From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754116Ab3BCB2z (ORCPT ); Sat, 2 Feb 2013 20:28:55 -0500 Received: from mail-pa0-f47.google.com ([209.85.220.47]:40489 "EHLO mail-pa0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753913Ab3BCBW3 (ORCPT ); Sat, 2 Feb 2013 20:22:29 -0500 From: Tejun Heo To: akpm@linux-foundation.org Cc: linux-kernel@vger.kernel.org, rusty@rustcorp.com.au, bfields@fieldses.org, skinsbursky@parallels.com, ebiederm@xmission.com, jmorris@namei.org, axboe@kernel.dk, Tejun Heo , Jason Wang , "Michael S. Tsirkin" Subject: [PATCH 38/62] i2c: convert to idr_alloc() Date: Sat, 2 Feb 2013 17:20:39 -0800 Message-Id: <1359854463-2538-39-git-send-email-tj@kernel.org> X-Mailer: git-send-email 1.8.1 In-Reply-To: <1359854463-2538-1-git-send-email-tj@kernel.org> References: <1359854463-2538-1-git-send-email-tj@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Convert to the much saner new idr interface. Only compile tested. Signed-off-by: Tejun Heo Cc: Jason Wang Cc: Michael S. Tsirkin --- This patch depends on an earlier idr changes and I think it would be best to route these together through -mm. Please holler if there's any objection. Thanks. drivers/net/macvtap.c | 21 +++++---------------- 1 file changed, 5 insertions(+), 16 deletions(-) diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c index 0f0f9ce..2497f6f 100644 --- a/drivers/net/macvtap.c +++ b/drivers/net/macvtap.c @@ -279,28 +279,17 @@ static int macvtap_receive(struct sk_buff *skb) static int macvtap_get_minor(struct macvlan_dev *vlan) { int retval = -ENOMEM; - int id; mutex_lock(&minor_lock); - if (idr_pre_get(&minor_idr, GFP_KERNEL) == 0) - goto exit; - - retval = idr_get_new_above(&minor_idr, vlan, 1, &id); - if (retval < 0) { - if (retval == -EAGAIN) - retval = -ENOMEM; - goto exit; - } - if (id < MACVTAP_NUM_DEVS) { - vlan->minor = id; - } else { + retval = idr_alloc(&minor_idr, vlan, 1, MACVTAP_NUM_DEVS, GFP_KERNEL); + if (retval >= 0) { + vlan->minor = retval; + } else if (retval == -ENOSPC) { printk(KERN_ERR "too many macvtap devices\n"); retval = -EINVAL; - idr_remove(&minor_idr, id); } -exit: mutex_unlock(&minor_lock); - return retval; + return retval < 0 ? retval : 0; } static void macvtap_free_minor(struct macvlan_dev *vlan) -- 1.8.1