linux-kernel - Re: [PATCH] usb: Kconfig: make USB_ULPI_BUS select USB

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Date:   Tue, 13 Sep 2016 09:48:55 +0800
From:   Peter Chen <hzpeterchen@...il.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Peter Chen <peter.chen@....com>,
        Felipe Balbi <balbi@...nel.org>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] usb: Kconfig: make USB_ULPI_BUS select USB_COMMON

On Mon, Sep 12, 2016 at 05:36:23PM +0200, Arnd Bergmann wrote:
> Moving the CONFIG_USB_ULPI_BUS option to the top-level Kconfig file
> means that we can enable it without any of the other USB support,
> leading to a build error because Kbuild never enters the
> drivers/usb/common/ directory without CONFIG_USB_COMMON:
> 
> ERROR: "ulpi_unregister_driver" [drivers/phy/phy-tusb1210.ko] undefined!
> ERROR: "__ulpi_register_driver" [drivers/phy/phy-tusb1210.ko] undefined!
> ERROR: "ulpi_write" [drivers/phy/phy-tusb1210.ko] undefined!
> 

Thanks, Arnd. I have submitted the fix.

https://git.kernel.org/cgit/linux/kernel/git/gregkh/usb.git/commit/?h=usb-next&id=6406c3d226374c28d452b11db3b5ac241ce26191

-- 

Best Regards,
Peter Chen