diff options
| -rw-r--r-- | drivers/media/common/videobuf2/videobuf2-core.c | 13 | ||||
| -rw-r--r-- | drivers/media/common/videobuf2/videobuf2-v4l2.c | 112 | ||||
| -rw-r--r-- | drivers/media/platform/omap3isp/ispvideo.c | 2 | ||||
| -rw-r--r-- | drivers/media/platform/s3c-camif/camif-capture.c | 4 | ||||
| -rw-r--r-- | drivers/media/platform/s5p-mfc/s5p_mfc_dec.c | 4 | ||||
| -rw-r--r-- | drivers/media/platform/s5p-mfc/s5p_mfc_enc.c | 4 | ||||
| -rw-r--r-- | drivers/media/platform/soc_camera/soc_camera.c | 4 | ||||
| -rw-r--r-- | drivers/media/usb/uvc/uvc_queue.c | 5 | ||||
| -rw-r--r-- | drivers/media/usb/uvc/uvc_v4l2.c | 3 | ||||
| -rw-r--r-- | drivers/media/usb/uvc/uvcvideo.h | 1 | ||||
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-mem2mem.c | 6 | ||||
| -rw-r--r-- | drivers/staging/media/davinci_vpfe/vpfe_video.c | 3 | ||||
| -rw-r--r-- | drivers/staging/media/omap4iss/iss_video.c | 3 | ||||
| -rw-r--r-- | drivers/usb/gadget/function/uvc_queue.c | 2 | ||||
| -rw-r--r-- | include/media/videobuf2-v4l2.h | 14 |
15 files changed, 148 insertions, 32 deletions
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c index a6f4e9ac77b0..16c9a08192cf 100644 --- a/drivers/media/common/videobuf2/videobuf2-core.c +++ b/drivers/media/common/videobuf2/videobuf2-core.c @@ -1338,6 +1338,14 @@ static void vb2_req_queue(struct media_request_object *obj) mutex_unlock(vb->vb2_queue->lock); } +static void vb2_req_unbind(struct media_request_object *obj) +{ + struct vb2_buffer *vb = container_of(obj, struct vb2_buffer, req_obj); + + if (vb->state == VB2_BUF_STATE_IN_REQUEST) + call_void_bufop(vb->vb2_queue, init_buffer, vb); +} + static void vb2_req_release(struct media_request_object *obj) { struct vb2_buffer *vb = container_of(obj, struct vb2_buffer, req_obj); @@ -1350,6 +1358,7 @@ static const struct media_request_object_ops vb2_core_req_ops = { .prepare = vb2_req_prepare, .unprepare = vb2_req_unprepare, .queue = vb2_req_queue, + .unbind = vb2_req_unbind, .release = vb2_req_release, }; @@ -1481,8 +1490,10 @@ int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb, vb->state = VB2_BUF_STATE_IN_REQUEST; /* Fill buffer information for the userspace */ - if (pb) + if (pb) { + call_void_bufop(q, copy_timestamp, vb, pb); call_void_bufop(q, fill_user_buffer, vb, pb); + } dprintk(2, "qbuf of buffer %d succeeded\n", vb->index); return 0; diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c index ea9db4b3f59a..9c652afa62ab 100644 --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c @@ -25,6 +25,7 @@ #include <linux/kthread.h> #include <media/v4l2-dev.h> +#include <media/v4l2-device.h> #include <media/v4l2-fh.h> #include <media/v4l2-event.h> #include <media/v4l2-common.h> @@ -40,10 +41,12 @@ module_param(debug, int, 0644); pr_info("vb2-v4l2: %s: " fmt, __func__, ## arg); \ } while (0) -/* Flags that are set by the vb2 core */ +/* Flags that are set by us */ #define V4L2_BUFFER_MASK_FLAGS (V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_QUEUED | \ V4L2_BUF_FLAG_DONE | V4L2_BUF_FLAG_ERROR | \ V4L2_BUF_FLAG_PREPARED | \ + V4L2_BUF_FLAG_IN_REQUEST | \ + V4L2_BUF_FLAG_REQUEST_FD | \ V4L2_BUF_FLAG_TIMESTAMP_MASK) /* Output buffer flags that should be passed on to the driver */ #define V4L2_BUFFER_OUT_FLAGS (V4L2_BUF_FLAG_PFRAME | V4L2_BUF_FLAG_BFRAME | \ @@ -118,6 +121,16 @@ static int __verify_length(struct vb2_buffer *vb, const struct v4l2_buffer *b) return 0; } +/* + * __init_v4l2_vb2_buffer() - initialize the v4l2_vb2_buffer struct + */ +static void __init_v4l2_vb2_buffer(struct vb2_buffer *vb) +{ + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + + vbuf->request_fd = -1; +} + static void __copy_timestamp(struct vb2_buffer *vb, const void *pb) { const struct v4l2_buffer *b = pb; @@ -181,6 +194,7 @@ static int vb2_fill_vb2_v4l2_buffer(struct vb2_buffer *vb, struct v4l2_buffer *b return -EINVAL; } vbuf->sequence = 0; + vbuf->request_fd = -1; if (V4L2_TYPE_IS_MULTIPLANAR(b->type)) { switch (b->memory) { @@ -318,9 +332,12 @@ static int vb2_fill_vb2_v4l2_buffer(struct vb2_buffer *vb, struct v4l2_buffer *b return 0; } -static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct v4l2_buffer *b, - const char *opname) +static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *mdev, + struct v4l2_buffer *b, + const char *opname, + struct media_request **p_req) { + struct media_request *req; struct vb2_v4l2_buffer *vbuf; struct vb2_buffer *vb; int ret; @@ -357,8 +374,60 @@ static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct v4l2_buffer *b, memset(vbuf->planes, 0, sizeof(vbuf->planes[0]) * vb->num_planes); ret = vb2_fill_vb2_v4l2_buffer(vb, b); + if (ret) + return ret; } - return ret; + + if (!(b->flags & V4L2_BUF_FLAG_REQUEST_FD)) + return 0; + + /* + * For proper locking when queueing a request you need to be able + * to lock access to the vb2 queue, so check that there is a lock + * that we can use. In addition p_req must be non-NULL. + */ + if (WARN_ON(!q->lock || !p_req)) + return -EINVAL; + + /* + * Make sure this op is implemented by the driver. It's easy to forget + * this callback, but is it important when canceling a buffer in a + * queued request. + */ + if (WARN_ON(!q->ops->buf_request_complete)) + return -EINVAL; + + if (vb->state != VB2_BUF_STATE_DEQUEUED) { + dprintk(1, "%s: buffer is not in dequeued state\n", opname); + return -EINVAL; + } + + if (b->request_fd < 0) { + dprintk(1, "%s: request_fd < 0\n", opname); + return -EINVAL; + } + + req = media_request_get_by_fd(mdev, b->request_fd); + if (IS_ERR(req)) { + dprintk(1, "%s: invalid request_fd\n", opname); + return PTR_ERR(req); + } + + /* + * Early sanity check. This is checked again when the buffer + * is bound to the request in vb2_core_qbuf(). + */ + if (req->state != MEDIA_REQUEST_STATE_IDLE && + req->state != MEDIA_REQUEST_STATE_UPDATING) { + dprintk(1, "%s: request is not idle\n", opname); + media_request_put(req); + return -EBUSY; + } + + *p_req = req; + vbuf->request_fd = b->request_fd; + + return 0; } /* @@ -442,6 +511,7 @@ static void __fill_v4l2_buffer(struct vb2_buffer *vb, void *pb) b->flags |= V4L2_BUF_FLAG_QUEUED; break; case VB2_BUF_STATE_IN_REQUEST: + b->flags |= V4L2_BUF_FLAG_IN_REQUEST; break; case VB2_BUF_STATE_ERROR: b->flags |= V4L2_BUF_FLAG_ERROR; @@ -456,11 +526,17 @@ static void __fill_v4l2_buffer(struct vb2_buffer *vb, void *pb) break; } - if (vb->state == VB2_BUF_STATE_DEQUEUED && vb->synced && vb->prepared) + if ((vb->state == VB2_BUF_STATE_DEQUEUED || + vb->state == VB2_BUF_STATE_IN_REQUEST) && + vb->synced && vb->prepared) b->flags |= V4L2_BUF_FLAG_PREPARED; if (vb2_buffer_in_use(q, vb)) b->flags |= V4L2_BUF_FLAG_MAPPED; + if (vbuf->request_fd >= 0) { + b->flags |= V4L2_BUF_FLAG_REQUEST_FD; + b->request_fd = vbuf->request_fd; + } if (!q->is_output && b->flags & V4L2_BUF_FLAG_DONE && @@ -494,6 +570,7 @@ static int __fill_vb2_buffer(struct vb2_buffer *vb, struct vb2_plane *planes) static const struct vb2_buf_ops v4l2_buf_ops = { .verify_planes_array = __verify_planes_array_core, + .init_buffer = __init_v4l2_vb2_buffer, .fill_user_buffer = __fill_v4l2_buffer, .fill_vb2_buffer = __fill_vb2_buffer, .copy_timestamp = __copy_timestamp, @@ -542,7 +619,8 @@ int vb2_reqbufs(struct vb2_queue *q, struct v4l2_requestbuffers *req) } EXPORT_SYMBOL_GPL(vb2_reqbufs); -int vb2_prepare_buf(struct vb2_queue *q, struct v4l2_buffer *b) +int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev, + struct v4l2_buffer *b) { int ret; @@ -551,7 +629,10 @@ int vb2_prepare_buf(struct vb2_queue *q, struct v4l2_buffer *b) return -EBUSY; } - ret = vb2_queue_or_prepare_buf(q, b, "prepare_buf"); + if (b->flags & V4L2_BUF_FLAG_REQUEST_FD) + return -EINVAL; + + ret = vb2_queue_or_prepare_buf(q, mdev, b, "prepare_buf", NULL); return ret ? ret : vb2_core_prepare_buf(q, b->index, b); } @@ -611,8 +692,10 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create) } EXPORT_SYMBOL_GPL(vb2_create_bufs); -int vb2_qbuf(struct vb2_queue *q, struct v4l2_buffer *b) +int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev, + struct v4l2_buffer *b) { + struct media_request *req = NULL; int ret; if (vb2_fileio_is_active(q)) { @@ -620,8 +703,13 @@ int vb2_qbuf(struct vb2_queue *q, struct v4l2_buffer *b) return -EBUSY; } - ret = vb2_queue_or_prepare_buf(q, b, "qbuf"); - return ret ? ret : vb2_core_qbuf(q, b->index, b, NULL); + ret = vb2_queue_or_prepare_buf(q, mdev, b, "qbuf", &req); + if (ret) + return ret; + ret = vb2_core_qbuf(q, b->index, b, req); + if (req) + media_request_put(req); + return ret; } EXPORT_SYMBOL_GPL(vb2_qbuf); @@ -811,7 +899,7 @@ int vb2_ioctl_prepare_buf(struct file *file, void *priv, if (vb2_queue_is_busy(vdev, file)) return -EBUSY; - return vb2_prepare_buf(vdev->queue, p); + return vb2_prepare_buf(vdev->queue, vdev->v4l2_dev->mdev, p); } EXPORT_SYMBOL_GPL(vb2_ioctl_prepare_buf); @@ -830,7 +918,7 @@ int vb2_ioctl_qbuf(struct file *file, void *priv, struct v4l2_buffer *p) if (vb2_queue_is_busy(vdev, file)) return -EBUSY; - return vb2_qbuf(vdev->queue, p); + return vb2_qbuf(vdev->queue, vdev->v4l2_dev->mdev, p); } EXPORT_SYMBOL_GPL(vb2_ioctl_qbuf); diff --git a/drivers/media/platform/omap3isp/ispvideo.c b/drivers/media/platform/omap3isp/ispvideo.c index 674e7fd3ad99..1de7b6b13f67 100644 --- a/drivers/media/platform/omap3isp/ispvideo.c +++ b/drivers/media/platform/omap3isp/ispvideo.c @@ -940,7 +940,7 @@ isp_video_qbuf(struct file *file, void *fh, struct v4l2_buffer *b) int ret; mutex_lock(&video->queue_lock); - ret = vb2_qbuf(&vfh->queue, b); + ret = vb2_qbuf(&vfh->queue, video->video.v4l2_dev->mdev, b); mutex_unlock(&video->queue_lock); return ret; diff --git a/drivers/media/platform/s3c-camif/camif-capture.c b/drivers/media/platform/s3c-camif/camif-capture.c index c02dce8b4c6c..9de663990361 100644 --- a/drivers/media/platform/s3c-camif/camif-capture.c +++ b/drivers/media/platform/s3c-camif/camif-capture.c @@ -943,7 +943,7 @@ static int s3c_camif_qbuf(struct file *file, void *priv, if (vp->owner && vp->owner != priv) return -EBUSY; - return vb2_qbuf(&vp->vb_queue, buf); + return vb2_qbuf(&vp->vb_queue, vp->vdev.v4l2_dev->mdev, buf); } static int s3c_camif_dqbuf(struct file *file, void *priv, @@ -981,7 +981,7 @@ static int s3c_camif_prepare_buf(struct file *file, void *priv, struct v4l2_buffer *b) { struct camif_vp *vp = video_drvdata(file); - return vb2_prepare_buf(&vp->vb_queue, b); + return vb2_prepare_buf(&vp->vb_queue, vp->vdev.v4l2_dev->mdev, b); } static int s3c_camif_g_selection(struct file *file, void *priv, diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_dec.c b/drivers/media/platform/s5p-mfc/s5p_mfc_dec.c index 6a3cc4f86c5d..fc0b61f1b91d 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc_dec.c +++ b/drivers/media/platform/s5p-mfc/s5p_mfc_dec.c @@ -632,9 +632,9 @@ static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) return -EIO; } if (buf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) - return vb2_qbuf(&ctx->vq_src, buf); + return vb2_qbuf(&ctx->vq_src, NULL, buf); else if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) - return vb2_qbuf(&ctx->vq_dst, buf); + return vb2_qbuf(&ctx->vq_dst, NULL, buf); return -EINVAL; } diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c b/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c index 3ad4f5073002..9208c83aa377 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c +++ b/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c @@ -1621,9 +1621,9 @@ static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) mfc_err("Call on QBUF after EOS command\n"); return -EIO; } - return vb2_qbuf(&ctx->vq_src, buf); + return vb2_qbuf(&ctx->vq_src, NULL, buf); } else if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) { - return vb2_qbuf(&ctx->vq_dst, buf); + return vb2_qbuf(&ctx->vq_dst, NULL, buf); } return -EINVAL; } diff --git a/drivers/media/platform/soc_camera/soc_camera.c b/drivers/media/platform/soc_camera/soc_camera.c index 901c07f49351..4572fea38d0b 100644 --- a/drivers/media/platform/soc_camera/soc_camera.c +++ b/drivers/media/platform/soc_camera/soc_camera.c @@ -394,7 +394,7 @@ static int soc_camera_qbuf(struct file *file, void *priv, if (icd->streamer != file) return -EBUSY; - return vb2_qbuf(&icd->vb2_vidq, p); + return vb2_qbuf(&icd->vb2_vidq, NULL, p); } static int soc_camera_dqbuf(struct file *file, void *priv, @@ -430,7 +430,7 @@ static int soc_camera_prepare_buf(struct file *file, void *priv, { struct soc_camera_device *icd = file->private_data; - return vb2_prepare_buf(&icd->vb2_vidq, b); + return vb2_prepare_buf(&icd->vb2_vidq, NULL, b); } static int soc_camera_expbuf(struct file *file, void *priv, diff --git a/drivers/media/usb/uvc/uvc_queue.c b/drivers/media/usb/uvc/uvc_queue.c index fecccb5e7628..8964e16f2b22 100644 --- a/drivers/media/usb/uvc/uvc_queue.c +++ b/drivers/media/usb/uvc/uvc_queue.c @@ -300,12 +300,13 @@ int uvc_create_buffers(struct uvc_video_queue *queue, return ret; } -int uvc_queue_buffer(struct uvc_video_queue *queue, struct v4l2_buffer *buf) +int uvc_queue_buffer(struct uvc_video_queue *queue, + struct media_device *mdev, struct v4l2_buffer *buf) { int ret; mutex_lock(&queue->mutex); - ret = vb2_qbuf(&queue->queue, buf); + ret = vb2_qbuf(&queue->queue, mdev, buf); mutex_unlock(&queue->mutex); return ret; diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c index 18a7384b50ee..0a2b8ea8a4ff 100644 --- a/drivers/media/usb/uvc/uvc_v4l2.c +++ b/drivers/media/usb/uvc/uvc_v4l2.c @@ -751,7 +751,8 @@ static int uvc_ioctl_qbuf(struct file *file, void *fh, struct v4l2_buffer *buf) if (!uvc_has_privileges(handle)) return -EBUSY; - return uvc_queue_buffer(&stream->queue, buf); + return uvc_queue_buffer(&stream->queue, + stream->vdev.v4l2_dev->mdev, buf); } static int uvc_ioctl_expbuf(struct file *file, void *fh, diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h index e5f5d84f1d1d..8b7bb89f12df 100644 --- a/drivers/media/usb/uvc/uvcvideo.h +++ b/drivers/media/usb/uvc/uvcvideo.h @@ -694,6 +694,7 @@ int uvc_query_buffer(struct uvc_video_queue *queue, int uvc_create_buffers(struct uvc_video_queue *queue, struct v4l2_create_buffers *v4l2_cb); int uvc_queue_buffer(struct uvc_video_queue *queue, + struct media_device *mdev, struct v4l2_buffer *v4l2_buf); int uvc_export_buffer(struct uvc_video_queue *queue, struct v4l2_exportbuffer *exp); diff --git a/drivers/media/v4l2-core/v4l2-mem2mem.c b/drivers/media/v4l2-core/v4l2-mem2mem.c index ce9bd1b91210..4de8fa163fd3 100644 --- a/drivers/media/v4l2-core/v4l2-mem2mem.c +++ b/drivers/media/v4l2-core/v4l2-mem2mem.c @@ -473,11 +473,12 @@ EXPORT_SYMBOL_GPL(v4l2_m2m_querybuf); int v4l2_m2m_qbuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, struct v4l2_buffer *buf) { + struct video_device *vdev = video_devdata(file); struct vb2_queue *vq; int ret; vq = v4l2_m2m_get_vq(m2m_ctx, buf->type); - ret = vb2_qbuf(vq, buf); + ret = vb2_qbuf(vq, vdev->v4l2_dev->mdev, buf); if (!ret) v4l2_m2m_try_schedule(m2m_ctx); @@ -498,11 +499,12 @@ EXPORT_SYMBOL_GPL(v4l2_m2m_dqbuf); int v4l2_m2m_prepare_buf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, struct v4l2_buffer *buf) { + struct video_device *vdev = video_devdata(file); struct vb2_queue *vq; int ret; vq = v4l2_m2m_get_vq(m2m_ctx, buf->type); - ret = vb2_prepare_buf(vq, buf); + ret = vb2_prepare_buf(vq, vdev->v4l2_dev->mdev, buf); if (!ret) v4l2_m2m_try_schedule(m2m_ctx); diff --git a/drivers/staging/media/davinci_vpfe/vpfe_video.c b/drivers/staging/media/davinci_vpfe/vpfe_video.c index 4e3ec7fdc90d..6d693067a251 100644 --- a/drivers/staging/media/davinci_vpfe/vpfe_video.c +++ b/drivers/staging/media/davinci_vpfe/vpfe_video.c @@ -1425,7 +1425,8 @@ static int vpfe_qbuf(struct file *file, void *priv, return -EACCES; } - return vb2_qbuf(&video->buffer_queue, p); + return vb2_qbuf(&video->buffer_queue, + video->video_dev.v4l2_dev->mdev, p); } /* diff --git a/drivers/staging/media/omap4iss/iss_video.c b/drivers/staging/media/omap4iss/iss_video.c index 16478fe9e3f8..ccb50fea3314 100644 --- a/drivers/staging/media/omap4iss/iss_video.c +++ b/drivers/staging/media/omap4iss/iss_video.c @@ -806,9 +806,10 @@ iss_video_querybuf(struct file *file, void *fh, struct v4l2_buffer *b) static int iss_video_qbuf(struct file *file, void *fh, struct v4l2_buffer *b) { + struct iss_video *video = video_drvdata(file); struct iss_video_fh *vfh = to_iss_video_fh(fh); - return vb2_qbuf(&vfh->queue, b); + return vb2_qbuf(&vfh->queue, video->video.v4l2_dev->mdev, b); } static