Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753322AbaBSKNm (ORCPT ); Wed, 19 Feb 2014 05:13:42 -0500 Received: from mx1.redhat.com ([209.132.183.28]:64580 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753009AbaBSKNk (ORCPT ); Wed, 19 Feb 2014 05:13:40 -0500 From: Alexander Gordeev To: linux-kernel@vger.kernel.org Cc: Alexander Gordeev , Jon Mason , linux-pci@vger.kernel.org Subject: [PATCH] ntb: Use pci_enable_msix_range() instead of pci_enable_msix() Date: Wed, 19 Feb 2014 11:15:21 +0100 Message-Id: <1392804931-30671-1-git-send-email-agordeev@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org As result of deprecation of MSI-X/MSI enablement functions pci_enable_msix() and pci_enable_msi_block() all drivers using these two interfaces need to be updated to use the new pci_enable_msi_range() and pci_enable_msix_range() interfaces. Signed-off-by: Alexander Gordeev Cc: Jon Mason Cc: linux-pci@vger.kernel.org --- drivers/ntb/ntb_hw.c | 43 ++++++++++++++++--------------------------- drivers/ntb/ntb_hw.h | 2 -- 2 files changed, 16 insertions(+), 29 deletions(-) diff --git a/drivers/ntb/ntb_hw.c b/drivers/ntb/ntb_hw.c index 170e8e6..fda37eb 100644 --- a/drivers/ntb/ntb_hw.c +++ b/drivers/ntb/ntb_hw.c @@ -1085,21 +1085,15 @@ static int ntb_setup_msix(struct ntb_device *ndev) struct msix_entry *msix; int msix_entries; int rc, i; - u16 val; - if (!pdev->msix_cap) { - rc = -EIO; - goto err; - } - - rc = pci_read_config_word(pdev, pdev->msix_cap + PCI_MSIX_FLAGS, &val); - if (rc) + rc = pci_msix_vec_count(pdev); + if (rc < 0) { goto err; - - msix_entries = msix_table_size(val); - if (msix_entries > ndev->limits.msix_cnt) { + } else if (rc > ndev->limits.msix_cnt) { rc = -EINVAL; goto err; + } else { + msix_entries = rc; } ndev->msix_entries = kmalloc(sizeof(struct msix_entry) * msix_entries, @@ -1112,26 +1106,21 @@ static int ntb_setup_msix(struct ntb_device *ndev) for (i = 0; i < msix_entries; i++) ndev->msix_entries[i].entry = i; - rc = pci_enable_msix(pdev, ndev->msix_entries, msix_entries); - if (rc < 0) - goto err1; - if (rc > 0) { + if (ndev->hw_type != BWD_HW) /* On SNB, the link interrupt is always tied to 4th vector. If * we can't get all 4, then we can't use MSI-X. */ - if (ndev->hw_type != BWD_HW) { - rc = -EIO; - goto err1; - } - - dev_warn(&pdev->dev, - "Only %d MSI-X vectors. Limiting the number of queues to that number.\n", - rc); + rc = pci_enable_msix_range(pdev, ndev->msix_entries, + msix_entries, msix_entries); + else + rc = pci_enable_msix_range(pdev, ndev->msix_entries, + 1, msix_entries); + if (rc < 0) + goto err1; + else if (rc < msix_entries) { + dev_warn(&pdev->dev, "Only %d MSI-X vectors. " + "Limiting the number of queues to that number.\n", rc); msix_entries = rc; - - rc = pci_enable_msix(pdev, ndev->msix_entries, msix_entries); - if (rc) - goto err1; } for (i = 0; i < msix_entries; i++) { diff --git a/drivers/ntb/ntb_hw.h b/drivers/ntb/ntb_hw.h index bbdb7ed..d307107 100644 --- a/drivers/ntb/ntb_hw.h +++ b/drivers/ntb/ntb_hw.h @@ -60,8 +60,6 @@ #define PCI_DEVICE_ID_INTEL_NTB_SS_HSX 0x2F0F #define PCI_DEVICE_ID_INTEL_NTB_B2B_BWD 0x0C4E -#define msix_table_size(control) ((control & PCI_MSIX_FLAGS_QSIZE)+1) - #ifndef readq static inline u64 readq(void __iomem *addr) { -- 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/