+/* Videobuf2 ioctl helpers */
+
+int v4l2_m2m_ioctl_reqbufs(struct file *file, void *priv,
+ struct v4l2_requestbuffers *rb)
+{
+ struct v4l2_fh *fh = file->private_data;
+
+ return v4l2_m2m_reqbufs(file, fh->m2m_ctx, rb);
+}
+EXPORT_SYMBOL_GPL(v4l2_m2m_ioctl_reqbufs);
+
+int v4l2_m2m_ioctl_create_bufs(struct file *file, void *priv,
+ struct v4l2_create_buffers *create)
+{
+ struct v4l2_fh *fh = file->private_data;
+
+ return v4l2_m2m_create_bufs(file, fh->m2m_ctx, create);
+}
+EXPORT_SYMBOL_GPL(v4l2_m2m_ioctl_create_bufs);
+
+int v4l2_m2m_ioctl_querybuf(struct file *file, void *priv,
+ struct v4l2_buffer *buf)
+{
+ struct v4l2_fh *fh = file->private_data;
+
+ return v4l2_m2m_querybuf(file, fh->m2m_ctx, buf);
+}
+EXPORT_SYMBOL_GPL(v4l2_m2m_ioctl_querybuf);
+
+int v4l2_m2m_ioctl_qbuf(struct file *file, void *priv,
+ struct v4l2_buffer *buf)
+{
+ struct v4l2_fh *fh = file->private_data;
+
+ return v4l2_m2m_qbuf(file, fh->m2m_ctx, buf);
+}
+EXPORT_SYMBOL_GPL(v4l2_m2m_ioctl_qbuf);
+
+int v4l2_m2m_ioctl_dqbuf(struct file *file, void *priv,
+ struct v4l2_buffer *buf)
+{
+ struct v4l2_fh *fh = file->private_data;
+
+ return v4l2_m2m_dqbuf(file, fh->m2m_ctx, buf);
+}
+EXPORT_SYMBOL_GPL(v4l2_m2m_ioctl_dqbuf);
+
+int v4l2_m2m_ioctl_expbuf(struct file *file, void *priv,
+ struct v4l2_exportbuffer *eb)
+{
+ struct v4l2_fh *fh = file->private_data;
+
+ return v4l2_m2m_expbuf(file, fh->m2m_ctx, eb);
+}
+EXPORT_SYMBOL_GPL(v4l2_m2m_ioctl_expbuf);
+
+int v4l2_m2m_ioctl_streamon(struct file *file, void *priv,
+ enum v4l2_buf_type type)
+{
+ struct v4l2_fh *fh = file->private_data;
+
+ return v4l2_m2m_streamon(file, fh->m2m_ctx, type);
+}
+EXPORT_SYMBOL_GPL(v4l2_m2m_ioctl_streamon);
+
+int v4l2_m2m_ioctl_streamoff(struct file *file, void *priv,
+ enum v4l2_buf_type type)
+{
+ struct v4l2_fh *fh = file->private_data;
+
+ return v4l2_m2m_streamoff(file, fh->m2m_ctx, type);
+}
+EXPORT_SYMBOL_GPL(v4l2_m2m_ioctl_streamoff);
+
+/*
+ * v4l2_file_operations helpers. It is assumed here same lock is used
+ * for the output and the capture buffer queue.
+ */
+
+int v4l2_m2m_fop_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ struct v4l2_fh *fh = file->private_data;
+ struct v4l2_m2m_ctx *m2m_ctx = fh->m2m_ctx;
+ int ret;
+
+ if (m2m_ctx->q_lock && mutex_lock_interruptible(m2m_ctx->q_lock))
+ return -ERESTARTSYS;
+
+ ret = v4l2_m2m_mmap(file, m2m_ctx, vma);
+
+ if (m2m_ctx->q_lock)
+ mutex_unlock(m2m_ctx->q_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(v4l2_m2m_fop_mmap);
+
+unsigned int v4l2_m2m_fop_poll(struct file *file, poll_table *wait)
+{
+ struct v4l2_fh *fh = file->private_data;
+ struct v4l2_m2m_ctx *m2m_ctx = fh->m2m_ctx;
+ unsigned int ret;
+
+ if (m2m_ctx->q_lock)
+ mutex_lock(m2m_ctx->q_lock);
+
+ ret = v4l2_m2m_poll(file, m2m_ctx, wait);
+
+ if (m2m_ctx->q_lock)
+ mutex_unlock(m2m_ctx->q_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(v4l2_m2m_fop_poll);
+