From patchwork Tue Feb 2 19:08:35 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Chiang X-Patchwork-Id: 76482 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter.kernel.org (8.14.3/8.14.3) with ESMTP id o12JBwju002136 for ; Tue, 2 Feb 2010 19:11:59 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932228Ab0BBTIo (ORCPT ); Tue, 2 Feb 2010 14:08:44 -0500 Received: from g4t0017.houston.hp.com ([15.201.24.20]:16751 "EHLO g4t0017.houston.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932241Ab0BBTIf (ORCPT ); Tue, 2 Feb 2010 14:08:35 -0500 Received: from g4t0018.houston.hp.com (g4t0018.houston.hp.com [16.234.32.27]) by g4t0017.houston.hp.com (Postfix) with ESMTP id A545938543; Tue, 2 Feb 2010 19:08:35 +0000 (UTC) Received: from ldl (ldl.fc.hp.com [15.11.146.30]) by g4t0018.houston.hp.com (Postfix) with ESMTP id 8413D1005D; Tue, 2 Feb 2010 19:08:35 +0000 (UTC) Received: from localhost (ldl.fc.hp.com [127.0.0.1]) by ldl (Postfix) with ESMTP id 6F532CF000A; Tue, 2 Feb 2010 12:08:35 -0700 (MST) Received: from ldl ([127.0.0.1]) by localhost (ldl.fc.hp.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id EL6dFPewO9U6; Tue, 2 Feb 2010 12:08:35 -0700 (MST) Received: from eh.fc.hp.com (eh.fc.hp.com [15.11.146.105]) by ldl (Postfix) with ESMTP id 5AE1CCF0007; Tue, 2 Feb 2010 12:08:35 -0700 (MST) Received: from bob.kio (localhost [127.0.0.1]) by eh.fc.hp.com (Postfix) with ESMTP id 4B068261D3; Tue, 2 Feb 2010 12:08:35 -0700 (MST) Subject: [PATCH v2 10/18] IB/umad: use stack variable 'devnum' in ib_umad_init_port To: rdreier@cisco.com From: Alex Chiang Cc: linux-rdma@vger.kernel.org, justin.chen@hp.com, linux-kernel@vger.kernel.org Date: Tue, 02 Feb 2010 12:08:35 -0700 Message-ID: <20100202190835.28217.25180.stgit@bob.kio> In-Reply-To: <20100202185235.28217.64521.stgit@bob.kio> References: <20100202185235.28217.64521.stgit@bob.kio> User-Agent: StGit/0.15 MIME-Version: 1.0 Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter.kernel.org [140.211.167.41]); Tue, 02 Feb 2010 19:11:59 +0000 (UTC) diff --git a/drivers/infiniband/core/user_mad.c b/drivers/infiniband/core/user_mad.c index 46c8879..df403ec 100644 --- a/drivers/infiniband/core/user_mad.c +++ b/drivers/infiniband/core/user_mad.c @@ -974,13 +974,16 @@ static CLASS_ATTR(abi_version, S_IRUGO, show_abi_version, NULL); static int ib_umad_init_port(struct ib_device *device, int port_num, struct ib_umad_port *port) { + int devnum; + spin_lock(&port_lock); - port->dev_num = find_first_zero_bit(dev_map, IB_UMAD_MAX_PORTS); - if (port->dev_num >= IB_UMAD_MAX_PORTS) { + devnum = find_first_zero_bit(dev_map, IB_UMAD_MAX_PORTS); + if (devnum >= IB_UMAD_MAX_PORTS) { spin_unlock(&port_lock); return -1; } - set_bit(port->dev_num, dev_map); + port->dev_num = devnum; + set_bit(devnum, dev_map); spin_unlock(&port_lock); port->ib_dev = device; @@ -992,7 +995,7 @@ static int ib_umad_init_port(struct ib_device *device, int port_num, cdev_init(&port->cdev, &umad_fops); port->cdev.owner = THIS_MODULE; kobject_set_name(&port->cdev.kobj, "umad%d", port->dev_num); - if (cdev_add(&port->cdev, base_dev + port->dev_num, 1)) + if (cdev_add(&port->cdev, base_dev + devnum, 1)) goto err_cdev; port->dev = device_create(umad_class, device->dma_device, @@ -1009,7 +1012,7 @@ static int ib_umad_init_port(struct ib_device *device, int port_num, cdev_init(&port->sm_cdev, &umad_sm_fops); port->sm_cdev.owner = THIS_MODULE; kobject_set_name(&port->sm_cdev.kobj, "issm%d", port->dev_num); - if (cdev_add(&port->sm_cdev, base_dev + port->dev_num + IB_UMAD_MAX_PORTS, 1)) + if (cdev_add(&port->sm_cdev, base_dev + devnum + IB_UMAD_MAX_PORTS, 1)) goto err_sm_cdev; port->sm_dev = device_create(umad_class, device->dma_device, @@ -1036,7 +1039,7 @@ err_dev: err_cdev: cdev_del(&port->cdev); - clear_bit(port->dev_num, dev_map); + clear_bit(devnum, dev_map); return -1; }