From patchwork Thu Oct 14 02:27:34 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Guzman Lugo, Fernando" X-Patchwork-Id: 251851 X-Patchwork-Delegate: hiroshi.doyu@nokia.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id o9E2Kf2l011278 for ; Thu, 14 Oct 2010 02:20:44 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754171Ab0JNCOW (ORCPT ); Wed, 13 Oct 2010 22:14:22 -0400 Received: from devils.ext.ti.com ([198.47.26.153]:53226 "EHLO devils.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752974Ab0JNCOW (ORCPT ); Wed, 13 Oct 2010 22:14:22 -0400 Received: from dlep33.itg.ti.com ([157.170.170.112]) by devils.ext.ti.com (8.13.7/8.13.7) with ESMTP id o9E2EH7X014849 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Wed, 13 Oct 2010 21:14:17 -0500 Received: from legion.dal.design.ti.com (localhost [127.0.0.1]) by dlep33.itg.ti.com (8.13.7/8.13.7) with ESMTP id o9E2EHIf017505; Wed, 13 Oct 2010 21:14:17 -0500 (CDT) Received: from localhost (x0095840-desktop.am.dhcp.ti.com [128.247.77.44]) by legion.dal.design.ti.com (8.11.7p1+Sun/8.11.7) with ESMTP id o9E2EGf13836; Wed, 13 Oct 2010 21:14:16 -0500 (CDT) From: Fernando Guzman Lugo To: Cc: , , , , , Fernando Guzman Lugo Subject: [PATCH 1/4] iovmm: no gap checking for fixed address Date: Wed, 13 Oct 2010 21:27:34 -0500 Message-Id: <1287023257-30951-2-git-send-email-x0095840@ti.com> X-Mailer: git-send-email 1.6.3.3 In-Reply-To: <1287023257-30951-1-git-send-email-x0095840@ti.com> References: <1287023257-30951-1-git-send-email-x0095840@ti.com> Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter1.kernel.org [140.211.167.41]); Thu, 14 Oct 2010 02:20:44 +0000 (UTC) diff --git a/arch/arm/plat-omap/iovmm.c b/arch/arm/plat-omap/iovmm.c index 24ca9c4..34f0012 100644 --- a/arch/arm/plat-omap/iovmm.c +++ b/arch/arm/plat-omap/iovmm.c @@ -289,7 +289,7 @@ static struct iovm_struct *alloc_iovm_area(struct iommu *obj, u32 da, prev_end = 0; list_for_each_entry(tmp, &obj->mmap, list) { - if (prev_end >= start) + if (prev_end > start) break; if (start + bytes <= tmp->da_start) @@ -301,7 +301,7 @@ static struct iovm_struct *alloc_iovm_area(struct iommu *obj, u32 da, prev_end = tmp->da_end; } - if ((start > prev_end) && (ULONG_MAX - start >= bytes)) + if ((start >= prev_end) && (ULONG_MAX - start + 1 >= bytes)) goto found; dev_dbg(obj->dev, "%s: no space to fit %08x(%x) flags: %08x\n",