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Update pipe.c

This commit is contained in:
David Lin 2020-04-13 07:20:29 +08:00 committed by GitHub
parent ff09587d23
commit e9d930070d
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 10 additions and 4 deletions
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14
components/drivers/src/pipe.c
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@ -323,8 +323,14 @@ 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)
@ -332,14 +338,14 @@ rt_err_t rt_pipe_open (rt_device_t device, rt_uint16_t oflag)
pipe->fifo = rt_ringbuffer_create(pipe->bufsz);
if (pipe->fifo == RT_NULL)
{
rt_mutex_release(&(pipe->lock));
return -RT_ENOMEM;
ret = -RT_ENOMEM;
}
}
rt_mutex_release(&(pipe->lock));
return RT_EOK;
__exit:
return ret;
}
rt_err_t rt_pipe_close (rt_device_t device)