From patchwork Wed Jul 31 12:43:39 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "gregkh@linuxfoundation.org" X-Patchwork-Id: 11067753 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1C0D014DB for ; Wed, 31 Jul 2019 12:44:02 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0962C2847B for ; Wed, 31 Jul 2019 12:44:02 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id F1B1428925; Wed, 31 Jul 2019 12:44:01 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 99D1E2847B for ; Wed, 31 Jul 2019 12:44:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727090AbfGaMn4 (ORCPT ); Wed, 31 Jul 2019 08:43:56 -0400 Received: from mail.kernel.org ([198.145.29.99]:36142 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726467AbfGaMn4 (ORCPT ); Wed, 31 Jul 2019 08:43:56 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.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 94935206B8; Wed, 31 Jul 2019 12:43:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1564577035; bh=qdKt8xMkWx3WVKyGM6p4kgZa2A5bUHnif0uObDGpacs=; h=From:To:Cc:Subject:Date:From; b=2PNMPi2HyAUo2pq0bnVlLzISd0g9zVsRAilNinPTip5E5cYDt4EuxnIXHElkwTvJH dPcH2fxP7sNNLV5xbJKld4HmAQXtZsA0TJ9OOL2zD56aMvLQcivlBKx2iiQgNAw2U7 SBbEoWYOMqoaclJc4+S40fQvW5IGe6rMUuYu8HzU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org, Richard Gong , Dmitry Torokhov Cc: Greg Kroah-Hartman , "H. Peter Anvin" , Andy Shevchenko , Andy Shevchenko , Bartlomiej Zolnierkiewicz , Borislav Petkov , Darren Hart , Florian Fainelli , Ingo Molnar , Sudeep Holla , Thomas Gleixner , Tony Prisk , dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-fbdev@vger.kernel.org, linux-input@vger.kernel.org, platform-driver-x86@vger.kernel.org, x86@kernel.org Subject: [PATCH v2 00/10] drivers, provide a way to add sysfs groups easily Date: Wed, 31 Jul 2019 14:43:39 +0200 Message-Id: <20190731124349.4474-1-gregkh@linuxfoundation.org> X-Mailer: git-send-email 2.22.0 MIME-Version: 1.0 Sender: linux-fbdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch originally started out just as a way for platform drivers to easily add a sysfs group in a race-free way, but thanks to Dmitry's patch, this series now is for all drivers in the kernel (hey, a unified driver model works!!!) I've only converted a few platform drivers here in this series to show how it works, but other busses can be converted after the first patch goes into the tree. Here's the original 00 message, for people to get an idea of what is going on here: If a platform driver wants to add a sysfs group, it has to do so in a racy way, adding it after the driver is bound. To resolve this issue, have the platform driver core do this for the driver, making the individual drivers logic smaller and simpler, and solving the race at the same time. All of these patches depend on the first patch. I'll take the first one through my driver-core tree, and any subsystem maintainer can either ack their individul patch and I will be glad to also merge it, or they can wait until after 5.4-rc1 when the core patch hits Linus's tree and then take it, it's up to them. Thank to Richard Gong for the idea and the testing of the platform driver patch and to Dmitry Torokhov for rewriting the first patch to work well for all busses. ----- V2 - work for all busses and not just platform drivers. Dmitry Torokhov (1): driver core: add dev_groups to all drivers Greg Kroah-Hartman (9): uio: uio_fsl_elbc_gpcm: convert platform driver to use dev_groups input: keyboard: gpio_keys: convert platform driver to use dev_groups input: axp20x-pek: convert platform driver to use dev_groups firmware: arm_scpi: convert platform driver to use dev_groups olpc: x01: convert platform driver to use dev_groups platform: x86: hp-wmi: convert platform driver to use dev_groups video: fbdev: wm8505fb: convert platform driver to use dev_groups video: fbdev: w100fb: convert platform driver to use dev_groups video: fbdev: sm501fb: convert platform driver to use dev_groups arch/x86/platform/olpc/olpc-xo1-sci.c | 17 ++++------ drivers/base/dd.c | 14 ++++++++ drivers/firmware/arm_scpi.c | 5 +-- drivers/input/keyboard/gpio_keys.c | 13 ++------ drivers/input/misc/axp20x-pek.c | 15 ++------- drivers/platform/x86/hp-wmi.c | 47 +++++++-------------------- drivers/uio/uio_fsl_elbc_gpcm.c | 23 +++++-------- drivers/video/fbdev/sm501fb.c | 37 +++++---------------- drivers/video/fbdev/w100fb.c | 23 ++++++------- drivers/video/fbdev/wm8505fb.c | 13 ++++---- include/linux/device.h | 3 ++ 11 files changed, 76 insertions(+), 134 deletions(-) Signed-off-by: Greg Kroah-Hartman