From patchwork Tue Apr 13 21:24:37 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yinghai X-Patchwork-Id: 92271 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 o3DLS2Si010149 for ; Tue, 13 Apr 2010 21:28:02 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753999Ab0DMV1b (ORCPT ); Tue, 13 Apr 2010 17:27:31 -0400 Received: from acsinet12.oracle.com ([141.146.126.234]:40461 "EHLO acsinet12.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753997Ab0DMV1a (ORCPT ); Tue, 13 Apr 2010 17:27:30 -0400 Received: from rcsinet15.oracle.com (rcsinet15.oracle.com [148.87.113.117]) by acsinet12.oracle.com (Switch-3.4.2/Switch-3.4.2) with ESMTP id o3DLQO7w015596 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Tue, 13 Apr 2010 21:26:26 GMT Received: from acsmt353.oracle.com (acsmt353.oracle.com [141.146.40.153]) by rcsinet15.oracle.com (Switch-3.4.2/Switch-3.4.1) with ESMTP id o3D7pg2a016290; Tue, 13 Apr 2010 21:26:22 GMT Received: from abhmt016.oracle.com by acsmt355.oracle.com with ESMTP id 157914901271193953; Tue, 13 Apr 2010 14:25:53 -0700 Received: from [10.6.76.26] (/10.6.76.26) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Tue, 13 Apr 2010 14:25:52 -0700 Message-ID: <4BC4E115.90805@oracle.com> Date: Tue, 13 Apr 2010 14:24:37 -0700 From: Yinghai User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100317 SUSE/3.0.4-1.1.1 Thunderbird/3.0.4 MIME-Version: 1.0 To: "H. Peter Anvin" CC: Bjorn Helgaas , Thomas Gleixner , Ingo Molnar , Andy Isaacson , guenter.roeck@ericsson.com, Linus Torvalds , "linux-pci@vger.kernel.org" , "x86@kernel.org" , "linux-kernel@vger.kernel.org" , Thomas Renninger Subject: [PATCH -v3 3/3] pci: don't allocate from a BUSY bus resource References: <20100409223532.GC11130@hexapodia.org> <4BBFB1D8.6090802@oracle.com> <20100410000030.GE11130@hexapodia.org> <4BBFD019.9040405@oracle.com> <20100410014308.GG11130@hexapodia.org> <4BBFD8EF.6020108@oracle.com> <20100410015711.GH11130@hexapodia.org> <4BBFE66C.2040603@oracle.com> <20100412185416.GA19959@hexapodia.org> <4BC375D9.4040503@oracle.com> <20100412200224.GO11130@hexapodia.org> <4BC39F67.4090407@oracle.com> <1271192527.6035.44.camel@dc7800.home> <4BC4DD85.5030203@zytor.com> <4BC4DDEA.60202@oracle.com> <4BC4DFAD.9020600@zytor.com> In-Reply-To: <4BC4DFAD.9020600@zytor.com> X-Source-IP: acsmt353.oracle.com [141.146.40.153] X-Auth-Type: Internal IP X-CT-RefId: str=0001.0A090209.4BC4E180.0017:SCFMA4539814,ss=1,fgs=0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@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, 13 Apr 2010 21:28:14 +0000 (UTC) Index: linux-2.6/drivers/pci/bus.c =================================================================== --- linux-2.6.orig/drivers/pci/bus.c +++ linux-2.6/drivers/pci/bus.c @@ -103,6 +103,10 @@ pci_bus_alloc_resource(struct pci_bus *b if (!r) continue; + /* Driver can not reserve it later, so don't use it */ + if (r->flags & IORESOURCE_BUSY) + continue; + /* type_mask must match */ if ((res->flags ^ r->flags) & type_mask) continue;