Re: [PATCH v2 6/7] PCI: Make sure VF's driver get attached after PF's

[Ben Hutchings <bhutchings@solarflare.com>]

On Mon, 2013-05-20 at 15:58 +0300, Eliezer Tamir wrote:
> On 20/05/2013 15:28, Or Gerlitz wrote:
> > On Wed, May 15, 2013 at 7:12 PM, Greg Rose <gregory.v.rose@intel.com> wrote:
> >
> >
> >> I'm really not a fan of this.  Seems to me the tail is wagging the dog
> >> here.  Fix the driver to work without a PF driver being present.
> >
> > Greg, Alex,
> >
> > As I wrote over the V1 thread, currently we can't go and patch mlx4 to
> > use the sysfs API nor defer the call from within our probe function to
> > enable sriov since  this requires some firmware change to allow
> > enabling SRIOV after some  resources are initialized/provisioned.
> > Hence the patch suggested here or any other patch we can agree on
> > which will make sure that VF probing is done only once the PF is ready
> > is preferred, I think.
> >
> Maybe do the following:
> 1. split the VF PCI IDs into a separate PCI_ID device table.
> 2. have two pci_driver structs, one for all of the PF IDS and one with 
> the VF IDS.
> 3. only register the first pci_driver struct from mlx4_init().
> 4. register the one for the VFs once your PFs are all up and ready.

But hotplug.

Ben.

-- 
Ben Hutchings, Staff Engineer, Solarflare
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