Building the UVC gadget into the kernel fails to build when CONFIG_VIDEO_V4L2 is a loadable module: drivers/usb/gadget/function/usb_f_uvc.o: In function `uvc_function_ep0_complete': uvc_configfs.c:(.text.uvc_function_ep0_complete+0x84): undefined reference to `v4l2_event_queue' drivers/usb/gadget/function/usb_f_uvc.o: In function `uvc_function_disable': uvc_configfs.c:(.text.uvc_function_disable+0x34): undefined reference to `v4l2_event_queue' Adding a dependency in USB_CONFIGFS_F_UVC (which is a bool symbol) make the 'select USB_F_UVC' statement turn the USB_F_UVC into 'm' whenever CONFIG_VIDEO_V4L2=m too, avoiding the link failure. Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> --- drivers/usb/gadget/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 2ea3fc3c41b9..8ad203296079 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -420,6 +420,7 @@ config USB_CONFIGFS_F_HID config USB_CONFIGFS_F_UVC bool "USB Webcam function" depends on USB_CONFIGFS + depends on VIDEO_V4L2 depends on VIDEO_DEV select VIDEOBUF2_VMALLOC select USB_F_UVC -- 2.9.0 -- 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
