[components/drivers] update pipe.c

DavidLin1577 · web-flow · commit ff09587d2381 · 2020-04-12T11:58:33.000+08:00
Fixed stackover flow bug when create pipe-&gt;fifo
diff --git a/components/drivers/src/pipe.c b/components/drivers/src/pipe.c
@@ -330,6 +330,11 @@ rt_err_t  rt_pipe_open (rt_device_t device, rt_uint16_t oflag)
     if (pipe->fifo == RT_NULL)
     {
         pipe->fifo = rt_ringbuffer_create(pipe->bufsz);
+        if (pipe->fifo == RT_NULL)
+        {
+            rt_mutex_release(&(pipe->lock));
+            return -RT_ENOMEM;
+        }
     }
 
     rt_mutex_release(&(pipe->lock));

Original file line number	Diff line number	Diff line change
`@@ -330,6 +330,11 @@ rt_err_t rt_pipe_open (rt_device_t device, rt_uint16_t oflag)`
`330`	`330`	`if (pipe->fifo == RT_NULL)`
`331`	`331`	`{`
`332`	`332`	`pipe->fifo = rt_ringbuffer_create(pipe->bufsz);`
	`333`	`+ if (pipe->fifo == RT_NULL)`
	`334`	`+ {`
	`335`	`+ rt_mutex_release(&(pipe->lock));`
	`336`	`+ return -RT_ENOMEM;`
	`337`	`+ }`
`333`	`338`	`}`
`334`	`339`
`335`	`340`	`rt_mutex_release(&(pipe->lock));`