diff --git a/drivers/staging/et131x/et1310_address_map.h b/drivers/staging/et131x/et1310_address_map.h
index c447e9a3ed92..019588d13127 100644
--- a/drivers/staging/et131x/et1310_address_map.h
+++ b/drivers/staging/et131x/et1310_address_map.h
@@ -339,19 +339,10 @@ typedef union _RXDMA_CSR_t {
 /*
  * structure for number of packets done reg in rxdma address map
  * located at address 0x200C
+ *
+ * 31-8: unused
+ * 7-0: num done
  */
-typedef union _RXDMA_NUM_PKT_DONE_t {
-	u32 value;
-	struct {
-#ifdef _BIT_FIELDS_HTOL
-		u32 unused:24;	/* bits 8-31 */
-		u32 num_done:8;	/* bits 0-7 */
-#else
-		u32 num_done:8;	/* bits 0-7 */
-		u32 unused:24;	/* bits 8-31 */
-#endif
-	} bits;
-} RXDMA_NUM_PKT_DONE_t, *PRXDMA_NUM_PKT_DONE_t;
 
 /*
  * structure for max packet time reg in rxdma address map
@@ -394,19 +385,10 @@ typedef union _RXDMA_NUM_PKT_DONE_t {
 /*
  * structure for packet status ring number of descriptors reg in rxdma address
  * map.  Located at address 0x2028
+ *
+ * 31-12: unused
+ * 11-0: psr ndes
  */
-typedef union _RXDMA_PSR_NUM_DES_t {
-	u32 value;
-	struct {
-#ifdef _BIT_FIELDS_HTOL
-		u32 unused:20;		/* bits 12-31 */
-		u32 psr_ndes:12;	/* bit 0-11 */
-#else
-		u32 psr_ndes:12;	/* bit 0-11 */
-		u32 unused:20;		/* bits 12-31 */
-#endif
-	} bits;
-} RXDMA_PSR_NUM_DES_t, *PRXDMA_PSR_NUM_DES_t;
 
 /*
  * structure for packet status ring available offset reg in rxdma address map
@@ -449,36 +431,18 @@ typedef union _RXDMA_PSR_FULL_OFFSET_t {
 /*
  * structure for packet status ring access index reg in rxdma address map
  * located at address 0x2034
+ *
+ * 31-5: unused
+ * 4-0: psr_ai
  */
-typedef union _RXDMA_PSR_ACCESS_INDEX_t {
-	u32 value;
-	struct {
-#ifdef _BIT_FIELDS_HTOL
-		u32 unused:27;	/* bits 5-31 */
-		u32 psr_ai:5;	/* bits 0-4 */
-#else
-		u32 psr_ai:5;	/* bits 0-4 */
-		u32 unused:27;	/* bits 5-31 */
-#endif
-	} bits;
-} RXDMA_PSR_ACCESS_INDEX_t, *PRXDMA_PSR_ACCESS_INDEX_t;
 
 /*
  * structure for packet status ring minimum descriptors reg in rxdma address
  * map.  Located at address 0x2038
+ *
+ * 31-12: unused
+ * 11-0: psr_min
  */
-typedef union _RXDMA_PSR_MIN_DES_t {
-	u32 value;
-	struct {
-#ifdef _BIT_FIELDS_HTOL
-		u32 unused:20;	/* bits 12-31 */
-		u32 psr_min:12;	/* bits 0-11 */
-#else
-		u32 psr_min:12;	/* bits 0-11 */
-		u32 unused:20;	/* bits 12-31 */
-#endif
-	} bits;
-} RXDMA_PSR_MIN_DES_t, *PRXDMA_PSR_MIN_DES_t;
 
 /*
  * structure for free buffer ring base lo address reg in rxdma address map
@@ -495,6 +459,9 @@ typedef union _RXDMA_PSR_MIN_DES_t {
 /*
  * structure for free buffer ring number of descriptors reg in rxdma address
  * map.  Located at address 0x2044
+ *
+ * 31-10: unused
+ * 9-0: fbr ndesc
  */
 typedef union _RXDMA_FBR_NUM_DES_t {
 	u32 value;
@@ -524,36 +491,18 @@ typedef union _RXDMA_FBR_NUM_DES_t {
 /*
  * structure for free buffer cache 0 full offset reg in rxdma address map
  * located at address 0x2050
+ *
+ * 31-5: unused
+ * 4-0: fbc rdi
  */
-typedef union _RXDMA_FBC_RD_INDEX_t {
-	u32 value;
-	struct {
-#ifdef _BIT_FIELDS_HTOL
-		u32 unused:27;	/* bits 5-31 */
-		u32 fbc_rdi:5;	/* bit 0-4 */
-#else
-		u32 fbc_rdi:5;	/* bit 0-4 */
-		u32 unused:27;	/* bits 5-31 */
-#endif
-	} bits;
-} RXDMA_FBC_RD_INDEX_t, *PRXDMA_FBC_RD_INDEX_t;
 
