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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 852FFC433FE for ; Sun, 27 Feb 2022 13:53:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230365AbiB0Nxk (ORCPT ); Sun, 27 Feb 2022 08:53:40 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38840 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231301AbiB0Nxa (ORCPT ); Sun, 27 Feb 2022 08:53:30 -0500 Received: from smtp-relay-internal-0.canonical.com (smtp-relay-internal-0.canonical.com [185.125.188.122]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3979913F07 for ; Sun, 27 Feb 2022 05:52:52 -0800 (PST) Received: from mail-ed1-f72.google.com (mail-ed1-f72.google.com [209.85.208.72]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by smtp-relay-internal-0.canonical.com (Postfix) with ESMTPS id 71CAF407BE for ; Sun, 27 Feb 2022 13:52:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=canonical.com; s=20210705; t=1645969956; bh=lHEHPtP6JAM6zCrRNeDTlRy/WZxSvWGZvNHgREr2xAI=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=YYmIWvVBd8hAFKEneAPLXYvqJ9NoKRtnpMxIJ4oseziHn09PwdtEiJRJyI+P9Yknh W2UrUeff0ISfpOfG29569jJj9VDkChvoelDDft8fYyiE/Qxi66iLAixpG9N04i6OUS cpydPFLqqM3pxbCqHvpbxA+8AVrTTNLEU/mijOBNLynWTL7OxZwkm6O2O810isJSBf Wn/dXwCQXE6MwQVqRhoi/+VVDSaV5FEUYStscR+XXN9UWqwIKLRrJSf8fKWOTiJIap 1jKdwB8teRK+RzFlg46MP7VeK/htTvC+N3j/1gQ4CU79Qf/khV8EeJ3sKbWaTI5kqk p2IYti553vjvw== Received: by mail-ed1-f72.google.com with SMTP id l14-20020aa7cace000000b003f7f8e1cbbdso4234712edt.20 for ; Sun, 27 Feb 2022 05:52:36 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=lHEHPtP6JAM6zCrRNeDTlRy/WZxSvWGZvNHgREr2xAI=; b=xJ1UQo3QZCZSgctvNwKaitDuxJTkMN8ahhQgG5UmEmVwZhqfMdRDD2Kl1gRuh5kysy 2R0S3kG8x/CIZ5styrWIhKuf/gXWbn25YslWdJkR0kS42NX8Y/ZLhuiDX/mQHZ0PteMI 8DNFHY3e5R2kHSBj3BlYqqIZycYJb0nIOgEucJ+Mpr+ctkcLJB0CKs0CpCzKMUB+ULVE 4WLEM2/iB9pIr3sxEY9/WZSl13fOLkf9HuFwoG5A5JuBXkCmNIy5cbz676vU0fAzO0TU gdeA/meh2g2WHMXcTjHFJWAqOOc9UABDjbx1JDDCsiu7bgypEuVruYLlOIG7+oFo9VAO 0yPQ== X-Gm-Message-State: AOAM5338AJ9EwS1PXyojAj/wMrjsq2ke6SehrpbsIts7LLB6J5VZUe/l sI3ZyO9lIlfSdMzOT5CYAIkLtyzqvi0VuMGezx5/Q/hJ4eUxzIhwgEw+zDn5BAJet+Kk7fV43D/ 7YHLPMKnO1HzKkGhoeX/w6kv/RyEELxYMJzbuWw== X-Received: by 2002:a17:906:d10c:b0:6cd:4aa2:cd62 with SMTP id b12-20020a170906d10c00b006cd4aa2cd62mr12751226ejz.229.1645969956024; Sun, 27 Feb 2022 05:52:36 -0800 (PST) X-Google-Smtp-Source: ABdhPJyXq+ZARVgwx9GQqR/xqmr4FidvI0jbXs/SPWVteyhvLCXz3Udlc0TuaU2TzyIf2JoyZYkY6w== X-Received: by 2002:a17:906:d10c:b0:6cd:4aa2:cd62 with SMTP id b12-20020a170906d10c00b006cd4aa2cd62mr12751178ejz.229.1645969955744; Sun, 27 Feb 2022 05:52:35 -0800 (PST) Received: from localhost.localdomain (xdsl-188-155-181-108.adslplus.ch. [188.155.181.108]) by smtp.gmail.com with ESMTPSA id r22-20020a17090638d600b006d584aaa9c9sm3393333ejd.133.2022.02.27.05.52.