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

From: Eliezer Tamir
Date: Mon May 20 2013 - 08:58:47 EST

On 20/05/2013 15:28, Or Gerlitz wrote:
On Wed, May 15, 2013 at 7:12 PM, Greg Rose <gregory.v.rose@xxxxxxxxx> 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.

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