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Date: Wed, 2 Oct 2013 12:49:07 +0200 From: Alexander Gordeev <agordeev@...hat.com> To: linux-kernel@...r.kernel.org Cc: Alexander Gordeev <agordeev@...hat.com>, Bjorn Helgaas <bhelgaas@...gle.com>, Ralf Baechle <ralf@...ux-mips.org>, Michael Ellerman <michael@...erman.id.au>, Benjamin Herrenschmidt <benh@...nel.crashing.org>, Martin Schwidefsky <schwidefsky@...ibm.com>, Ingo Molnar <mingo@...hat.com>, Tejun Heo <tj@...nel.org>, Dan Williams <dan.j.williams@...el.com>, Andy King <acking@...are.com>, Jon Mason <jon.mason@...el.com>, Matt Porter <mporter@...nel.crashing.org>, linux-pci@...r.kernel.org, linux-mips@...ux-mips.org, linuxppc-dev@...ts.ozlabs.org, linux390@...ibm.com, linux-s390@...r.kernel.org, x86@...nel.org, linux-ide@...r.kernel.org, iss_storagedev@...com, linux-nvme@...ts.infradead.org, linux-rdma@...r.kernel.org, netdev@...r.kernel.org, e1000-devel@...ts.sourceforge.net, linux-driver@...gic.com, Solarflare linux maintainers <linux-net-drivers@...arflare.com>, "VMware, Inc." <pv-drivers@...are.com>, linux-scsi@...r.kernel.org Subject: [PATCH RFC 51/77] mthca: Update MSI/MSI-X interrupts enablement code 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 <agordeev@...hat.com> --- drivers/infiniband/hw/mthca/mthca_main.c | 16 +++++++++++----- 1 files changed, 11 insertions(+), 5 deletions(-) diff --git a/drivers/infiniband/hw/mthca/mthca_main.c b/drivers/infiniband/hw/mthca/mthca_main.c index 87897b9..3d44ca4 100644 --- a/drivers/infiniband/hw/mthca/mthca_main.c +++ b/drivers/infiniband/hw/mthca/mthca_main.c @@ -854,17 +854,23 @@ static int mthca_enable_msi_x(struct mthca_dev *mdev) struct msix_entry entries[3]; int err; + err = pci_msix_table_size(mdev->pdev); + if (err < 0) + return err; + if (err < ARRAY_SIZE(entries)) { + mthca_info(mdev, "Only %d MSI-X vectors available, " + "not using MSI-X\n", err); + + return -ENOSPC; + } + entries[0].entry = 0; entries[1].entry = 1; entries[2].entry = 2; err = pci_enable_msix(mdev->pdev, entries, ARRAY_SIZE(entries)); - if (err) { - if (err > 0) - mthca_info(mdev, "Only %d MSI-X vectors available, " - "not using MSI-X\n", err); + if (err) return err; - } mdev->eq_table.eq[MTHCA_EQ_COMP ].msi_x_vector = entries[0].vector; mdev->eq_table.eq[MTHCA_EQ_ASYNC].msi_x_vector = entries[1].vector; -- 1.7.7.6 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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