From: Hans Verkuil <hans.verkuil@xxxxxxxxx>
The buf_finish op should always work, so change the return type to void.
Update the few drivers that use it. Note that buf_finish can be called
both when the DMA is streaming and when it isn't (during queue_cancel).
Update drivers to check that where appropriate.
Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
---
drivers/media/parport/bw-qcam.c | 6 ++++--
drivers/media/pci/sta2x11/sta2x11_vip.c | 7 +++----
drivers/media/platform/marvell-ccic/mcam-core.c | 3 +--
drivers/media/usb/pwc/pwc-if.c | 16 +++++++++-------
drivers/media/usb/uvc/uvc_queue.c | 6 +++---
drivers/staging/media/go7007/go7007-v4l2.c | 3 +--
include/media/videobuf2-core.h | 2 +-
7 files changed, 22 insertions(+), 21 deletions(-)
diff --git a/drivers/media/parport/bw-qcam.c b/drivers/media/parport/bw-qcam.c
index d12bd33..8d69bfb 100644
--- a/drivers/media/parport/bw-qcam.c
+++ b/drivers/media/parport/bw-qcam.c
@@ -667,13 +667,16 @@ static void buffer_queue(struct vb2_buffer *vb)
vb2_buffer_done(vb, VB2_BUF_STATE_DONE);
}
-static int buffer_finish(struct vb2_buffer *vb)
+static void buffer_finish(struct vb2_buffer *vb)
{
struct qcam *qcam = vb2_get_drv_priv(vb->vb2_queue);
void *vbuf = vb2_plane_vaddr(vb, 0);
int size = vb->vb2_queue->plane_sizes[0];
int len;
+ if (!vb2_is_streaming(vb->vb2_queue))
+ return;
+
mutex_lock(&qcam->lock);
parport_claim_or_block(qcam->pdev);
@@ -691,7 +694,6 @@ static int buffer_finish(struct vb2_buffer *vb)
if (len != size)
vb->state = VB2_BUF_STATE_ERROR;
vb2_set_plane_payload(vb, 0, len);
- return 0;
}
static struct vb2_ops qcam_video_qops = {
diff --git a/drivers/media/pci/sta2x11/sta2x11_vip.c b/drivers/media/pci/sta2x11/sta2x11_vip.c
index e5cfb6c..bb11443 100644
--- a/drivers/media/pci/sta2x11/sta2x11_vip.c
+++ b/drivers/media/pci/sta2x11/sta2x11_vip.c
@@ -327,7 +327,7 @@ static void buffer_queue(struct vb2_buffer *vb)
}
spin_unlock(&vip->lock);
}
-static int buffer_finish(struct vb2_buffer *vb)
+static void buffer_finish(struct vb2_buffer *vb)
{
struct sta2x11_vip *vip = vb2_get_drv_priv(vb->vb2_queue);
struct vip_buffer *vip_buf = to_vip_buffer(vb);
@@ -337,9 +337,8 @@ static int buffer_finish(struct vb2_buffer *vb)
list_del_init(&vip_buf->list);
spin_unlock(&vip->lock);
- vip_active_buf_next(vip);
-
- return 0;
+ if (vb2_is_streaming(vb->vb2_queue))
+ vip_active_buf_next(vip);
}
static int start_streaming(struct vb2_queue *vq, unsigned int count)
diff --git a/drivers/media/platform/marvell-ccic/mcam-core.c b/drivers/media/platform/marvell-ccic/mcam-core.c
index 32fab30..8b34c48 100644
--- a/drivers/media/platform/marvell-ccic/mcam-core.c
+++ b/drivers/media/platform/marvell-ccic/mcam-core.c
@@ -1238,7 +1238,7 @@ static int mcam_vb_sg_buf_prepare(struct vb2_buffer *vb)
return 0;
}
-static int mcam_vb_sg_buf_finish(struct vb2_buffer *vb)
+static void mcam_vb_sg_buf_finish(struct vb2_buffer *vb)
{
struct mcam_camera *cam = vb2_get_drv_priv(vb->vb2_queue);
struct sg_table *sg_table = vb2_dma_sg_plane_desc(vb, 0);
@@ -1246,7 +1246,6 @@ static int mcam_vb_sg_buf_finish(struct vb2_buffer *vb)
if (sg_table)
dma_unmap_sg(cam->dev, sg_table->sgl,
sg_table->nents, DMA_FROM_DEVICE);
- return 0;
}
static void mcam_vb_sg_buf_cleanup(struct vb2_buffer *vb)
