On Thu, Dec 20, 2012 at 2:47 PM, Bjorn Helgaas <bhelgaas@xxxxxxxxxx> wrote:
> I made the -EPERM change suggested by Greg and added this to my
> pci/for-3.8 branch. I'll ask Linus to pull it soon after v3.8-rc1.
After a little off-list discussion about the merits of EINVAL, EPERM,
EBUSY, etc., I adopted Ben's suggestion of EBUSY for this case:
+ if (pdev->sriov->num_VFs) {
+ dev_warn(&pdev->dev, "%d VFs already enabled. Disable
before enabling %d VFs\n",
+ pdev->sriov->num_VFs, num_vfs);
+ return -EBUSY;
where the idea is "the device is already busy providing N VFs, so you
can't configure it to serve M VFs"
Does that sound agreeable to everybody?
Bjorn
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