linux-kernel - Re: [PATCH v2 3/3] drivers: cleanup Kconfig stuff

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Message-ID: <4CBDC361.70507@ti.com>
Date:	Tue, 19 Oct 2010 21:42:17 +0530
From:	Anand Gadiyar <gadiyar@...com>
To:	Greg KH <greg@...ah.com>
CC:	Felipe Contreras <felipe.contreras@...il.com>,
	linux-usb@...r.kernel.org, linux-omap <linux-omap@...r.kernel.org>,
	linux-main <linux-kernel@...r.kernel.org>,
	Felipe Balbi <balbi@...com>, Tony Lindgren <tony@...mide.com>
Subject: Re: [PATCH v2 3/3] drivers: cleanup Kconfig stuff

On 10/19/2010 9:22 PM, Greg KH wrote:
> On Tue, Oct 19, 2010 at 01:03:28PM +0300, Felipe Contreras wrote:
>> Add missing dependencies, and remove redundant ones, and select sensible
>> defaults.
>>
>> Signed-off-by: Felipe Contreras<felipe.contreras@...il.com>
>> ---
>>   drivers/mfd/Kconfig        |    3 ++-
>>   drivers/regulator/Kconfig  |    1 +
>>   drivers/usb/gadget/Kconfig |    3 +--
>>   drivers/usb/musb/Kconfig   |    6 ++----
>>   drivers/usb/otg/Kconfig    |    2 ++
>>   5 files changed, 8 insertions(+), 7 deletions(-)
>>
>> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
>> index db51ea1..0bbaf01 100644
>> --- a/drivers/mfd/Kconfig
>> +++ b/drivers/mfd/Kconfig
>> @@ -156,6 +156,7 @@ config MENELAUS
>>   config TWL4030_CORE
>>   	bool "Texas Instruments TWL4030/TWL5030/TWL6030/TPS659x0 Support"
>>   	depends on I2C=y&&  GENERIC_HARDIRQS
>> +	default y if ARCH_OMAP3 || ARCH_OMAP4
>
> Sorry, but unless the driver is somehow required to keep the board from
> going up in a puff of smoke, a default should NEVER be y.
>
> Because of that, I can't take this patch.
>

This is the driver for the Power-management IC on the board. Without 
this IC being correctly configured, I'm guessing a lot of things will 
fail. Not so sure if anything will go up in smoke (sounds unlikely), or 
if the kernel will fail to boot - I'll check quickly - but for this one 
specific instance, I think it's reasonable to accept a default y.

Kevin/Tony can probably confirm.

Greg,

For other instances of unnecessary "default y", do you think they should 
be removed?

- Anand


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