diff --git a/drivers/media/usb/pwc/pwc-if.c b/drivers/media/usb/pwc/pwc-if.c
index abf365a..b9c9f10 100644
--- a/drivers/media/usb/pwc/pwc-if.c
+++ b/drivers/media/usb/pwc/pwc-if.c
@@ -614,17 +614,19 @@ static int buffer_prepare(struct vb2_buffer *vb)
return 0;
}
-static int buffer_finish(struct vb2_buffer *vb)
+static void buffer_finish(struct vb2_buffer *vb)
{
struct pwc_device *pdev = vb2_get_drv_priv(vb->vb2_queue);
struct pwc_frame_buf *buf = container_of(vb, struct pwc_frame_buf, vb);
- /*
- * Application has called dqbuf and is getting back a buffer we've
- * filled, take the pwc data we've stored in buf->data and decompress
- * it into a usable format, storing the result in the vb2_buffer
- */
- return pwc_decompress(pdev, buf);
+ if (vb->state == VB2_BUF_STATE_DONE) {
+ /*
+ * Application has called dqbuf and is getting back a buffer we've
+ * filled, take the pwc data we've stored in buf->data and decompress
+ * it into a usable format, storing the result in the vb2_buffer
+ */
+ pwc_decompress(pdev, buf);
+ }
}
static void buffer_cleanup(struct vb2_buffer *vb)
diff --git a/drivers/media/usb/uvc/uvc_queue.c b/drivers/media/usb/uvc/uvc_queue.c
index cd962be..db5984e 100644
--- a/drivers/media/usb/uvc/uvc_queue.c
+++ b/drivers/media/usb/uvc/uvc_queue.c
@@ -104,15 +104,15 @@ static void uvc_buffer_queue(struct vb2_buffer *vb)
spin_unlock_irqrestore(&queue->irqlock, flags);
}
-static int uvc_buffer_finish(struct vb2_buffer *vb)
+static void uvc_buffer_finish(struct vb2_buffer *vb)
{
struct uvc_video_queue *queue = vb2_get_drv_priv(vb->vb2_queue);
struct uvc_streaming *stream =
container_of(queue, struct uvc_streaming, queue);
struct uvc_buffer *buf = container_of(vb, struct uvc_buffer, buf);
- uvc_video_clock_update(stream, &vb->v4l2_buf, buf);
- return 0;
+ if (vb2_is_streaming(vb->vb2_queue))
+ uvc_video_clock_update(stream, &vb->v4l2_buf, buf);
}
static void uvc_wait_prepare(struct vb2_queue *vq)
diff --git a/drivers/staging/media/go7007/go7007-v4l2.c b/drivers/staging/media/go7007/go7007-v4l2.c
index edc52e2..3a01576 100644
--- a/drivers/staging/media/go7007/go7007-v4l2.c
+++ b/drivers/staging/media/go7007/go7007-v4l2.c
@@ -470,7 +470,7 @@ static int go7007_buf_prepare(struct vb2_buffer *vb)
return 0;
}
-static int go7007_buf_finish(struct vb2_buffer *vb)
+static void go7007_buf_finish(struct vb2_buffer *vb)
{
struct vb2_queue *vq = vb->vb2_queue;
struct go7007 *go = vb2_get_drv_priv(vq);
@@ -483,7 +483,6 @@ static int go7007_buf_finish(struct vb2_buffer *vb)
V4L2_BUF_FLAG_PFRAME);
buf->flags |= frame_type_flag;
buf->field = V4L2_FIELD_NONE;
- return 0;
}
static int go7007_start_streaming(struct vb2_queue *q, unsigned int count)
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index f04eb28..f443ce0 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -311,7 +311,7 @@ struct vb2_ops {
int (*buf_init)(struct vb2_buffer *vb);
int (*buf_prepare)(struct vb2_buffer *vb);
- int (*buf_finish)(struct vb2_buffer *vb);
+ void (*buf_finish)(struct vb2_buffer *vb);
void (*buf_cleanup)(struct vb2_buffer *vb);
int (*start_streaming)(struct vb2_queue *q, unsigned int count);
--
1.8.5.2
--
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