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* [PATCH] igb: SR-IOV init reordering
@ 2013-03-12 21:25 Alex Williamson
  2013-03-13  7:51 ` Jeff Kirsher
  0 siblings, 1 reply; 2+ messages in thread
From: Alex Williamson @ 2013-03-12 21:25 UTC (permalink / raw)
  To: gregory.v.rose, jeffrey.t.kirsher; +Cc: netdev, ddutile, linux-kernel, sassmann

igb is ineffective at setting a lower total VFs because:

int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs)
{
        ...
        /* Shouldn't change if VFs already enabled */
        if (dev->sriov->ctrl & PCI_SRIOV_CTRL_VFE)
                return -EBUSY;

Swap init ordering.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
---
 drivers/net/ethernet/intel/igb/igb_main.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index d5b8289..ac65c39 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -2546,8 +2546,8 @@ static void igb_probe_vfs(struct igb_adapter *adapter)
 	if ((hw->mac.type == e1000_i210) || (hw->mac.type == e1000_i211))
 		return;
 
-	igb_enable_sriov(pdev, max_vfs);
 	pci_sriov_set_totalvfs(pdev, 7);
+	igb_enable_sriov(pdev, max_vfs);
 
 #endif /* CONFIG_PCI_IOV */
 }


^ permalink raw reply related	[flat|nested] 2+ messages in thread

* Re: [PATCH] igb: SR-IOV init reordering
  2013-03-12 21:25 [PATCH] igb: SR-IOV init reordering Alex Williamson
@ 2013-03-13  7:51 ` Jeff Kirsher
  0 siblings, 0 replies; 2+ messages in thread
From: Jeff Kirsher @ 2013-03-13  7:51 UTC (permalink / raw)
  To: Alex Williamson; +Cc: gregory.v.rose, netdev, ddutile, linux-kernel, sassmann

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On Tue, 2013-03-12 at 15:25 -0600, Alex Williamson wrote:
> igb is ineffective at setting a lower total VFs because:
> 
> int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs)
> {
>         ...
>         /* Shouldn't change if VFs already enabled */
>         if (dev->sriov->ctrl & PCI_SRIOV_CTRL_VFE)
>                 return -EBUSY;
> 
> Swap init ordering.
> 
> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
> ---
>  drivers/net/ethernet/intel/igb/igb_main.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-) 

I have added the patch to my igb queue, thanks!

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^ permalink raw reply	[flat|nested] 2+ messages in thread

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