From: Yang Wang <wangyzh...@163.com>
If IrqStat is NULL, the interrupt status will not be
read from the device.When the interrupt status is read,
it will also be cleared.
Cc: Leif Lindholm <quic_llind...@quicinc.com>
Cc: Ard Biesheuvel <a...@kernel.org>
Cc: Ran Wang <wang...@bosc.ac.cn>
Signed-off-by: Yang Wang <wangyzh...@163.com>
---
.../Drivers/DwEmacSnpDxe/EmacDxeUtil.c | 22 ++++++++++++-------
1 file changed, 14 insertions(+), 8 deletions(-)
diff --git a/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/EmacDxeUtil.c
b/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/EmacDxeUtil.c
index 3b982ce984..26d3ff6138 100755
--- a/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/EmacDxeUtil.c
+++ b/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/EmacDxeUtil.c
@@ -500,24 +500,30 @@ EmacGetDmaStatus (
UINT32 ErrorBit;
UINT32 Mask = 0;
+ if (IrqStat != NULL) {
+ *IrqStat = 0;
+ }
+
DmaStatus = MmioRead32 (MacBaseAddress +
DW_EMAC_DMAGRP_STATUS_OFST);
if (DmaStatus & DW_EMAC_DMAGRP_STATUS_NIS_SET_MSK) {
Mask |= DW_EMAC_DMAGRP_STATUS_NIS_SET_MSK;
// Rx interrupt
if (DmaStatus & DW_EMAC_DMAGRP_STATUS_RI_SET_MSK) {
- *IrqStat |= EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT;
- Mask |= DW_EMAC_DMAGRP_STATUS_RI_SET_MSK;
- } else {
- *IrqStat &= ~EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT;
+ if (IrqStat != NULL) {
+ *IrqStat |= EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT;
+ Mask |= DW_EMAC_DMAGRP_STATUS_RI_SET_MSK;
+ }
}
+
// Tx interrupt
if (DmaStatus & DW_EMAC_DMAGRP_STATUS_TI_SET_MSK) {
- *IrqStat |= EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT;
- Mask |= DW_EMAC_DMAGRP_STATUS_TI_SET_MSK;
- } else {
- *IrqStat &= ~EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT;
+ if (IrqStat != NULL) {
+ *IrqStat |= EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT;
+ Mask |= DW_EMAC_DMAGRP_STATUS_TI_SET_MSK;
+ }
}
+
// Tx Buffer
if (DmaStatus & DW_EMAC_DMAGRP_STATUS_TU_SET_MSK){
Mask |= DW_EMAC_DMAGRP_STATUS_TU_SET_MSK;
--
2.25.1
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