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@xxxxxxxxxx>
---
v2: change 'depends on' to 'select'.
drivers/usb/gadget/udc/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/usb/gadget/udc/Kconfig b/drivers/usb/gadget/udc/Kconfig
index acaec3a..d103154 100644
--- a/drivers/usb/gadget/udc/Kconfig
+++ b/drivers/usb/gadget/udc/Kconfig
@@ -445,6 +445,7 @@ config USB_TEGRA_XUDC
tristate "NVIDIA Tegra Superspeed USB 3.0 Device Controller"
depends on ARCH_TEGRA || COMPILE_TEST
depends on PHY_TEGRA_XUSB
+ select USB_ROLE_SWITCH
help
Enables NVIDIA Tegra USB 3.0 device mode controller driver.
--
2.7.4
