linux-kernel - Re: [PATCH v2 3/5] PCI: st: Provide support for the sti PCIe controller

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Date:	Wed, 18 Mar 2015 11:35:30 +0100
From:	Paul Bolle <pebolle@...cali.nl>
To:	Fabrice Gasnier <fabrice.gasnier@...com>
Cc:	Gabriel FERNANDEZ <gabriel.fernandez@...com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Srinivas Kandagatla <srinivas.kandagatla@...il.com>,
	Maxime Coquelin <maxime.coquelin@...com>,
	Patrice Chotard <patrice.chotard@...com>,
	Russell King <linux@....linux.org.uk>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Mohit Kumar <mohit.kumar@...com>,
	Jingoo Han <jg1.han@...sung.com>,
	Lucas Stach <l.stach@...gutronix.de>,
	Kishon Vijay Abraham I <kishon@...com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"David S. Miller" <davem@...emloft.net>,
	Greg KH <gregkh@...uxfoundation.org>,
	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	Joe Perches <joe@...ches.com>, Tejun Heo <tj@...nel.org>,
	Arnd Bergmann <arnd@...db.de>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	Thierry Reding <treding@...dia.com>,
	Phil Edworthy <phil.edworthy@...esas.com>,
	Minghuan Lian <Minghuan.Lian@...escale.com>,
	Tanmay Inamdar <tinamdar@....com>, m-karicheri2@...com,
	Sachin Kamat <sachin.kamat@...sung.com>,
	Andrew Lunn <andrew@...n.ch>,
	Liviu Dudau <liviu.dudau@....com>, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	kernel@...inux.com, linux-pci@...r.kernel.org,
	Lee Jones <lee.jones@...aro.org>,
	Gabriel Fernandez <gabriel.fernandez@...aro.org>
Subject: Re: [PATCH v2 3/5] PCI: st: Provide support for the sti PCIe
 controller

Hi Fabrice,

Fabrice Gasnier schreef op wo 18-03-2015 om 09:49 [+0100]:
> On 03/16/2015 04:11 PM, Paul Bolle wrote:
> >> +config PCI_ST
> >> +	bool "ST PCIe controller"
> > You add a bool Kconfig symbol. A week or two ago I saw some patches fly
> > by that - I think - allowed PCIe controllers to be built modular.
> 
> Thanks for your review.
> 
> Are you talking about "PCI: Export symbols of PCI functions" patch, that 
> is part of a series
> named "pci: iproc: Add Broadcom iProc PCIe support" ?

Yes, that is the series I was thinking about. (I made you search lkml,
and that was a bit rude. But you found the patch anyhow.)

> This controller doesn't look like to be based on pcie-designware core 
> driver.
> Other vendors that are using "pcie-designware" core driver are also make 
> it bool.
> The current core driver doesn't support module loading/unloading as I 
> see it.
> If this is required, I also think this should be part of another patchset.
> 
> What do you think ?

I wouldn't know whether your driver might work as a loadable module, but
other people reading this surely will. But if it can't work as a module
you should drop all the module related macros etc. I spotted. Because
then they serve no purpose.


Paul Bolle

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