From: Hans Verkuil <hans.verk...@cisco.com>
Set the first time a buffer from a request is queued to vb2.
Cleared when the queue is canceled.
Signed-off-by: Hans Verkuil <hans.verk...@cisco.com>
---
drivers/media/common/videobuf2/videobuf2-core.c | 2 ++
include/media/videobuf2-core.h | 3 +++
2 files changed, 5 insertions(+)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c
b/drivers/media/common/videobuf2/videobuf2-core.c
index 697765e70fbe..ec76dcb130fe 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -1500,6 +1500,7 @@ int vb2_core_qbuf(struct vb2_queue *q, unsigned int
index, void *pb,
if (ret)
return ret;
+ q->uses_requests = 1;
vb->state = VB2_BUF_STATE_IN_REQUEST;
/* Fill buffer information for the userspace */
if (pb) {
@@ -1813,6 +1814,7 @@ static void __vb2_queue_cancel(struct vb2_queue *q)
q->start_streaming_called = 0;
q->queued_count = 0;
q->error = 0;
+ q->uses_requests = 0;
/*
* Remove all buffers from videobuf's list...
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index cad712403d14..67553180d98f 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -468,6 +468,8 @@ struct vb2_buf_ops {
* @quirk_poll_must_check_waiting_for_buffers: Return %EPOLLERR at poll when
QBUF
* has not been called. This is a vb1 idiom that has been adopted
* also by vb2.
+ * @uses_requests: requests are used for this queue. Set to 1 the first time
+ * a request is queued. Set to 0 when the queue is canceled.
* @lock: pointer to a mutex that protects the &struct vb2_queue. The
* driver can set this to a mutex to let the v4l2 core serialize
* the queuing ioctls. If the driver wants to handle locking
@@ -535,6 +537,7 @@ struct vb2_queue {
unsigned fileio_write_immediately:1;
unsigned allow_zero_bytesused:1;
unsigned quirk_poll_must_check_waiting_for_buffers:1;
+ unsigned uses_requests:1;
struct mutex *lock;
void *owner;
--
2.17.0
