Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754408Ab3JBQiB (ORCPT ); Wed, 2 Oct 2013 12:38:01 -0400 Received: from 221-186-24-89.in-addr.arpa ([89.24.186.221]:24683 "EHLO dhcp-26-207.brq.redhat.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1753715Ab3JBQh7 (ORCPT ); Wed, 2 Oct 2013 12:37:59 -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 70/77] vmci: Update MSI/MSI-X interrupts enablement code Date: Wed, 2 Oct 2013 12:49:26 +0200 Message-Id: <654a7884b9ad6fbe777d00bb0a226010e421b3b9.1380703263.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: 1644 Lines: 56 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/misc/vmw_vmci/vmci_guest.c | 22 +++++++++++++++------- 1 files changed, 15 insertions(+), 7 deletions(-) diff --git a/drivers/misc/vmw_vmci/vmci_guest.c b/drivers/misc/vmw_vmci/vmci_guest.c index b3a2b76..af5caf8 100644 --- a/drivers/misc/vmw_vmci/vmci_guest.c +++ b/drivers/misc/vmw_vmci/vmci_guest.c @@ -377,19 +377,27 @@ static int vmci_enable_msix(struct pci_dev *pdev, { int i; int result; + int nvec; - for (i = 0; i < VMCI_MAX_INTRS; ++i) { + result = pci_msix_table_size(pdev); + if (result < 0) + return result; + + nvec = min(result, VMCI_MAX_INTRS); + if (nvec < VMCI_MAX_INTRS) + nvec = 1; + + for (i = 0; i < nvec; ++i) { vmci_dev->msix_entries[i].entry = i; vmci_dev->msix_entries[i].vector = i; } - result = pci_enable_msix(pdev, vmci_dev->msix_entries, VMCI_MAX_INTRS); - if (result == 0) - vmci_dev->exclusive_vectors = true; - else if (result > 0) - result = pci_enable_msix(pdev, vmci_dev->msix_entries, 1); + result = pci_enable_msix(pdev, vmci_dev->msix_entries, nvec); + if (result) + return result; - return result; + vmci_dev->exclusive_vectors = true; + 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/