Merge pull request #790 from TanekLiang/stm32f1l07-c99

[Bsp] update stm32f107 spi driver

bsp/stm32f107/drivers/rt_stm32f10x_spi.c

@@ -144,7 +144,7 @@ void DMA1_Channel4_IRQHandler(void) {
     /* enter interrupt */
     rt_interrupt_enter();
     rt_event_send(&dma2.event, SPI_DMA_TX_DONE);
-    DMA_ClearFlag(dma2.tx_gl_flag);
+    DMA_ClearFlag(dma2.priv_data->tx_gl_flag);
     /* leave interrupt */
     rt_interrupt_leave();
 }
@@ -418,9 +418,12 @@ rt_err_t stm32_spi_register(SPI_TypeDef * SPI,
                             const char * spi_bus_name)
 {
     rt_err_t res = RT_EOK;
+#ifdef SPI_USE_DMA
     NVIC_InitTypeDef NVIC_InitStructure;
-    RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
+#endif
     rt_uint32_t flags = 0;
+    RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
+
     if(SPI == SPI1)
     {
     	stm32_spi->SPI = SPI1;