Messages in this thread | | | Subject | Re: RFC: (re-)binding the VFIO platform driver to a platform device | From | Scott Wood <> | Date | Wed, 2 Oct 2013 16:08:41 -0500 |
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On Wed, 2013-10-02 at 13:37 -0700, gregkh@linuxfoundation.org wrote: > On Wed, Oct 02, 2013 at 11:43:30AM -0700, Christoffer Dall wrote: > > > What's wrong with a non-vfio-specific flag that a driver can set, that > > > indicates that the driver is willing to try to bind to any device on the > > > bus if explicitly requested via the existing sysfs bind mechanism? > > > > > It sounds more hackish to me to invent some 'generic' flag to solve a > > very specific case. What you're suggesting would let users specify that > > a serial driver should handle a NIC hardware, no? That sounds much much > > worse to me. > > You can do that today, with any PCI driver (or USB driver as well), just > use the bind/unbind files in sysfs and you had better "know" what you > are doing...
sysfs bind won't work if it driver_match_device() fails. PCI has PCI_ANY_ID, so the missing piece for PCI is a way to say that the driver should not bind to a device except when explicitly requested via sysfs bind.
I don't see any equivalent functionality to PCI_ANY_ID for platform devices.
-Scott
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