diff --git a/bsp/hc32/libraries/hc32_drivers/drv_eth.c b/bsp/hc32/libraries/hc32_drivers/drv_eth.c
index 573b70502a..043de32237 100644
--- a/bsp/hc32/libraries/hc32_drivers/drv_eth.c
+++ b/bsp/hc32/libraries/hc32_drivers/drv_eth.c
@@ -358,7 +358,9 @@ static void hc32_eth_irq_handle(stc_eth_handle_t *eth_handle)
         result = eth_device_ready(&(hc32_eth_device.parent));
         if (result != RT_EOK)
         {
+#if defined (RT_USING_ULOG) || defined (ULOG_USING_ISR_LOG)
             LOG_I("eth rx complete callback err = %d", result);
+#endif
         }
         /* Clear the Eth DMA Rx IT pending bits */
         ETH_DMA_ClearStatus(ETH_DMA_FLAG_RIS | ETH_DMA_FLAG_NIS);
@@ -465,7 +467,9 @@ static void eth_phy_irq_handler(void *args)
     rt_uint16_t status = 0;
 
     ETH_PHY_ReadReg(&EthHandle, PHY_IISDR, &status);
+#if defined (RT_USING_ULOG) || defined (ULOG_USING_ISR_LOG)
     LOG_D("phy interrupt status reg is 0x%X", status);
+#endif
 #endif
     hc32_phy_link_change();
 }
diff --git a/bsp/hc32/libraries/hc32_drivers/drv_spi.c b/bsp/hc32/libraries/hc32_drivers/drv_spi.c
index eccc05e544..b67490f625 100644
--- a/bsp/hc32/libraries/hc32_drivers/drv_spi.c
+++ b/bsp/hc32/libraries/hc32_drivers/drv_spi.c
@@ -473,8 +473,6 @@ static int32_t hc32_spi_dma_trans(struct hc32_spi_config *spi_config, const uint
     while ((RESET == DMA_GetTransCompleteStatus(DmaInstance, DmaFlag)) &&
             (u32TimeoutCnt < spi_config->timeout))
     {
-        rt_thread_mdelay(1);
-        u32TimeoutCnt++;
     }
     if (u32TimeoutCnt >= spi_config->timeout)
     {
@@ -544,7 +542,7 @@ static rt_ssize_t hc32_spi_xfer(struct rt_spi_device *device, struct rt_spi_mess
         if (message->send_buf && message->recv_buf)
         {
             hc32_spi_set_trans_mode(spi_instance, SPI_FULL_DUPLEX);
-            if ((spi_drv->spi_dma_flag & RT_DEVICE_FLAG_DMA_TX) && (spi_drv->spi_dma_flag & RT_DEVICE_FLAG_DMA_RX))
+            if ((spi_drv->spi_dma_flag & RT_DEVICE_FLAG_DMA_TX) && (spi_drv->spi_dma_flag & RT_DEVICE_FLAG_DMA_RX) && (send_length > 32))
             {
                 state = hc32_spi_dma_trans(spi_drv->config, send_buf, recv_buf, send_length);
             }
@@ -557,7 +555,7 @@ static rt_ssize_t hc32_spi_xfer(struct rt_spi_device *device, struct rt_spi_mess
         else if (message->send_buf)
         {
             hc32_spi_set_trans_mode(spi_instance, SPI_SEND_ONLY);
-            if (spi_drv->spi_dma_flag & RT_DEVICE_FLAG_DMA_TX)
+            if ((spi_drv->spi_dma_flag & RT_DEVICE_FLAG_DMA_TX) && (send_length > 32))
             {
                 state = hc32_spi_dma_trans(spi_drv->config, send_buf, RT_NULL, send_length);
             }
@@ -601,8 +599,6 @@ static rt_ssize_t hc32_spi_xfer(struct rt_spi_device *device, struct rt_spi_mess
                     while ((RESET == SPI_GetStatus(spi_instance, SPI_FLAG_IDLE)) &&
                             (u32TimeoutCnt < spi_drv->config->timeout))
                     {
-                        rt_thread_mdelay(1);
-                        u32TimeoutCnt++;
                     }
                     if (u32TimeoutCnt >= spi_drv->config->timeout)
                     {