| Message ID | 9d424912ef78993dc75e2af5006cd12913e9e7e7.1380703263.git.agordeev@redhat.com |
|---|---|
| State | RFC |
| Headers | show |
On Wed, 2 Oct 2013 12:49:07 +0200 Alexander Gordeev <agordeev@redhat.com> wrote: > Subject: [PATCH RFC 51/77] mthca: Update MSI/MSI-X interrupts > enablement code Date: Wed, 2 Oct 2013 12:49:07 +0200 > Sender: linux-rdma-owner@vger.kernel.org > X-Mailer: git-send-email 1.7.7.6 > > 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@redhat.com> > --- ACK. -Jack -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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;
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@redhat.com> --- drivers/infiniband/hw/mthca/mthca_main.c | 16 +++++++++++----- 1 files changed, 11 insertions(+), 5 deletions(-)