usb: gadget: uvc: add V4L2 dependency
authorArnd Bergmann <arnd@arndb.de>
Mon, 12 Sep 2016 15:34:57 +0000 (17:34 +0200)
committerFelipe Balbi <felipe.balbi@linux.intel.com>
Tue, 13 Sep 2016 06:29:08 +0000 (09:29 +0300)
commite6be244a83211f3a9daaf5e29ee97fe0bf1efe5a
tree6392deedba92720e68786172124c884665be2579
parentb281dc630b41cd5d0c8600ffb3230ef9dc222b30
usb: gadget: uvc: add V4L2 dependency

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@arndb.de>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
drivers/usb/gadget/Kconfig