int diff --git a/drivers/usb/gadget/function/uvc_queue.c b/drivers/usb/gadget/function/uvc_queue.c index 9e33d5206d54..f2497cb96abb 100644 --- a/drivers/usb/gadget/function/uvc_queue.c +++ b/drivers/usb/gadget/function/uvc_queue.c @@ -166,7 +166,7 @@ int uvcg_queue_buffer(struct uvc_video_queue *queue, struct v4l2_buffer *buf) unsigned long flags; int ret; - ret = vb2_qbuf(&queue->queue, buf); + ret = vb2_qbuf(&queue->queue, NULL, buf); if (ret < 0) return ret; diff --git a/include/media/videobuf2-v4l2.h b/include/media/videobuf2-v4l2.h index 097bf3e6951d..91a2b3e1a642 100644 --- a/include/media/videobuf2-v4l2.h +++ b/include/media/videobuf2-v4l2.h @@ -32,6 +32,7 @@ * &enum v4l2_field. * @timecode: frame timecode. * @sequence: sequence count of this frame. + * @request_fd: the request_fd associated with this buffer * @planes: plane information (userptr/fd, length, bytesused, data_offset). * * Should contain enough information to be able to cover all the fields @@ -44,6 +45,7 @@ struct vb2_v4l2_buffer { __u32 field; struct v4l2_timecode timecode; __u32 sequence; + __s32 request_fd; struct vb2_plane planes[VB2_MAX_PLANES]; }; @@ -79,6 +81,7 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create); * vb2_prepare_buf() - Pass ownership of a buffer from userspace to the kernel * * @q: pointer to &struct vb2_queue with videobuf2 queue. + * @mdev: pointer to &struct media_device, may be NULL. * @b: buffer structure passed from userspace to * &v4l2_ioctl_ops->vidioc_prepare_buf handler in driver * @@ -90,15 +93,19 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create); * #) verifies the passed buffer, * #) calls &vb2_ops->buf_prepare callback in the driver (if provided), * in which driver-specific buffer initialization can be performed. + * #) if @b->request_fd is non-zero and @mdev->ops->req_queue is set, + * then bind the prepared buffer to the request. * * The return values from this function are intended to be directly returned * from &v4l2_ioctl_ops->vidioc_prepare_buf handler in driver. */ -int vb2_prepare_buf(struct vb2_queue *q, struct v4l2_buffer *b); +int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev, + struct v4l2_buffer *b); /** * vb2_qbuf() - Queue a buffer from userspace * @q: pointer to &struct vb2_queue with videobuf2 queue. + * @mdev: pointer to &struct media_device, may be NULL. * @b: buffer structure passed from userspace to * &v4l2_ioctl_ops->vidioc_qbuf handler in driver * @@ -107,6 +114,8 @@ int vb2_prepare_buf(struct vb2_queue *q, struct v4l2_buffer *b); * This function: * * #) verifies the passed buffer; + * #) if @b->request_fd is non-zero and @mdev->ops->req_queue is set, + * then bind the buffer to the request. * #) if necessary, calls &vb2_ops->buf_prepare callback in the driver * (if provided), in which driver-specific buffer initialization can * be performed; @@ -116,7 +125,8 @@ int vb2_prepare_buf(struct vb2_queue *q, struct v4l2_buffer *b); * The return values from this function are intended to be directly returned * from &v4l2_ioctl_ops->vidioc_qbuf handler in driver. */ -int vb2_qbuf(struct vb2_queue *q, struct v4l2_buffer *b); +int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev, + struct v4l2_buffer *b); /** * vb2_expbuf() - Export a buffer as a file descriptor |
