Re: [RFC PATCH] methods to access resources of a struct pci_dev

[Yinghai Lu <yinghai@kernel.org>]

On Sun, Jun 17, 2012 at 10:03 PM, Ram Pai <linuxram@us.ibm.com> wrote:
> PCI: methods to access resources of struct pci_dev
>
> Currently pci_dev structure holds an array of 17 PCI resources; six base
> BARs, one ROM BAR, four BRIDGE BARs, six sriov BARs.  This is wasteful.
> A bridge device just needs the 4 bridge resources. A non-bridge device
> just needs the six base resources and one ROM resource. The sriov
> resources are needed only if the device has SRIOV capability.
>
> The pci_dev structure needs to be re-organized to avoid unnecessary
> bloating.  However too much code outside the pci-bus driver, assumes the
> internal details of the pci_dev structure, thus making it hard to
> re-organize the datastructure.
>
> As a first step this patch provides generic methods to access the
> resource structure of the pci_dev.
>
> Once this patch is accepted, I have another 40+ patches that modify all
> the files that directly access the resource structure, to use the new
> methods provided in the first step.
>
> Finally we can re-organize the resource structure in the pci_dev
> structure and correspondingly update the methods.

I have patchset on this, please check

  git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git
 for-pci-for-each-res-addon

Thanks

Yinghai