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[DeviceDrivers] fix the compiling warning.

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This commit is contained in:
BernardXiong 2017-12-31 14:45:43 +08:00
parent 992e10ae08
commit 8246da645d
1 changed files with 10 additions and 2 deletions
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12
components/drivers/src/pipe.c
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@ -360,7 +360,11 @@ rt_size_t rt_pipe_read (rt_device_t device, rt_off_t pos, void *buffer, rt_siz
int read_bytes = 0;
rt_pipe_t *pipe = (rt_pipe_t *)device;
if (device == RT_NULL) return -EINVAL;
if (device == RT_NULL)
{
rt_set_errno(-EINVAL);
return 0;
}
if (count == 0) return 0;
pbuf = (uint8_t*)buffer;
@ -384,7 +388,11 @@ rt_size_t rt_pipe_write (rt_device_t device, rt_off_t pos, const void *buffer,
int write_bytes = 0;
rt_pipe_t *pipe = (rt_pipe_t *)device;
if (device == RT_NULL) return -EINVAL;
if (device == RT_NULL)
{
rt_set_errno(-EINVAL);
return 0;
}
if (count == 0) return 0;
pbuf = (uint8_t*)buffer;