 /*
  * structure for free buffer ring 0 minimum descriptor reg in rxdma address map
  * located at address 0x2054
+ *
+ * 31-10: unused
+ * 9-0: fbr min
  */
-typedef union _RXDMA_FBR_MIN_DES_t {
-	u32 value;
-	struct {
-#ifdef _BIT_FIELDS_HTOL
-		u32 unused:22;	/* bits 10-31 */
-		u32 fbr_min:10;	/* bits 0-9 */
-#else
-		u32 fbr_min:10;	/* bits 0-9 */
-		u32 unused:22;	/* bits 10-31 */
-#endif
-	} bits;
-} RXDMA_FBR_MIN_DES_t, *PRXDMA_FBR_MIN_DES_t;
 
 /*
  * structure for free buffer ring 1 base address lo reg in rxdma address map
@@ -599,32 +548,32 @@ typedef struct _RXDMA_t {				/* Location: */
 	RXDMA_CSR_t csr;				/*  0x2000 */
 	u32 dma_wb_base_lo;				/*  0x2004 */
 	u32 dma_wb_base_hi;				/*  0x2008 */
-	RXDMA_NUM_PKT_DONE_t num_pkt_done;		/*  0x200C */
+	u32 num_pkt_done;				/*  0x200C */
 	u32 max_pkt_time;				/*  0x2010 */
 	u32 rxq_rd_addr;				/*  0x2014 */
-	u32 rxq_rd_addr_ext;			/*  0x2018 */
+	u32 rxq_rd_addr_ext;				/*  0x2018 */
 	u32 rxq_wr_addr;				/*  0x201C */
 	u32 psr_base_lo;				/*  0x2020 */
 	u32 psr_base_hi;				/*  0x2024 */
-	RXDMA_PSR_NUM_DES_t psr_num_des;		/*  0x2028 */
+	u32 psr_num_des;				/*  0x2028 */
 	RXDMA_PSR_AVAIL_OFFSET_t psr_avail_offset;	/*  0x202C */
 	RXDMA_PSR_FULL_OFFSET_t psr_full_offset;	/*  0x2030 */
-	RXDMA_PSR_ACCESS_INDEX_t psr_access_index;	/*  0x2034 */
-	RXDMA_PSR_MIN_DES_t psr_min_des;		/*  0x2038 */
+	u32 psr_access_index;				/*  0x2034 */
+	u32 psr_min_des;				/*  0x2038 */
 	u32 fbr0_base_lo;				/*  0x203C */
 	u32 fbr0_base_hi;				/*  0x2040 */
-	RXDMA_FBR_NUM_DES_t fbr0_num_des;		/*  0x2044 */
-	u32 fbr0_avail_offset;			/*  0x2048 */
-	u32 fbr0_full_offset;			/*  0x204C */
-	RXDMA_FBC_RD_INDEX_t fbr0_rd_index;		/*  0x2050 */
-	RXDMA_FBR_MIN_DES_t fbr0_min_des;		/*  0x2054 */
+	u32 fbr0_num_des;				/*  0x2044 */
+	u32 fbr0_avail_offset;				/*  0x2048 */
+	u32 fbr0_full_offset;				/*  0x204C */
+	u32 fbr0_rd_index;				/*  0x2050 */
+	u32 fbr0_min_des;				/*  0x2054 */
 	u32 fbr1_base_lo;				/*  0x2058 */
 	u32 fbr1_base_hi;				/*  0x205C */
-	RXDMA_FBR_NUM_DES_t fbr1_num_des;		/*  0x2060 */
-	u32 fbr1_avail_offset;			/*  0x2064 */
-	u32 fbr1_full_offset;			/*  0x2068 */
-	RXDMA_FBC_RD_INDEX_t fbr1_rd_index;		/*  0x206C */
-	RXDMA_FBR_MIN_DES_t fbr1_min_des;		/*  0x2070 */
+	u32 fbr1_num_des;				/*  0x2060 */
+	u32 fbr1_avail_offset;				/*  0x2064 */
+	u32 fbr1_full_offset;				/*  0x2068 */
+	u32 fbr1_rd_index;				/*  0x206C */
+	u32 fbr1_min_des;				/*  0x2070 */
 } RXDMA_t, *PRXDMA_t;
 
