Update serial.c

"remove #ifdef RT_SERIAL_USING_DMA in rt_serial_open， always check device open dma flag"

Update serial.c
"remove #ifdef RT_SERIAL_USING_DMA in rt_serial_open， always check device open dma flag"
e45d7da5 · 陈迎春 · GitHub · e9c80c3b · e45d7da5
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components/drivers/serial/serial.c components/drivers/serial/serial.c +0 -2

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--- a/components/drivers/serial/serial.c
+++ b/components/drivers/serial/serial.c
@@ -566,13 +566,11 @@ static rt_err_t rt_serial_open(struct rt_device *dev, rt_uint16_t oflag)

    LOG_D("open serial device: 0x%08x with open flag: 0x%04x",
        dev, oflag);
-#ifdef RT_SERIAL_USING_DMA
    /* check device flag with the open flag */
    if ((oflag & RT_DEVICE_FLAG_DMA_RX) && !(dev->flag & RT_DEVICE_FLAG_DMA_RX))
        return -RT_EIO;
    if ((oflag & RT_DEVICE_FLAG_DMA_TX) && !(dev->flag & RT_DEVICE_FLAG_DMA_TX))
        return -RT_EIO;
-#endif /* RT_SERIAL_USING_DMA */
    if ((oflag & RT_DEVICE_FLAG_INT_RX) && !(dev->flag & RT_DEVICE_FLAG_INT_RX))
        return -RT_EIO;
    if ((oflag & RT_DEVICE_FLAG_INT_TX) && !(dev->flag & RT_DEVICE_FLAG_INT_TX))