linux-kernel - Re: [PATCH 4/5] drivers/pci: make host/pci-keystone-dw.c modular

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Date:	Mon, 8 Feb 2016 14:03:07 -0500
From:	Murali Karicheri <m-karicheri2@...com>
To:	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Arnd Bergmann <arnd@...db.de>
CC:	<linux-kernel@...r.kernel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Stanimir Varbanov <svarbanov@...sol.com>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Thierry Reding <thierry.reding@...il.com>,
	<linux-pci@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 4/5] drivers/pci: make host/pci-keystone-dw.c modular

On 02/08/2016 10:53 AM, Paul Gortmaker wrote:
> [Re: [PATCH 4/5] drivers/pci: make host/pci-keystone-dw.c modular] On 08/02/2016 (Mon 10:59) Arnd Bergmann wrote:
> 
>> On Sunday 07 February 2016 19:00:43 Paul Gortmaker wrote:
>>> Export the symbols that this driver requires in order for it to
>>> be modular.  In addition to the one use case of a dw_pci sym, it
>>> has many instances of its own ks_dw_pci syms that need exporting
>>> in order to modpost w/o error.
>>>
>>> Cc: Murali Karicheri <m-karicheri2@...com>
>>> Cc: Bjorn Helgaas <bhelgaas@...gle.com>
>>> Cc: Stanimir Varbanov <svarbanov@...sol.com>
>>> Cc: Geert Uytterhoeven <geert+renesas@...der.be>
>>> Cc: Thierry Reding <thierry.reding@...il.com>
>>> Cc: Arnd Bergmann <arnd@...db.de>
>>> Cc: linux-pci@...r.kernel.org
>>> Cc: linux-arm-kernel@...ts.infradead.org
>>> Signed-off-by: Paul Gortmaker <paul.gortmaker@...driver.com>
>>> ---
>>
>>
>> Could we just have one module for the driver  instead of two?

I agree. Please note that Keystone PCI is tested only as static. 
I can help test the module if this series get to the next revision,
but it might be a while before I can do the test.

Murali

> 
> That thought crossed my mind, but I was considering merging the C files
> and figured it might be more churn than the maintainer wanted.  If
> maintainers are good with the below (assuming it works) then yes that
> also seems reasonable.
> 
> P.
> --
> 
>>
>> Something like below (untested)
>>
>> 	Arnd
>>
>> diff --git a/drivers/pci/host/Makefile b/drivers/pci/host/Makefile
>> index 7b2f20c6ccc6..0b472c680348 100644
>> --- a/drivers/pci/host/Makefile
>> +++ b/drivers/pci/host/Makefile
>> @@ -8,7 +8,8 @@ obj-$(CONFIG_PCI_RCAR_GEN2) += pci-rcar-gen2.o
>>  obj-$(CONFIG_PCI_RCAR_GEN2_PCIE) += pcie-rcar.o
>>  obj-$(CONFIG_PCI_HOST_GENERIC) += pci-host-generic.o
>>  obj-$(CONFIG_PCIE_SPEAR13XX) += pcie-spear13xx.o
>> -obj-$(CONFIG_PCI_KEYSTONE) += pci-keystone-dw.o pci-keystone.o
>> +obj-$(CONFIG_PCI_KEYSTONE) pci-keystone-mod.o
>> +pci-keystone-mod-objs := pci-keystone-dw.o pci-keystone.o
>>  obj-$(CONFIG_PCIE_XILINX) += pcie-xilinx.o
>>  obj-$(CONFIG_PCI_XGENE) += pci-xgene.o
>>  obj-$(CONFIG_PCI_XGENE_MSI) += pci-xgene-msi.o
>>
> 


-- 
Murali Karicheri
Linux Kernel, Keystone