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fix GCC compiling error.

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git-svn-id: https://rt-thread.googlecode.com/svn/trunk@511 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
bernard.xiong
2010-03-18 09:20:04 +00:00
parent a4ce05206f
commit 8da1163675
3 changed files with 52 additions and 17 deletions
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libcpu/arm/stm32/serial.c
+5 -1
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@@ -335,6 +335,7 @@ static rt_size_t rt_serial_write (rt_device_t dev, rt_off_t pos, const void* buf
if (size > 0)
err_code = -RT_EFULL;
}
#ifdef RT_USING_HEAP
else if (dev->flag & RT_DEVICE_FLAG_DMA_TX)
{
/* DMA mode Tx */
@@ -381,6 +382,7 @@ static rt_size_t rt_serial_write (rt_device_t dev, rt_off_t pos, const void* buf
rt_hw_interrupt_enable(level);
}
}
#endif
else
{
/* polling mode */
@@ -544,6 +546,7 @@ void rt_hw_serial_dma_rx_isr(rt_device_t device)
*/
void rt_hw_serial_dma_tx_isr(rt_device_t device)
{
#ifdef RT_USING_HEAP
rt_uint32_t level;
struct stm32_serial_data_node* data_node;
struct stm32_serial_device* uart = (struct stm32_serial_device*) device->private;
@@ -570,7 +573,7 @@ void rt_hw_serial_dma_tx_isr(rt_device_t device)
/* enable interrupt */
rt_hw_interrupt_enable(level);
/* free data node memory */
/* free data node memory(!!) */
rt_free(data_node);
if (uart->dma_tx->list_tail != RT_NULL)
@@ -585,6 +588,7 @@ void rt_hw_serial_dma_tx_isr(rt_device_t device)
/* no data to be transmitted, disable DMA */
DMA_Cmd(uart->dma_tx->dma_channel, DISABLE);
}
#endif
}
/*@}*/