Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754758Ab3JBRJN (ORCPT ); Wed, 2 Oct 2013 13:09:13 -0400 Received: from 221-186-24-89.in-addr.arpa ([89.24.186.221]:25779 "EHLO dhcp-26-207.brq.redhat.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1754600Ab3JBRJK (ORCPT ); Wed, 2 Oct 2013 13:09:10 -0400 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 77/77] vxge: Update MSI/MSI-X interrupts enablement code Date: Wed, 2 Oct 2013 12:49:33 +0200 Message-Id: <467ce10b1df795edf80ed222816ab739fee7b0ea.1380703263.git.agordeev@redhat.com> X-Mailer: git-send-email 1.7.7.6 In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2257 Lines: 71 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/net/ethernet/neterion/vxge/vxge-main.c | 36 ++++++++++------------- 1 files changed, 16 insertions(+), 20 deletions(-) diff --git a/drivers/net/ethernet/neterion/vxge/vxge-main.c b/drivers/net/ethernet/neterion/vxge/vxge-main.c index b81ff8b..b4d40dd 100644 --- a/drivers/net/ethernet/neterion/vxge/vxge-main.c +++ b/drivers/net/ethernet/neterion/vxge/vxge-main.c @@ -2297,7 +2297,21 @@ static int vxge_alloc_msix(struct vxgedev *vdev) int msix_intr_vect = 0, temp; vdev->intr_cnt = 0; -start: + ret = pci_msix_table_size(vdev->pdev); + if (ret < 0) + goto alloc_entries_failed; + + if (ret < (vdev->no_of_vpath * 2 + 1)) { + if ((max_config_vpath != VXGE_USE_DEFAULT) || (ret < 3)) { + ret = -ENOSPC; + goto alloc_entries_failed; + } + /* Try with less no of vector by reducing no of vpaths count */ + temp = (ret - 1)/2; + vxge_close_vpaths(vdev, temp); + vdev->no_of_vpath = temp; + } + /* Tx/Rx MSIX Vectors count */ vdev->intr_cnt = vdev->no_of_vpath * 2; @@ -2347,25 +2361,7 @@ start: vdev->vxge_entries[j].in_use = 0; ret = pci_enable_msix(vdev->pdev, vdev->entries, vdev->intr_cnt); - if (ret > 0) { - vxge_debug_init(VXGE_ERR, - "%s: MSI-X enable failed for %d vectors, ret: %d", - VXGE_DRIVER_NAME, vdev->intr_cnt, ret); - if ((max_config_vpath != VXGE_USE_DEFAULT) || (ret < 3)) { - ret = -ENOSPC; - goto enable_msix_failed; - } - - kfree(vdev->entries); - kfree(vdev->vxge_entries); - vdev->entries = NULL; - vdev->vxge_entries = NULL; - /* Try with less no of vector by reducing no of vpaths count */ - temp = (ret - 1)/2; - vxge_close_vpaths(vdev, temp); - vdev->no_of_vpath = temp; - goto start; - } else if (ret < 0) + if (ret) goto enable_msix_failed; return 0; -- 1.7.7.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/