Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932284Ab0BBTJF (ORCPT ); Tue, 2 Feb 2010 14:09:05 -0500 Received: from g4t0016.houston.hp.com ([15.201.24.19]:43237 "EHLO g4t0016.houston.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932226Ab0BBTI4 (ORCPT ); Tue, 2 Feb 2010 14:08:56 -0500 Subject: [PATCH v2 14/18] IB/ucm: use stack variable 'devnum' in ib_ucm_add_one 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 12:08:55 -0700 Message-ID: <20100202190855.28217.68785.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 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1942 Lines: 59 This change is not useful by itself, but sets us up for a future change that allows us to dynamically allocate device numbers in case we have more than IB_UCM_MAX_DEVICES in the system. Signed-off-by: Alex Chiang --- drivers/infiniband/core/ucm.c | 12 +++++++----- 1 files changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/infiniband/core/ucm.c b/drivers/infiniband/core/ucm.c index f504c9b..7ff3300 100644 --- a/drivers/infiniband/core/ucm.c +++ b/drivers/infiniband/core/ucm.c @@ -1239,6 +1239,7 @@ static DEVICE_ATTR(ibdev, S_IRUGO, show_ibdev, NULL); static void ib_ucm_add_one(struct ib_device *device) { + int devnum; struct ib_ucm_device *ucm_dev; if (!device->alloc_ucontext || @@ -1251,16 +1252,17 @@ static void ib_ucm_add_one(struct ib_device *device) ucm_dev->ib_dev = device; - ucm_dev->devnum = find_first_zero_bit(dev_map, IB_UCM_MAX_DEVICES); - if (ucm_dev->devnum >= IB_UCM_MAX_DEVICES) + devnum = find_first_zero_bit(dev_map, IB_UCM_MAX_DEVICES); + if (devnum >= IB_UCM_MAX_DEVICES) goto err; - set_bit(ucm_dev->devnum, dev_map); + ucm_dev->devnum = devnum; + set_bit(devnum, dev_map); cdev_init(&ucm_dev->cdev, &ucm_fops); ucm_dev->cdev.owner = THIS_MODULE; kobject_set_name(&ucm_dev->cdev.kobj, "ucm%d", ucm_dev->devnum); - if (cdev_add(&ucm_dev->cdev, IB_UCM_BASE_DEV + ucm_dev->devnum, 1)) + if (cdev_add(&ucm_dev->cdev, IB_UCM_BASE_DEV + devnum, 1)) goto err; ucm_dev->dev.class = &cm_class; @@ -1281,7 +1283,7 @@ err_dev: device_unregister(&ucm_dev->dev); err_cdev: cdev_del(&ucm_dev->cdev); - clear_bit(ucm_dev->devnum, dev_map); + clear_bit(devnum, dev_map); err: kfree(ucm_dev); return; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/