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Subject[PATCH v4 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 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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