V4.1-RC build error after commit 77a3c6f

[Larry Finger]

Beginning with the commit in the subject, I get the following build error:

  CC [M]  drivers/media/v4l2-core/videobuf2-core.o
drivers/media/v4l2-core/videobuf2-core.c: In function âvb2_warn_zero_bytesusedâ:
drivers/media/v4l2-core/videobuf2-core.c:1253:2: error: implicit declaration of 
function â__WARNâ [-Werror=implicit-function-declaration]
  __WARN();
  ^
cc1: some warnings being treated as errors

My .config is attached.

This problem has been bisected to the following commit:

commit 77a3c6fd90c94f635edb00d4a65f485687538791
Author: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
Date:   Fri Jun 19 08:50:07 2015 -0300

    [media] vb2: Don't WARN when v4l2_buffer.bytesused is 0 for multiplanar buffers

    Commit f61bf13b6a07 ("[media] vb2: add allow_zero_bytesused flag to the
    vb2_queue struct") added a WARN_ONCE to catch usage of a deprecated API
    using a zero value for v4l2_buffer.bytesused.

    However, the condition is checked incorrectly, as the v4L2_buffer
    bytesused field is supposed to be ignored for multiplanar buffers. This
    results in spurious warnings when using the multiplanar API.

    Fix it by checking v4l2_buffer.bytesused for uniplanar buffers and
    v4l2_plane.bytesused for multiplanar buffers.

    Fixes: f61bf13b6a07 ("[media] vb2: add allow_zero_bytesused flag to the 
vb2_queue struct")

    Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
    Cc: stable@xxxxxxxxxxxxxxx # for v4.0
    Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxx>

Thanks,

Larry

Attachment: .config
Description: application/config