diff --git a/target/linux/mediatek/files-5.4/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/target/linux/mediatek/files-5.4/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index 28cda15..7149a69 100755
--- a/target/linux/mediatek/files-5.4/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/target/linux/mediatek/files-5.4/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -2572,7 +2572,8 @@
 
 	if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) {
 		val = mtk_r32(eth, MTK_QDMA_GLO_CFG);
-		if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2))
+		if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) {
+			val &= ~MTK_RESV_BUF_MASK;
 			mtk_w32(eth,
 				val | MTK_TX_DMA_EN | MTK_RX_DMA_EN |
 				MTK_DMA_SIZE_32DWORDS | MTK_TX_WB_DDONE |
@@ -2580,6 +2581,7 @@
 				MTK_RESV_BUF | MTK_WCOMP_EN |
 				MTK_DMAD_WR_WDONE | MTK_CHK_DDONE_EN |
 				MTK_RX_2B_OFFSET, MTK_QDMA_GLO_CFG);
+		}
 		else
 			mtk_w32(eth,
 				val | MTK_TX_DMA_EN |
diff --git a/target/linux/mediatek/files-5.4/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/target/linux/mediatek/files-5.4/drivers/net/ethernet/mediatek/mtk_eth_soc.h
index 41e8f30..9c5afeb 100755
--- a/target/linux/mediatek/files-5.4/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+++ b/target/linux/mediatek/files-5.4/drivers/net/ethernet/mediatek/mtk_eth_soc.h
@@ -382,6 +382,7 @@
 #define MTK_WCOMP_EN		BIT(24)
 #define MTK_RESV_BUF		(0x80 << 16)
 #define MTK_MUTLI_CNT		(0x4 << 12)
+#define MTK_RESV_BUF_MASK	(0xff << 16)
 
 /* QDMA Reset Index Register */
 #define MTK_QDMA_RST_IDX	(QDMA_BASE + 0x208)