linux-kernel - Re: [PATCH 2/3] PCI: OLPC configuration cleanup

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Date:	Wed, 22 Sep 2010 10:10:47 -0700
From:	Randy Dunlap <rdunlap@...otime.net>
To:	Daniel Drake <dsd@...top.org>
Cc:	tglx@...utronix.de, jbarnes@...tuousgeek.org,
	linux-pci@...r.kernel.org, x86@...nel.org,
	linux-kernel@...r.kernel.org, dilinger@...ued.net
Subject: Re: [PATCH 2/3] PCI: OLPC configuration cleanup

On Wed, 22 Sep 2010 17:44:02 +0100 (BST) Daniel Drake wrote:

> An OLPC system isn't usable without PCI, so we can simplify the
> configuration here.

preferably by using "depends on" instead of "select".


> Also updated the code to be clearer that this is only for XO-1, and
> fixed an issue where the XO-1 PCI configuration override was being
> applied for XO-1.5 laptops.
> 
> Based on earlier work by Deepak Saxena.
> 
> Signed-off-by: Daniel Drake <dsd@...top.org>
> ---
>  arch/x86/Kconfig       |   12 +++---------
>  arch/x86/kernel/olpc.c |    4 +---
>  arch/x86/pci/Makefile  |    2 +-
>  arch/x86/pci/olpc.c    |    4 ++--
>  4 files changed, 7 insertions(+), 15 deletions(-)
> 
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index cea0cd9..708ee0d 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -1899,10 +1899,6 @@ config PCI_GOMMCONFIG
>  config PCI_GODIRECT
>  	bool "Direct"
>  
> -config PCI_GOOLPC
> -	bool "OLPC"
> -	depends on OLPC
> -
>  config PCI_GOANY
>  	bool "Any"
>  
> @@ -1915,16 +1911,12 @@ config PCI_BIOS
>  # x86-64 doesn't support PCI BIOS access from long mode so always go direct.
>  config PCI_DIRECT
>  	def_bool y
> -	depends on PCI && (X86_64 || (PCI_GODIRECT || PCI_GOANY || PCI_GOOLPC))
> +	depends on PCI && (X86_64 || (PCI_GODIRECT || PCI_GOANY))
>  
>  config PCI_MMCONFIG
>  	def_bool y
>  	depends on X86_32 && PCI && (ACPI || SFI) && (PCI_GOMMCONFIG || PCI_GOANY)
>  
> -config PCI_OLPC
> -	def_bool y
> -	depends on PCI && OLPC && (PCI_GOOLPC || PCI_GOANY)
> -
>  config PCI_DOMAINS
>  	def_bool y
>  	depends on PCI
> @@ -2060,6 +2052,8 @@ config SCx200HR_TIMER
>  
>  config OLPC
>  	bool "One Laptop Per Child support"
> +	select PCI
> +	select PCI_GOANY
>  	select GPIOLIB
>  	---help---
>  	  Add support for detecting the unique features of the OLPC


---
~Randy
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