[PATCH] Documentation/video4linux: don't build without CONFIG_VIDEO_V4L2

[Andrey Vagin]

Otherwise we get warnings:
WARNING: "vb2_ops_wait_finish" [Documentation//video4linux/v4l2-pci-skeleton.ko] undefined!
WARNING: "vb2_ops_wait_prepare" [Documentation//video4linux/v4l2-pci-skeleton.ko] undefined!
...
WARNING: "video_unregister_device" [Documentation//video4linux/v4l2-pci-skeleton.ko] undefined!

Fixes: 8db5ab4b50fb ("Documentation: add makefiles for more targets")

Cc: Peter Foley <pefoley2@xxxxxxxxxxx>
Cc: Mauro Carvalho Chehab <m.chehab@xxxxxxxxxxx>
Cc: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Signed-off-by: Andrey Vagin <avagin@xxxxxxxxxx>
---
 Documentation/video4linux/Makefile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/video4linux/Makefile b/Documentation/video4linux/Makefile
index d58101e..f19f38e 100644
--- a/Documentation/video4linux/Makefile
+++ b/Documentation/video4linux/Makefile
@@ -1 +1,3 @@
+ifneq ($(CONFIG_VIDEO_V4L2),)
 obj-m := v4l2-pci-skeleton.o
+endif
-- 
1.9.3

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