The dependency to ensure this driver links correctly fails since it can not be a loadable module: drivers/usb/phy/phy-fsl-usb.o: In function `fsl_otg_set_peripheral': phy-fsl-usb.c:(.text+0x2224): undefined reference to `usb_gadget_vbus_disconnect' Make the option 'tristate' so it can work correctly. Fixes: 5a8d651a2bde ("usb: gadget: move gadget API functions to udc-core") Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> --- drivers/usb/phy/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index 8c509b060c09..24b4f091acb8 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -21,7 +21,7 @@ config AB8500_USB in host mode, low speed. config FSL_USB2_OTG - bool "Freescale USB OTG Transceiver Driver" + tristate "Freescale USB OTG Transceiver Driver" depends on USB_EHCI_FSL && USB_FSL_USB2 && USB_OTG_FSM=y && PM depends on USB_GADGET || !USB_GADGET # if USB_GADGET=m, this can't be 'y' select USB_PHY -- 2.20.0