On Fri, 2018-05-25 at 18:07 +0200, Arnd Bergmann wrote:
> Without that option, we run into a link failure:
>
> drivers/usb/gadget/udc/aspeed-vhub/hub.o: In function `ast_vhub_std_hub_request':
> hub.c:(.text+0x5b0): undefined reference to `usb_gadget_get_string'
Thanks ! I hadn't realized these functions were part of an optional
library.
> Fixes: 7ecca2a4080c ("usb/gadget: Add driver for Aspeed SoC virtual hub")
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Acked-by: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
> ---
> drivers/usb/gadget/udc/aspeed-vhub/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/usb/gadget/udc/aspeed-vhub/Kconfig b/drivers/usb/gadget/udc/aspeed-vhub/Kconfig
> index f0cdf89b8503..83ba8a2eb6af 100644
> --- a/drivers/usb/gadget/udc/aspeed-vhub/Kconfig
> +++ b/drivers/usb/gadget/udc/aspeed-vhub/Kconfig
> @@ -2,6 +2,7 @@
> config USB_ASPEED_VHUB
> tristate "Aspeed vHub UDC driver"
> depends on ARCH_ASPEED || COMPILE_TEST
> + depends on USB_LIBCOMPOSITE
> help
> USB peripheral controller for the Aspeed AST2500 family
> SoCs supporting the "vHub" functionality and USB2.0
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