Re: [pci PATCH v8 2/4] ena: Migrate over to unmanaged SR-IOV support

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On 4/20/2018 9:30 AM, Alexander Duyck wrote:
Instead of implementing our own version of a SR-IOV configuration stub in
the ena driver we can just reuse the existing
pci_sriov_configure_simple function.

Signed-off-by: Alexander Duyck <alexander.h.duyck@xxxxxxxxx>
---

v5: Replaced call to pci_sriov_configure_unmanaged with
         pci_sriov_configure_simple
v6: Dropped "#ifdef" checks for IOV wrapping sriov_configure definition
v7: No change

  drivers/net/ethernet/amazon/ena/ena_netdev.c |   28 +-------------------------
  1 file changed, 1 insertion(+), 27 deletions(-)

diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c
index a822e70..f2af87d 100644
--- a/drivers/net/ethernet/amazon/ena/ena_netdev.c
+++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c
@@ -3386,32 +3386,6 @@ static int ena_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
  }
/*****************************************************************************/
-static int ena_sriov_configure(struct pci_dev *dev, int numvfs)
-{
-	int rc;
-
-	if (numvfs > 0) {
-		rc = pci_enable_sriov(dev, numvfs);
-		if (rc != 0) {
-			dev_err(&dev->dev,
-				"pci_enable_sriov failed to enable: %d vfs with the error: %d\n",
-				numvfs, rc);
-			return rc;
-		}
-
-		return numvfs;
-	}
-
-	if (numvfs == 0) {
-		pci_disable_sriov(dev);
-		return 0;
-	}
-
-	return -EINVAL;
-}
-
-/*****************************************************************************/
-/*****************************************************************************/
/* ena_remove - Device Removal Routine
   * @pdev: PCI device information struct
@@ -3526,7 +3500,7 @@ static int ena_resume(struct pci_dev *pdev)
  	.suspend    = ena_suspend,
  	.resume     = ena_resume,
  #endif
-	.sriov_configure = ena_sriov_configure,
+	.sriov_configure = pci_sriov_configure_simple,
  };
static int __init ena_init(void)


Reviewed-by: Greg Rose <gvrose8192@xxxxxxxxx>




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