From patchwork Wed Oct 2 10:49:01 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Gordeev X-Patchwork-Id: 2976031 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: X-Original-To: patchwork-linux-pci@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 2E1EEBFF0B for ; Wed, 2 Oct 2013 16:41:28 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A011920274 for ; Wed, 2 Oct 2013 16:41:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1390D2010F for ; Wed, 2 Oct 2013 16:41:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754212Ab3JBQlR (ORCPT ); Wed, 2 Oct 2013 12:41:17 -0400 Received: from 221-186-24-89.in-addr.arpa ([89.24.186.221]:24722 "EHLO dhcp-26-207.brq.redhat.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1754126Ab3JBQlP (ORCPT ); Wed, 2 Oct 2013 12:41:15 -0400 Received: from dhcp-26-207.brq.redhat.com (localhost [127.0.0.1]) by dhcp-26-207.brq.redhat.com (8.14.5/8.14.5) with ESMTP id r92AvlQa002635; Wed, 2 Oct 2013 12:57:47 +0200 Received: (from agordeev@localhost) by dhcp-26-207.brq.redhat.com (8.14.5/8.14.5/Submit) id r92AvjWB002634; Wed, 2 Oct 2013 12:57:45 +0200 From: Alexander Gordeev To: linux-kernel@vger.kernel.org Cc: Alexander Gordeev , Bjorn Helgaas , Ralf Baechle , Michael Ellerman , Benjamin Herrenschmidt , Martin Schwidefsky , Ingo Molnar , Tejun Heo , Dan Williams , Andy King , Jon Mason , Matt Porter , linux-pci@vger.kernel.org, linux-mips@linux-mips.org, linuxppc-dev@lists.ozlabs.org, linux390@de.ibm.com, linux-s390@vger.kernel.org, x86@kernel.org, linux-ide@vger.kernel.org, iss_storagedev@hp.com, linux-nvme@lists.infradead.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, e1000-devel@lists.sourceforge.net, linux-driver@qlogic.com, Solarflare linux maintainers , "VMware, Inc." , linux-scsi@vger.kernel.org Subject: [PATCH RFC 45/77] megaraid: Update MSI/MSI-X interrupts enablement code Date: Wed, 2 Oct 2013 12:49:01 +0200 Message-Id: <9c28bb824f403b6418840970f2a3b63d9fa9d924.1380703263.git.agordeev@redhat.com> X-Mailer: git-send-email 1.7.7.6 In-Reply-To: References: Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00,KHOP_BIG_TO_CC, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP As result of recent re-design of the MSI/MSI-X interrupts enabling pattern this driver has to be updated to use the new technique to obtain a optimal number of MSI/MSI-X interrupts required. Signed-off-by: Alexander Gordeev --- drivers/scsi/megaraid/megaraid_sas_base.c | 20 +++++++++----------- 1 files changed, 9 insertions(+), 11 deletions(-) diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c index 3020921..b5973e4 100644 --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -3727,18 +3727,16 @@ static int megasas_init_fw(struct megasas_instance *instance) (unsigned int)num_online_cpus()); for (i = 0; i < instance->msix_vectors; i++) instance->msixentry[i].entry = i; - i = pci_enable_msix(instance->pdev, instance->msixentry, - instance->msix_vectors); - if (i >= 0) { - if (i) { - if (!pci_enable_msix(instance->pdev, - instance->msixentry, i)) - instance->msix_vectors = i; - else - instance->msix_vectors = 0; - } - } else + i = pci_msix_table_size(instance->pdev); + if (i < 0) { instance->msix_vectors = 0; + } else { + if (!pci_enable_msix(instance->pdev, + instance->msixentry, i)) + instance->msix_vectors = i; + else + instance->msix_vectors = 0; + } dev_info(&instance->pdev->dev, "[scsi%d]: FW supports" "<%d> MSIX vector,Online CPUs: <%d>,"