From: Alexander Gordeev <agordeev@redhat.com>
Date: Tue, 18 Feb 2014 10:12:03 +0000 (+0100)
Subject: vmxnet3: Use pci_enable_msix_range() instead of pci_enable_msix()
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=c0a1be3842c73128187a6d10623b011a8fa2dee6;p=deliverable%2Flinux.git

vmxnet3: 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: Shreyas Bhatewara <sbhatewara@vmware.com>
Cc: pv-drivers@vmware.com
Cc: netdev@vger.kernel.org
Cc: linux-pci@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c
index 3a17797e0817..9275c8c423b1 100644
--- a/drivers/net/vmxnet3/vmxnet3_drv.c
+++ b/drivers/net/vmxnet3/vmxnet3_drv.c
@@ -2738,35 +2738,26 @@ vmxnet3_read_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac)
 static int
 vmxnet3_acquire_msix_vectors(struct vmxnet3_adapter *adapter, int nvec)
 {
-	do {
-		int err = pci_enable_msix(adapter->pdev,
-					  adapter->intr.msix_entries, nvec);
-		if (!err) {
-			return nvec;
-		} else if (err < 0) {
-			dev_err(&adapter->netdev->dev,
-				"Failed to enable MSI-X, error: %d\n", err);
-			return err;
-		} else if (err < VMXNET3_LINUX_MIN_MSIX_VECT) {
-			dev_info(&adapter->pdev->dev,
-				 "Number of MSI-X which can be allocated "
-				 "is lower than min threshold required.\n");
-			return -ENOSPC;
-		} else {
-			/* If fails to enable required number of MSI-x vectors
-			 * try enabling minimum number of vectors required.
-			 */
-			dev_err(&adapter->netdev->dev,
-				"Failed to enable %d MSI-X, trying %d\n",
-				nvec, VMXNET3_LINUX_MIN_MSIX_VECT);
-			nvec = VMXNET3_LINUX_MIN_MSIX_VECT;
-		}
-	} while (nvec >= VMXNET3_LINUX_MIN_MSIX_VECT);
+	int ret = pci_enable_msix_range(adapter->pdev,
+					adapter->intr.msix_entries, nvec, nvec);
 
-	/*
-	 * Should never get here
-	 */
-	return -ENOSPC;
+	if (ret == -ENOSPC && nvec > VMXNET3_LINUX_MIN_MSIX_VECT) {
+		dev_err(&adapter->netdev->dev,
+			"Failed to enable %d MSI-X, trying %d\n",
+			nvec, VMXNET3_LINUX_MIN_MSIX_VECT);
+
+		ret = pci_enable_msix_range(adapter->pdev,
+					    adapter->intr.msix_entries,
+					    VMXNET3_LINUX_MIN_MSIX_VECT,
+					    VMXNET3_LINUX_MIN_MSIX_VECT);
+	}
+
+	if (ret < 0) {
+		dev_err(&adapter->netdev->dev,
+			"Failed to enable MSI-X, error: %d\n", ret);
+	}
+
+	return ret;
 }