@@ -384,9 +384,8 @@ static int soc_camera_reqbufs(struct file *file, void *priv,
ret = vb2_reqbufs(&icd->vb2_vidq, p);
}
- if (!ret && !icd->streamer)
- icd->streamer = file;
-
+ if (!ret)
+ icd->streamer = p->count ? file : NULL;
return ret;
}
@@ -443,12 +442,19 @@ static int soc_camera_create_bufs(struct file *file, void *priv,
{
struct soc_camera_device *icd = file->private_data;
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ int ret;
/* videobuf2 only */
if (ici->ops->init_videobuf)
- return -EINVAL;
- else
- return vb2_create_bufs(&icd->vb2_vidq, create);
+ return -ENOTTY;
+
+ if (icd->streamer && icd->streamer != file)
+ return -EBUSY;
+
+ ret = vb2_create_bufs(&icd->vb2_vidq, create);
+ if (!ret)
+ icd->streamer = file;
+ return ret;
}
static int soc_camera_prepare_buf(struct file *file, void *priv,