[RFCv4 14/21] videodev2.h: add request_fd field to v4l2_ext_controls

[Alexandre Courbot]

Allow to specify a request to be used with the S_EXT_CTRLS and
G_EXT_CTRLS operations.

Signed-off-by: Alexandre Courbot <acour...@chromium.org>
---
 drivers/media/v4l2-core/v4l2-ioctl.c | 2 +-
 include/uapi/linux/videodev2.h       | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c 
b/drivers/media/v4l2-core/v4l2-ioctl.c
index 7bfeaf233d5a..2f40ac0cdf6e 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -870,7 +870,7 @@ static int check_ext_ctrls(struct v4l2_ext_controls *c, int 
allow_priv)
        __u32 i;
 
        /* zero the reserved fields */
-       c->reserved[0] = c->reserved[1] = 0;
+       c->reserved[0] = 0;
        for (i = 0; i < c->count; i++)
                c->controls[i].reserved2[0] = 0;
 
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 4fd46ae8fad5..91cfe0cbd5c5 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -1592,7 +1592,8 @@ struct v4l2_ext_controls {
        };
        __u32 count;
        __u32 error_idx;
-       __u32 reserved[2];
+       __s32 request_fd;
+       __u32 reserved[1];
        struct v4l2_ext_control *controls;
 };
 
-- 
2.16.1.291.g4437f3f132-goog