Re: [PATCH 07/20] PCI: implement Devres interface to map PCI config space

Andy Shevchenko
2017-03-02T13:21:14Z

On Thu, Mar 2, 2017 at 2:05 PM, Lorenzo Pieralisi
<lorenzo.pieralisi@arm.com> wrote:
> On Thu, Mar 02, 2017 at 01:54:42AM +0200, Andy Shevchenko wrote:
>> On Mon, Feb 27, 2017 at 5:14 PM, Lorenzo Pieralisi
>> <lorenzo.pieralisi@arm.com> wrote:

+Cc: Tejun, who is initial author of PCI managed resources implementation.

> I thought about that and did not do it because here we are remapping
> resources that are _not_ PCI bus resources (ie it is not PCI BARs we
> are remapping), keeping the devm_* prefix would be more consistent
> to the typical device drivers remapping functions pattern (ie a
> typical PCI host controller driver would mix devm_ and pcim_ calls
> which is a bit hard to parse), that was my rationale.
>
> I am not too fussed about that either way, I am happy to update it to
> pcim_* though, it is Bjorn/Arnd's decision.

I would vote for pcim_*() variant.

>> 2. If you may notice there is no separate pcim_*map*() stuff, they are
>> dynamically adapting to the case.
>
> I do not understand what you mean here I would ask you to elaborate
> a bit more please so that I can do something about it.

Oh, sorry, there are two examples currently, i.e.
pci_enable_msi()/pci_enable_msix() and pci_request_region*() which has
no "m" in the name, but are managed on release by pcim_release().
Some developers consider this as a bad idea, but so far no patch has
been sent to introduce pcim_*() variants of those.

So, regarding to your stuff, I would stick with "pcim" prefix.

--
With Best Regards,
Andy Shevchenko