Re: [PATCH] pci bridge class code

[Russell King <rmk@arm.linux.org.uk>]

On Thu, May 29, 2003 at 01:17:42PM -0700, Mark Haverkamp wrote:
> This adds pci-pci bridge driver model class code.  Entries appear in 
> /sys/class/pci_bridge.

Hmm.  Ok.

How do you propose to handle the following case:

Mobility Electronics supply a Cardbus to PCI bridged "docking station"
which has a PCI-PCI bridge on with vendor stuff above 0x40.  It appears
as a standard PCI-PCI bridge; the only specific identifying information
are the device and vendor IDs.  How can I guarantee that a driver I
write for this device will be picked up in preference to your driver.

(Given that your driver would probably be always loaded, and my driver
could well be a loadable module.)

I'm not saying that I will need to do this, but this is something which
needs to be carefully thought about if we're going to provide a generic
driver.

-- 
Russell King (rmk@arm.linux.org.uk)                The developer of ARM Linux
             http://www.arm.linux.org.uk/personal/aboutme.html