[PATCH net-next 34/35] vmxnet3: Use pci_enable_msix_range() instead of pci_enable_msix()

From: Alexander Gordeev
Date: Tue Feb 18 2014 - 05:12:54 EST


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@xxxxxxxxxx>
Cc: Shreyas Bhatewara <sbhatewara@xxxxxxxxxx>
Cc: pv-drivers@xxxxxxxxxx
Cc: netdev@xxxxxxxxxxxxxxx
Cc: linux-pci@xxxxxxxxxxxxxxx
---
drivers/net/vmxnet3/vmxnet3_drv.c | 47 +++++++++++++++----------------------
1 files changed, 19 insertions(+), 28 deletions(-)

diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c
index 3a17797..9275c8c 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;
}


--
1.7.7.6

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