Messages in this thread | | | Subject | Re: [PATCH v2 6/7] PCI: Make sure VF's driver get attached after PF's | From | Ben Hutchings <> | Date | Mon, 20 May 2013 17:07:15 +0100 |
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On Mon, 2013-05-20 at 15:28 +0300, 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. > > I wasn't sure to totally follow on the argument that things need to > work when the PF is absent in the sense there's no driver instance > around over which the PF is probed, if you can explain little better, > that would help.
It might be sufficient to return -EPROBE_DEFER from the VF probe function when the PF is not yet ready, if you can easily detect that.
Ben.
-- Ben Hutchings, Staff Engineer, Solarflare Not speaking for my employer; that's the marketing department's job. They asked us to note that Solarflare product names are trademarked.
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