On Mon, Nov 04, 2019 at 07:21:04PM +0800, Mao Wenan wrote:
> If CONFIG_USB_TEGRA_XUDC=y and CONFIG_USB_ROLE_SWITCH=m,
> below erros can be seen:
> drivers/usb/gadget/udc/tegra-xudc.o: In function `tegra_xudc_remove':
> tegra-xudc.c:(.text+0x6b0): undefined reference to `usb_role_switch_unregister'
> drivers/usb/gadget/udc/tegra-xudc.o: In function `tegra_xudc_probe':
> tegra-xudc.c:(.text+0x1b88): undefined reference to `usb_role_switch_register'
> drivers/usb/gadget/udc/tegra-xudc.o: In function `tegra_xudc_usb_role_sw_work':
> tegra-xudc.c:(.text+0x5ecc): undefined reference to `usb_role_switch_get_role'
> 
> It should select USB_ROLE_SWITCH for UDC driver.
> 
> Fixes: 49db427232fe ("usb: gadget: Add UDC driver for tegra XUSB device mode controller")
> Signed-off-by: Mao Wenan <maowenan@huawei.com>
> ---
>  v2: change 'depends on' to 'select'.
>  drivers/usb/gadget/udc/Kconfig | 1 +
>  1 file changed, 1 insertion(+)

Acked-by: Thierry Reding <treding@nvidia.com>