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    Subject[PATCH v5 08/13] media: platform: pxa_camera: add buffer sequencing
    Date
    Add sequence numbers to completed buffers.

    Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
    ---
    Since v3: reset buffer sequence number in start_streaming()
    ---
    drivers/media/platform/soc_camera/pxa_camera.c | 5 +++++
    1 file changed, 5 insertions(+)

    diff --git a/drivers/media/platform/soc_camera/pxa_camera.c b/drivers/media/platform/soc_camera/pxa_camera.c
    index 45583a40a4bd..9b294a14fa2e 100644
    --- a/drivers/media/platform/soc_camera/pxa_camera.c
    +++ b/drivers/media/platform/soc_camera/pxa_camera.c
    @@ -223,6 +223,7 @@ struct pxa_camera_dev {
    struct list_head capture;

    spinlock_t lock;
    + unsigned int buf_sequence;

    struct pxa_buffer *active;
    struct tasklet_struct task_eof;
    @@ -423,10 +424,13 @@ static void pxa_camera_wakeup(struct pxa_camera_dev *pcdev,
    struct pxa_buffer *buf)
    {
    struct vb2_buffer *vb = &buf->vbuf.vb2_buf;
    + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);

    /* _init is used to debug races, see comment in pxa_camera_reqbufs() */
    list_del_init(&buf->queue);
    vb->timestamp = ktime_get_ns();
    + vbuf->sequence = pcdev->buf_sequence++;
    + vbuf->field = V4L2_FIELD_NONE;
    vb2_buffer_done(vb, VB2_BUF_STATE_DONE);
    dev_dbg(pcdev_to_dev(pcdev), "%s dequeud buffer (buf=0x%p)\n",
    __func__, buf);
    @@ -1022,6 +1026,7 @@ static int pxac_vb2_start_streaming(struct vb2_queue *vq, unsigned int count)
    dev_dbg(pcdev_to_dev(pcdev), "%s(count=%d) active=%p\n",
    __func__, count, pcdev->active);

    + pcdev->buf_sequence = 0;
    if (!pcdev->active)
    pxa_camera_start_capture(pcdev);

    --
    2.1.4
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