mlx4: Use pci_enable_msix_range() instead of pci_enable_msix()

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 <agordeev@redhat.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Amir Vadai <amirv@mellanox.com>
Cc: netdev@vger.kernel.org
Cc: linux-pci@vger.kernel.org
Acked-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 16 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index d711158b0d4b..218b759c506e 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -1976,7 +1976,6 @@ static void mlx4_enable_msi_x(struct mlx4_dev *dev)
         int nreq = min_t(int, dev->caps.num_ports *
                          min_t(int, netif_get_num_default_rss_queues() + 1,
                                MAX_MSIX_P_PORT) + MSIX_LEGACY_SZ, MAX_MSIX);
-        int err;
         int i;
 
         if (msi_x) {
@@ -1990,23 +1989,13 @@ static void mlx4_enable_msi_x(struct mlx4_dev *dev)
                 for (i = 0; i < nreq; ++i)
                         entries[i].entry = i;
 
-        retry:
-                err = pci_enable_msix(dev->pdev, entries, nreq);
-                if (err) {
-                        /* Try again if at least 2 vectors are available */
-                        if (err > 1) {
-                                mlx4_info(dev, "Requested %d vectors, "
-                                          "but only %d MSI-X vectors available, "
-                                          "trying again\n", nreq, err);
-                                nreq = err;
-                                goto retry;
-                        }
+                nreq = pci_enable_msix_range(dev->pdev, entries, 2, nreq);
+
+                if (nreq < 0) {
                         kfree(entries);
                         goto no_msi;
-                }
-
-                if (nreq <
-                    MSIX_LEGACY_SZ + dev->caps.num_ports * MIN_MSIX_P_PORT) {
+                } else if (nreq < MSIX_LEGACY_SZ +
+                                  dev->caps.num_ports * MIN_MSIX_P_PORT) {
                         /*Working in legacy mode , all EQ's shared*/
                         dev->caps.comp_pool           = 0;
                         dev->caps.num_comp_vectors = nreq - 1;