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 27 Feb 2022 05:52:35 -0800 (PST) From: Krzysztof Kozlowski To: Greg Kroah-Hartman , "Rafael J. Wysocki" , Stuart Yoder , Laurentiu Tudor , Abel Vesa , Shawn Guo , Sascha Hauer , Fabio Estevam , "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger , Wei Liu , Dexuan Cui , Bjorn Helgaas , Bjorn Andersson , Mathieu Poirier , Vineeth Vijayan , Peter Oberparleiter , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Andy Gross , Srinivas Kandagatla , Mark Brown , "Michael S. Tsirkin" , Jason Wang , linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, NXP Linux Team , linux-arm-kernel@lists.infradead.org, linux-hyperv@vger.kernel.org, linux-pci@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-s390@vger.kernel.org, linux-arm-msm@vger.kernel.org, alsa-devel@alsa-project.org, linux-spi@vger.kernel.org, virtualization@lists.linux-foundation.org, Linus Torvalds Cc: Rasmus Villemoes , Krzysztof Kozlowski Subject: [PATCH v3 03/11] fsl-mc: Use driver_set_override() instead of open-coding Date: Sun, 27 Feb 2022 14:52:06 +0100 Message-Id: <20220227135214.145599-4-krzysztof.kozlowski@canonical.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220227135214.145599-1-krzysztof.kozlowski@canonical.com> References: <20220227135214.145599-1-krzysztof.kozlowski@canonical.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Use a helper for seting driver_override to reduce amount of duplicated code. Make the driver_override field const char, because it is not modified by the core and it matches other subsystems. Signed-off-by: Krzysztof Kozlowski --- drivers/bus/fsl-mc/fsl-mc-bus.c | 25 ++++--------------------- include/linux/fsl/mc.h | 6 ++++-- 2 files changed, 8 insertions(+), 23 deletions(-) diff --git a/drivers/bus/fsl-mc/fsl-mc-bus.c b/drivers/bus/fsl-mc/fsl-mc-bus.c index 8fd4a356a86e..ba01c7f4de92 100644 --- a/drivers/bus/fsl-mc/fsl-mc-bus.c +++ b/drivers/bus/fsl-mc/fsl-mc-bus.c @@ -166,31 +166,14 @@ static ssize_t driver_override_store(struct device *dev, const char *buf, size_t count) { struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev); - char *driver_override, *old = mc_dev->driver_override; - char *cp; + int ret; if (WARN_ON(dev->bus != &fsl_mc_bus_type)) return -EINVAL; - if (count >= (PAGE_SIZE - 1)) - return -EINVAL; - - driver_override = kstrndup(buf, count, GFP_KERNEL); - if (!driver_override) - return -ENOMEM; - - cp = strchr(driver_override, '\n'); - if (cp) - *cp = '\0'; - - if (strlen(driver_override)) { - mc_dev->driver_override = driver_override; - } else { - kfree(driver_override); - mc_dev->driver_override = NULL; - } - - kfree(old); + ret = driver_set_override(dev, &mc_dev->driver_override, buf, count); + if (ret) + return ret; return count; } diff --git a/include/linux/fsl/mc.h b/include/linux/fsl/mc.h index 7b6c42bfb660..7a87ab9eba99 100644 --- a/include/linux/fsl/mc.h +++ b/include/linux/fsl/mc.h @@ -170,7 +170,9 @@ struct fsl_mc_obj_desc { * @regions: pointer to array of MMIO region entries * @irqs: pointer to array of pointers to interrupts allocated to this device * @resource: generic resource associated with this MC object device, if any. - * @driver_override: driver name to force a match + * @driver_override: driver name to force a match; do not set directly, + * because core frees it; use driver_set_override() to + * set or clear it. * * Generic device object for MC object devices that are "attached" to a * MC bus. @@ -204,7 +206,7 @@ struct fsl_mc_device { struct fsl_mc_device_irq **irqs; struct fsl_mc_resource *resource; struct device_link *consumer_link; - char *driver_override; + const char *driver_override; }; #define to_fsl_mc_device(_dev) \ -- 2.32.0