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 <a...@arndb.de>
---
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
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