Add sequence numbers to completed buffers.

Signed-off-by: Robert Jarzmik <robert.jarz...@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 f3922a99405b..2471d036a835 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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