linux-kernel - Re: [PATCH] usb: phy-am335x: clarify USB

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Date:	Wed, 03 Feb 2016 19:54:02 +0200
From:	Felipe Balbi <balbi@...nel.org>
To:	Bin Liu <b-liu@...com>, Arnd Bergmann <arnd@...db.de>
Cc:	Felipe Balbi <balbi@...com>, balbif@...il.com,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] usb: phy-am335x: clarify USB_COMMON dependency


hi,

Bin Liu <b-liu@...com> writes:
> On Wed, Jan 20, 2016 at 11:56:34AM +0100, Arnd Bergmann wrote:
>> The phy-am335x driver accidentally selects 'USB_COMMON', which is
>> not correct as that symbol should indicate whether USB host or
>> target mode is enabled, but it might not:
>> 
>> warning: (AM335X_PHY_USB) selects USB_COMMON which has unmet direct dependencies (USB_SUPPORT && (USB || USB_GADGET))
>
> Is it possible to have a .config which has either USB nor USB_GADGET
> set but AM335X_PHY_USB is set to be in the situation as in the warning
> above?
>
>> 
>> This changes the 'select' into 'depends on', as it should have
>> been initially.
>
> Using 'depends on' causes AM335x_PHY_USB driver unable to built-in,
> since USB_COMMON is an invisible option and its defualt is 'M'.


yeah, USB_COMMON is supposed to be selected, not depended upon.

-- 
balbi

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