From: Alexander Gordeev Date: Tue, 18 Feb 2014 10:12:00 +0000 (+0100) Subject: sfc: Use pci_enable_msix_range() instead of pci_enable_msix() X-Git-Tag: firefly_0821_release~176^2~4167^2~316^2~4 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=184603d8825773afae24279e055440dddada478d;p=firefly-linux-kernel-4.4.55.git sfc: 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 Cc: Shradha Shah Cc: linux-net-drivers@solarflare.com Cc: netdev@vger.kernel.org Cc: linux-pci@vger.kernel.org Acked-by: Shradha Shah Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c index 62d1a78984c1..d72e0038a740 100644 --- a/drivers/net/ethernet/sfc/efx.c +++ b/drivers/net/ethernet/sfc/efx.c @@ -1344,20 +1344,23 @@ static int efx_probe_interrupts(struct efx_nic *efx) for (i = 0; i < n_channels; i++) xentries[i].entry = i; - rc = pci_enable_msix(efx->pci_dev, xentries, n_channels); - if (rc > 0) { + rc = pci_enable_msix_range(efx->pci_dev, + xentries, 1, n_channels); + if (rc < 0) { + /* Fall back to single channel MSI */ + efx->interrupt_mode = EFX_INT_MODE_MSI; + netif_err(efx, drv, efx->net_dev, + "could not enable MSI-X\n"); + } else if (rc < n_channels) { netif_err(efx, drv, efx->net_dev, "WARNING: Insufficient MSI-X vectors" " available (%d < %u).\n", rc, n_channels); netif_err(efx, drv, efx->net_dev, "WARNING: Performance may be reduced.\n"); - EFX_BUG_ON_PARANOID(rc >= n_channels); n_channels = rc; - rc = pci_enable_msix(efx->pci_dev, xentries, - n_channels); } - if (rc == 0) { + if (rc > 0) { efx->n_channels = n_channels; if (n_channels > extra_channels) n_channels -= extra_channels; @@ -1373,11 +1376,6 @@ static int efx_probe_interrupts(struct efx_nic *efx) for (i = 0; i < efx->n_channels; i++) efx_get_channel(efx, i)->irq = xentries[i].vector; - } else { - /* Fall back to single channel MSI */ - efx->interrupt_mode = EFX_INT_MODE_MSI; - netif_err(efx, drv, efx->net_dev, - "could not enable MSI-X\n"); } }