Re: [PATCH v2 3/4] usb: phy: Add Kconfig entry for Tegra PHY driver

[Dmitry Osipenko <digetx@gmail.com>]

On 20.12.2017 16:17, kbuild test robot wrote:
> Hi Dmitry,
> 
> Thank you for the patch! Yet something to improve:
> 
> [auto build test ERROR on balbi-usb/next]
> [also build test ERROR on v4.15-rc4 next-20171220]
> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
> 
> url:    https://github.com/0day-ci/linux/commits/Dmitry-Osipenko/usb-phy-tegra-Cleanup-error-messages/20171220-142227
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git next
> config: arm-tegra_defconfig (attached as .config)
> compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
> reproduce:
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # save the attached .config to linux build tree
>         make.cross ARCH=arm 
> 
> All errors (new ones prefixed by >>):
> 
>    drivers/usb/host/ehci-tegra.o: In function `tegra_ehci_hub_control':
>>> ehci-tegra.c:(.text+0x818): undefined reference to `tegra_usb_phy_preresume'
>>> ehci-tegra.c:(.text+0x9b4): undefined reference to `tegra_usb_phy_postresume'

So there is actual build-dependency on the PHY for ehci-tegra and I haven't
tested it properly. That's not good.

Would it be fine to extend the generic PHY with pre/postresume restore_start/end
functions?