[media] Feature removal: using capture and output capabilities for m2m devices

Identifying a memory-to-memory video device through an ORed output and
capture capability flags is not reliable. Schedule this for removal.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index b998030..dbefb17 100644 (file)
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -576,3 +576,17 @@ Why:       The regular V4L2 selections and the subdev selection API originally
        any instabilities in the user space interface. After few cycles these
        backward compatibility definitions will be removed.
 Who:   Sylwester Nawrocki <sylvester.nawrocki@gmail.com>
+
+----------------------------
+
+What:  Using V4L2_CAP_VIDEO_CAPTURE and V4L2_CAP_VIDEO_OUTPUT flags
+       to indicate a V4L2 memory-to-memory device capability
+When:  3.8
+Why:   New drivers should use new V4L2_CAP_VIDEO_M2M capability flag
+       to indicate a V4L2 video memory-to-memory (M2M) device and
+       applications can now identify a M2M video device by checking
+       for V4L2_CAP_VIDEO_M2M, with VIDIOC_QUERYCAP ioctl. Using ORed
+       V4L2_CAP_VIDEO_CAPTURE and V4L2_CAP_VIDEO_OUTPUT flags for M2M
+       devices is ambiguous and may lead, for example, to identifying
+       a M2M device as a video capture or output device.
+Who:   Sylwester Nawrocki <s.nawrocki@samsung.com>