linux-kernel - Re: [PATCH 04/14] PCI: generic: make it explicitly non-modular

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Message-ID: <20160704173752.GR1639@arm.com>
Date:	Mon, 4 Jul 2016 18:37:52 +0100
From:	Will Deacon <will.deacon@....com>
To:	Paul Gortmaker <paul.gortmaker@...driver.com>
Cc:	linux-kernel@...r.kernel.org, Bjorn Helgaas <bhelgaas@...gle.com>,
	linux-pci@...r.kernel.org, arnd@...db.de, david.daney@...ium.com,
	jchandra@...adcom.com
Subject: Re: [PATCH 04/14] PCI: generic: make it explicitly non-modular

On Sat, Jul 02, 2016 at 07:13:24PM -0400, Paul Gortmaker wrote:
> The Kconfig currently controlling compilation of this code is:
> 
> drivers/pci/host/Kconfig:config PCI_HOST_GENERIC
> drivers/pci/host/Kconfig:       bool "Generic PCI host controller"
> 
> ...meaning that it currently is not being built as a module by anyone.
> 
> Lets remove the few trace uses of modular code and macros, so that
> when reading the driver there is no doubt it is builtin-only.
> 
> Since module_platform_driver() uses the same init level priority as
> builtin_platform_driver() the init ordering remains unchanged with
> this commit.
> 
> Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.
> 
> We also delete the MODULE_LICENSE tag etc. since all that information
> is already contained at the top of the file in the comments.

Ideally, we'd simply fix this to build as a module, but it's not clear
how to do that now that the ecam accessors have been split out into
their own file. A liberal sprinkling of EXPORT_SYMBOL might work, but
it's a bit grotty.

David, Jayachandran -- do you have any desire to build your PCI host
controller drivers as modules?

Will