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

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Message-ID: <AANLkTimCqZsJ6eY2zk0hJNhkYJDPbYnviiZ4gadnf-bB@mail.gmail.com>
Date:	Tue, 19 Oct 2010 12:55:04 +0300
From:	Felipe Contreras <felipe.contreras@...il.com>
To:	balbi@...com
Cc:	"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
	linux-main <linux-kernel@...r.kernel.org>,
	Greg KH <greg@...ah.com>
Subject: Re: [PATCH 3/3] drivers: cleanup Kconfig stuff

On Tue, Oct 19, 2010 at 12:01 PM, Felipe Balbi <balbi@...com> wrote:
> On Tue, Oct 19, 2010 at 03:34:55AM -0500, Felipe Contreras wrote:
>>>
>>> It was fine as it was before. NAK
>>
>> It's not fine. You can build with CONFIG_USB_G_NOKIA=y, and it doesn't
>> work. Definitely some dependency is missing.
>
> if phonet is not set it should not build. If phonet is set to module and
> g_nokia to built-in, then it's your mistake.

I'm not talking about phonet, I replied to your comment regarding
USB_GADGET_MUSB_HDRC. For me USB_GADGET_MUSB_HDRC=n USB_G_NOKIA=y
doesn't work, but the Kconfig allows it.

>> How do you handle USB_MUSB_HDRC=y and NOP_USB_XCEIV=n and TWL4030_USB=n?
>>
>> depends on (NOP_USB_XCEIV || TWL4030_USB) ?
>
> you're selecting, not depending on this patch. What I mean is that you
> will enable a useless driver on some boards if you "select TWL4030_USB
> if ARCH_OMAP3"

Ok, I'll make it: depends on (NOP_USB_XCEIV || TWL4030_USB)

BTW, if you want to try this:
./scripts/kconfig/conf --defconfig=usb_defconfig arch/arm/Kconfig

usb_defconfig:
CONFIG_ARCH_OMAP=y
CONFIG_EXPERIMENTAL=y
CONFIG_NET=y
CONFIG_PHONET=y

CONFIG_USB=y
CONFIG_USB_GADGET=y
CONFIG_USB_MUSB_OTG=y
CONFIG_USB_MUSB_HDRC=y
CONFIG_USB_G_NOKIA=y

# TODO USB_MUSB_OTG should select this
CONFIG_USB_GADGET_MUSB_HDRC=y

I expect TWL4030_USB and USB_OTG to be automatically selected.

-- 
Felipe Contreras
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