:From; b=YlW+bueYcPlIOnaMJ8/4d/3ElcGOu/tKwIc14Peps7PhUQC3uS8nUI5iwFPhGLUUX 0YlEjJzLoQzd4o44SJQS4/LSenfXBNBuGIutDEB+3eFsqlF5i4r3wMAH95Cry98Wqi maGPcdFxxQ+g/PQEyyR76sn4DxX9oc4Yjmc5fp7U= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726461AbfARI5C (ORCPT ); Fri, 18 Jan 2019 03:57:02 -0500 Received: from mail.kernel.org ([198.145.29.99]:53684 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725784AbfARI5C (ORCPT ); Fri, 18 Jan 2019 03:57:02 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 9D00320855; Fri, 18 Jan 2019 08:57:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1547801821; bh=tvqOjvEV7Fye2DhiLZ4Ed/11ymRlwaEJZcdcNG7vyWA=; h=Subject:To:From:Date:From; b=VXmFdHFF9q5FnfHzIsB2wVvzj9PT118oiIfrm8rLLxkyDD+JelhPz5D8NzYkZzU74 QF266UdVPkNITHF4rMfnhw7mT0NuiN9UuknHLPk6RO3WbfqYIWtxV9ZP+uYjoHW1t3 Zn3NcL7c6wTT0KsUMzpWVcP6T+dReT84rgZp6QJU= Subject: patch "USB: leds: fix regression in usbport led trigger" added to usb-linus To: chunkeey@gmail.com, gregkh@linuxfoundation.org, jacek.anaszewski@gmail.com, stable@vger.kernel.org From: Date: Fri, 18 Jan 2019 09:56:58 +0100 Message-ID: <1547801818138236@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org This is a note to let you know that I've just added the patch titled USB: leds: fix regression in usbport led trigger to my usb git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git in the usb-linus branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will hopefully also be merged in Linus's tree for the next -rc kernel release. If you have any questions about this process, please let me know. >From 91f7d2e89868fcac0e750a28230fdb1ad4512137 Mon Sep 17 00:00:00 2001 From: Christian Lamparter Date: Fri, 11 Jan 2019 17:29:45 +0100 Subject: USB: leds: fix regression in usbport led trigger The patch "usb: simplify usbport trigger" together with "leds: triggers: add device attribute support" caused an regression for the usbport trigger. it will no longer enumerate any active usb hub ports under the "ports" directory in the sysfs class directory, if the usb host drivers are fully initialized before the usbport trigger was loaded. The reason is that the usbport driver tries to register the sysfs entries during the activate() callback. And this will fail with -2 / ENOENT because the patch "leds: triggers: add device attribute support" made it so that the sysfs "ports" group was only being added after the activate() callback succeeded. This version of the patch reverts parts of the "usb: simplify usbport trigger" patch and restores usbport trigger's functionality. Fixes: 6f7b0bad8839 ("usb: simplify usbport trigger") Signed-off-by: Christian Lamparter Cc: stable Acked-by: Jacek Anaszewski Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/ledtrig-usbport.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/drivers/usb/core/ledtrig-usbport.c b/drivers/usb/core/ledtrig-usbport.c index dc7f7fd71684..c12ac56606c3 100644 --- a/drivers/usb/core/ledtrig-usbport.c +++ b/drivers/usb/core/ledtrig-usbport.c @@ -119,11 +119,6 @@ static const struct attribute_group ports_group = { .attrs = ports_attrs, }; -static const struct attribute_group *ports_groups[] = { - &ports_group, - NULL -}; - /*************************************** * Adding & removing ports ***************************************/ @@ -307,6 +302,7 @@ static int usbport_trig_notify(struct notifier_block *nb, unsigned long action, static int usbport_trig_activate(struct led_classdev *led_cdev) { struct usbport_trig_data *usbport_data; + int err; usbport_data = kzalloc(sizeof(*usbport_data), GFP_KERNEL); if (!usbport_data) @@ -315,6 +311,9 @@ static int usbport_trig_activate(struct led_classdev *led_cdev) /* List of ports */ INIT_LIST_HEAD(&usbport_data->ports); + err = sysfs_create_group(&led_cdev->dev->kobj, &ports_group); + if (err) + goto err_free; usb_for_each_dev(usbport_data, usbport_trig_add_usb_dev_ports); usbport_trig_update_count(usbport_data); @@ -322,8 +321,11 @@ static int usbport_trig_activate(struct led_classdev *led_cdev) usbport_data->nb.notifier_call = usbport_trig_notify; led_set_trigger_data(led_cdev, usbport_data); usb_register_notify(&usbport_data->nb); - return 0; + +err_free: + kfree(usbport_data); + return err; } static void usbport_trig_deactivate(struct led_classdev *led_cdev) @@ -335,6 +337,8 @@ static void usbport_trig_deactivate(struct led_classdev *led_cdev) usbport_trig_remove_port(usbport_data, port); } + sysfs_remove_group(&led_cdev->dev->kobj, &ports_group); + usb_unregister_notify(&usbport_data->nb); kfree(usbport_data); @@ -344,7 +348,6 @@ static struct led_trigger usbport_led_trigger = { .name = "usbport", .activate = usbport_trig_activate, .deactivate = usbport_trig_deactivate, - .groups = ports_groups, }; static int __init usbport_trig_init(void) -- 2.20.1