diff --git a/components/drivers/src/pipe.c b/components/drivers/src/pipe.c index ae87b6f5f2..2a7e143f6c 100644 --- a/components/drivers/src/pipe.c +++ b/components/drivers/src/pipe.c @@ -323,18 +323,29 @@ static const struct dfs_file_ops pipe_fops = rt_err_t rt_pipe_open (rt_device_t device, rt_uint16_t oflag) { rt_pipe_t *pipe = (rt_pipe_t *)device; + rt_err_t ret = RT_EOK; - if (device == RT_NULL) return -RT_EINVAL; + if (device == RT_NULL) + { + ret = -RT_EINVAL; + goto __exit; + } + rt_mutex_take(&(pipe->lock), RT_WAITING_FOREVER); if (pipe->fifo == RT_NULL) { pipe->fifo = rt_ringbuffer_create(pipe->bufsz); + if (pipe->fifo == RT_NULL) + { + ret = -RT_ENOMEM; + } } rt_mutex_release(&(pipe->lock)); - return RT_EOK; +__exit: + return ret; } rt_err_t rt_pipe_close (rt_device_t device)