[DeviceDrivers] Fix pipe memory issue.
static int pipe_fops_open(struct dfs_fd *fd)
{
+ int rc = 0;
rt_device_t device;
rt_pipe_t *pipe;
@@ -31,6 +32,11 @@ static int pipe_fops_open(struct dfs_fd *fd)
if (device->ref_count == 0)
{
pipe->fifo = rt_ringbuffer_create(pipe->bufsz);
+ if (pipe->fifo == RT_NULL)
+ {
+ rc = -RT_ENOMEM;
+ goto __exit;
+ }
}
switch (fd->flags & O_ACCMODE)
@@ -48,9 +54,10 @@ static int pipe_fops_open(struct dfs_fd *fd)
}
device->ref_count ++;
+__exit:
rt_mutex_release(&(pipe->lock));
- return 0;
+ return rc;
}
static int pipe_fops_close(struct dfs_fd *fd)
@@ -90,6 +97,7 @@ static int pipe_fops_close(struct dfs_fd *fd)
if (device->ref_count == 1)
{
+ if (pipe->fifo != RT_NULL)
rt_ringbuffer_destroy(pipe->fifo);
pipe->fifo = RT_NULL;
}
