From patchwork Wed Oct 2 10:48:32 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Gordeev X-Patchwork-Id: 2976191 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 075FDBFF0B for ; Wed, 2 Oct 2013 16:48:08 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id EA26C20458 for ; Wed, 2 Oct 2013 16:48:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CFCAF20190 for ; Wed, 2 Oct 2013 16:48:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754599Ab3JBQrp (ORCPT ); Wed, 2 Oct 2013 12:47:45 -0400 Received: from 221-186-24-89.in-addr.arpa ([89.24.186.221]:24804 "EHLO dhcp-26-207.brq.redhat.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1754199Ab3JBQrn (ORCPT ); Wed, 2 Oct 2013 12:47:43 -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 r92AroXN002450; Wed, 2 Oct 2013 12:53:51 +0200 Received: (from agordeev@localhost) by dhcp-26-207.brq.redhat.com (8.14.5/8.14.5/Submit) id r92ArmKM002449; Wed, 2 Oct 2013 12:53:48 +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 16/77] cciss: Update MSI/MSI-X interrupts enablement code Date: Wed, 2 Oct 2013 12:48:32 +0200 Message-Id: <0498333a0ddc360d43d4496310917a5d0f9a51fd.1380703262.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=ham 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/block/cciss.c | 17 +++++++---------- 1 files changed, 7 insertions(+), 10 deletions(-) diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index d2d95ff..80068a0 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -4079,7 +4079,11 @@ static void cciss_interrupt_mode(ctlr_info_t *h) goto default_int_mode; if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) { - err = pci_enable_msix(h->pdev, cciss_msix_entries, 4); + err = pci_msix_table_size(h->pdev); + if (err < ARRAY_SIZE(cciss_msix_entries)) + goto default_int_mode; + err = pci_enable_msix(h->pdev, cciss_msix_entries, + ARRAY_SIZE(cciss_msix_entries)); if (!err) { h->intr[0] = cciss_msix_entries[0].vector; h->intr[1] = cciss_msix_entries[1].vector; @@ -4088,15 +4092,8 @@ static void cciss_interrupt_mode(ctlr_info_t *h) h->msix_vector = 1; return; } - if (err > 0) { - dev_warn(&h->pdev->dev, - "only %d MSI-X vectors available\n", err); - goto default_int_mode; - } else { - dev_warn(&h->pdev->dev, - "MSI-X init failed %d\n", err); - goto default_int_mode; - } + dev_warn(&h->pdev->dev, "MSI-X init failed %d\n", err); + goto default_int_mode; } if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) { if (!pci_enable_msi(h->pdev))