linux-kernel - Re: [PATCH] phy: add dm816x dependency on USB

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Date:	Tue, 19 May 2015 18:59:22 +0530
From:	Kishon Vijay Abraham I <kishon@...com>
To:	Arnd Bergmann <arnd@...db.de>
CC:	<linux-kernel@...r.kernel.org>, Tony Lindgren <tony@...mide.com>,
	Bin Liu <binmlist@...il.com>,
	Brian Hutchinson <b.hutchman@...il.com>,
	Felipe Balbi <balbi@...com>,
	Matthijs van Duin <matthijsvanduin@...il.com>,
	<linux-omap@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] phy: add dm816x dependency on USB_PHY

Hi Arnd,

On Tuesday 19 May 2015 06:32 PM, Arnd Bergmann wrote:
> The newly added phy-dm816x-usb driver depends on the
> usb phy API and fails to link if that is disabled:
>
> drivers/built-in.o: In function `dm816x_usb_phy_remove':
> :(.text+0x3a28): undefined reference to `usb_remove_phy'
> drivers/built-in.o: In function `dm816x_usb_phy_probe':
> :(.text+0x3c18): undefined reference to `usb_add_phy_dev'

A patch to fix this has already been queued in the fixes branch
https://git.kernel.org/cgit/linux/kernel/git/kishon/linux-phy.git/commit/?h=fixes&id=7f7a4d306ff87502dc26860f54e798693cf9b1e1

Thanks
Kishon
>
> This adds an explicit dependency in Kconfig to avoid the
> build error in randconfig tests.
>
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> Fixes: 609adde838f4 ("phy: Add a driver for dm816x USB PHY")
>
> diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
> index fceac96c2a31..1b5c235562c9 100644
> --- a/drivers/phy/Kconfig
> +++ b/drivers/phy/Kconfig
> @@ -37,7 +37,7 @@ config ARMADA375_USBCLUSTER_PHY
>
>   config PHY_DM816X_USB
>   	tristate "TI dm816x USB PHY driver"
> -	depends on ARCH_OMAP2PLUS
> +	depends on ARCH_OMAP2PLUS && USB_PHY
>   	select GENERIC_PHY
>   	help
>   	  Enable this for dm816x USB to work.
>
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