From patchwork Mon Oct 4 21:02:15 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: 230621 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 o94Koxg3002092 for ; Mon, 4 Oct 2010 20:51:00 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757323Ab0JDUtG (ORCPT ); Mon, 4 Oct 2010 16:49:06 -0400 Received: from arroyo.ext.ti.com ([192.94.94.40]:56535 "EHLO arroyo.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757158Ab0JDUtE (ORCPT ); Mon, 4 Oct 2010 16:49:04 -0400 Received: from dlep33.itg.ti.com ([157.170.170.112]) by arroyo.ext.ti.com (8.13.7/8.13.7) with ESMTP id o94KmvwO007342 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 4 Oct 2010 15:48:57 -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 o94KmufR001564; Mon, 4 Oct 2010 15:48:57 -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 o94Kmuf16623; Mon, 4 Oct 2010 15:48:56 -0500 (CDT) From: Fernando Guzman Lugo To: , Cc: , , , , , Fernando Guzman Lugo Subject: [PATCHv2 1/3] iovmm: no gap checking for fixed address Date: Mon, 4 Oct 2010 16:02:15 -0500 Message-Id: <1286226137-1233-2-git-send-email-x0095840@ti.com> X-Mailer: git-send-email 1.6.3.3 In-Reply-To: <1286226137-1233-1-git-send-email-x0095840@ti.com> References: <1286226137-1233-1-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]); Mon, 04 Oct 2010 20:51:00 +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",