[BSP] change the type of cmd.

1. Change the type of cmd to 'int';
2. Remove RT_LWIP_USING_RT_MEM macro;

1 files changed, 1 insertions, 1 deletions

diff --git a/libcpu/xilinx/microblaze/serial.c b/libcpu/xilinx/microblaze/serial.c
index cd73051f61..17cca9f84d 100755
--- a/libcpu/xilinx/microblaze/serial.c
+++ b/libcpu/xilinx/microblaze/serial.c
@@ -266,7 +266,7 @@ static rt_size_t rt_serial_write (rt_device_t dev, rt_off_t pos, const void* buf
 	return (rt_size_t)ptr - (rt_size_t)buffer;
 }
 
-static rt_err_t rt_serial_control (rt_device_t dev, rt_uint8_t cmd, void *args)
+static rt_err_t rt_serial_control (rt_device_t dev, int cmd, void *args)
 {
 	return RT_EOK;
 }