Since commit 5e0aa49 usb: chipidea: use generic map/unmap routines, the udc part of the chipidea driver needs the generic usb gadget helper functions. If the chipidea driver with udc support is build into the kernel and usb gadget is build a module, the linking of the kernel fails with: drivers/built-in.o: In function `_hardware_dequeue': drivers/usb/chipidea/udc.c:527: undefined reference to `usb_gadget_unmap_request' drivers/usb/chipidea/udc.c:1269: undefined reference to `usb_gadget_unmap_request' drivers/usb/chipidea/udc.c:1821: undefined reference to `usb_del_gadget_udc' drivers/usb/chipidea/udc.c:443: undefined reference to `usb_gadget_map_request' drivers/usb/chipidea/udc.c:1774: undefined reference to `usb_add_gadget_udc' This patch changes the dependencies, so that udc can only be built-in of the usb gadget is built-in, too. Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx> Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx> --- Hello, this patch is based on v3.5-rc7, is this a candidate for 3.5? Another solution would be to "select USB_GADGET".... regards, Marc drivers/usb/chipidea/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/chipidea/Kconfig b/drivers/usb/chipidea/Kconfig index fd36dc8..9993a66 100644 --- a/drivers/usb/chipidea/Kconfig +++ b/drivers/usb/chipidea/Kconfig @@ -12,7 +12,7 @@ if USB_CHIPIDEA config USB_CHIPIDEA_UDC bool "ChipIdea device controller" - depends on USB_GADGET + depends on USB_GADGET=USB_CHIPIDEA select USB_GADGET_DUALSPEED help Say Y here to enable device controller functionality of the -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html