From patchwork Thu Jun 10 19:34:21 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Russ Weight X-Patchwork-Id: 12313833 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 CF336C48BD1 for ; Thu, 10 Jun 2021 19:34:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BA74E61412 for ; Thu, 10 Jun 2021 19:34:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230470AbhFJTgd (ORCPT ); Thu, 10 Jun 2021 15:36:33 -0400 Received: from mga17.intel.com ([192.55.52.151]:36549 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230473AbhFJTgc (ORCPT ); Thu, 10 Jun 2021 15:36:32 -0400 IronPort-SDR: tezk3jccdMkNj8p62J7WfTSFVl5LP2L4kkvJpxtaFOH6WOieMZ3A+9styVHnvq2a2IaJTeiG+a cXkQN1e77+yg== X-IronPort-AV: E=McAfee;i="6200,9189,10011"; a="185756089" X-IronPort-AV: E=Sophos;i="5.83,264,1616482800"; d="scan'208";a="185756089" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Jun 2021 12:34:35 -0700 IronPort-SDR: H5gTCt/UoyNFFalt+WjxLnjWYDQx2G/zspNy3GLSJAi8/ikZ78HE8Dua0g30NSt+EFVP6PtmJX Bc0zlzkt9aXg== X-IronPort-AV: E=Sophos;i="5.83,264,1616482800"; d="scan'208";a="477458107" Received: from rhweight-mobl2.amr.corp.intel.com (HELO rhweight-mobl2.ra.intel.com) ([10.212.184.121]) by fmsmga003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Jun 2021 12:34:34 -0700 From: Russ Weight To: mdf@kernel.org, linux-fpga@vger.kernel.org Cc: trix@redhat.com, lgoncalv@redhat.com, yilun.xu@intel.com, hao.wu@intel.com, matthew.gerlach@intel.com, richard.gong@intel.com, Russ Weight Subject: [PATCH v3 7/8] fpga: bridge: Use standard dev_release for class driver Date: Thu, 10 Jun 2021 12:34:21 -0700 Message-Id: <20210610193422.286835-8-russell.h.weight@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210610193422.286835-1-russell.h.weight@intel.com> References: <20210610193422.286835-1-russell.h.weight@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org The FPGA bridge class driver data structure is being treated as a managed resource instead of using standard dev_release call-back to release the class data structure. This change populates the class.dev_release function and changes the fpga_bridge_free() function to call put_device(). It also changes fpga_bridge_unregister() to call device_del() instead of device_unregister(). Signed-off-by: Russ Weight Reviewed-by: Xu Yilun --- v3: - Added Reviewed-by tag v2: - Moved the renaming of "dev" to "parent" to a separate patch - Call fpga_bridge_free() in devm_fpga_bridge_release() instead of put_device() --- drivers/fpga/fpga-bridge.c | 28 ++++++++++++++-------------- 1 file changed, 14 insertions(+), 14 deletions(-) diff --git a/drivers/fpga/fpga-bridge.c b/drivers/fpga/fpga-bridge.c index 6c56afc66a6d..b40f4b4228e7 100644 --- a/drivers/fpga/fpga-bridge.c +++ b/drivers/fpga/fpga-bridge.c @@ -340,8 +340,10 @@ struct fpga_bridge *fpga_bridge_create(struct device *parent, const char *name, return NULL; id = ida_simple_get(&fpga_bridge_ida, 0, 0, GFP_KERNEL); - if (id < 0) - goto error_kfree; + if (id < 0) { + kfree(bridge); + return NULL; + } mutex_init(&bridge->mutex); INIT_LIST_HEAD(&bridge->node); @@ -358,17 +360,12 @@ struct fpga_bridge *fpga_bridge_create(struct device *parent, const char *name, bridge->dev.id = id; ret = dev_set_name(&bridge->dev, "br%d", id); - if (ret) - goto error_device; + if (ret) { + put_device(&bridge->dev); + return NULL; + } return bridge; - -error_device: - ida_simple_remove(&fpga_bridge_ida, id); -error_kfree: - kfree(bridge); - - return NULL; } EXPORT_SYMBOL_GPL(fpga_bridge_create); @@ -378,8 +375,7 @@ EXPORT_SYMBOL_GPL(fpga_bridge_create); */ void fpga_bridge_free(struct fpga_bridge *bridge) { - ida_simple_remove(&fpga_bridge_ida, bridge->dev.id); - kfree(bridge); + put_device(&bridge->dev); } EXPORT_SYMBOL_GPL(fpga_bridge_free); @@ -469,12 +465,16 @@ void fpga_bridge_unregister(struct fpga_bridge *bridge) if (bridge->br_ops && bridge->br_ops->fpga_bridge_remove) bridge->br_ops->fpga_bridge_remove(bridge); - device_unregister(&bridge->dev); + device_del(&bridge->dev); } EXPORT_SYMBOL_GPL(fpga_bridge_unregister); static void fpga_bridge_dev_release(struct device *dev) { + struct fpga_bridge *bridge = to_fpga_bridge(dev); + + ida_simple_remove(&fpga_bridge_ida, bridge->dev.id); + kfree(bridge); } static int __init fpga_bridge_dev_init(void)