 /* END OF RXDMA REGISTER ADDRESS MAP */
diff --git a/drivers/staging/et131x/et1310_rx.c b/drivers/staging/et131x/et1310_rx.c
index 48f1ffc3df6a..c3778d2c5df5 100644
--- a/drivers/staging/et131x/et1310_rx.c
+++ b/drivers/staging/et131x/et1310_rx.c
@@ -598,7 +598,7 @@ void ConfigRxDmaRegs(struct et131x_adapter *etdev)
 	struct _rx_ring_t *rx_local = &etdev->RxRing;
 	PFBR_DESC_t fbr_entry;
 	u32 entry;
-	RXDMA_PSR_NUM_DES_t psr_num_des;
+	u32 psr_num_des;
 	unsigned long flags;
 
 	/* Halt RXDMA to perform the reconfigure.  */
@@ -623,12 +623,12 @@ void ConfigRxDmaRegs(struct et131x_adapter *etdev)
 	writel((u32) ((u64)rx_local->pPSRingPa >> 32),
 	       &rx_dma->psr_base_hi);
 	writel((u32) rx_local->pPSRingPa, &rx_dma->psr_base_lo);
-	writel(rx_local->PsrNumEntries - 1, &rx_dma->psr_num_des.value);
+	writel(rx_local->PsrNumEntries - 1, &rx_dma->psr_num_des);
 	writel(0, &rx_dma->psr_full_offset.value);
 
-	psr_num_des.value = readl(&rx_dma->psr_num_des.value);
-	writel((psr_num_des.bits.psr_ndes * LO_MARK_PERCENT_FOR_PSR) / 100,
-	       &rx_dma->psr_min_des.value);
+	psr_num_des = readl(&rx_dma->psr_num_des) & 0xFFF;
+	writel((psr_num_des * LO_MARK_PERCENT_FOR_PSR) / 100,
+	       &rx_dma->psr_min_des);
 
 	spin_lock_irqsave(&etdev->RcvLock, flags);
 
@@ -650,7 +650,7 @@ void ConfigRxDmaRegs(struct et131x_adapter *etdev)
 	 */
 	writel((u32) (rx_local->Fbr1Realpa >> 32), &rx_dma->fbr1_base_hi);
 	writel((u32) rx_local->Fbr1Realpa, &rx_dma->fbr1_base_lo);
-	writel(rx_local->Fbr1NumEntries - 1, &rx_dma->fbr1_num_des.value);
+	writel(rx_local->Fbr1NumEntries - 1, &rx_dma->fbr1_num_des);
 	writel(ET_DMA10_WRAP, &rx_dma->fbr1_full_offset);
 
 	/* This variable tracks the free buffer ring 1 full position, so it
@@ -658,7 +658,7 @@ void ConfigRxDmaRegs(struct et131x_adapter *etdev)
 	 */
 	rx_local->local_Fbr1_full = ET_DMA10_WRAP;
 	writel(((rx_local->Fbr1NumEntries * LO_MARK_PERCENT_FOR_RX) / 100) - 1,
-	       &rx_dma->fbr1_min_des.value);
+	       &rx_dma->fbr1_min_des);
 
 #ifdef USE_FBR0
 	/* Now's the best time to initialize FBR0 contents */
@@ -672,7 +672,7 @@ void ConfigRxDmaRegs(struct et131x_adapter *etdev)
 
 	writel((u32) (rx_local->Fbr0Realpa >> 32), &rx_dma->fbr0_base_hi);
 	writel((u32) rx_local->Fbr0Realpa, &rx_dma->fbr0_base_lo);
-	writel(rx_local->Fbr0NumEntries - 1, &rx_dma->fbr0_num_des.value);
+	writel(rx_local->Fbr0NumEntries - 1, &rx_dma->fbr0_num_des);
 	writel(ET_DMA10_WRAP, &rx_dma->fbr0_full_offset);
 
 	/* This variable tracks the free buffer ring 0 full position, so it
@@ -680,7 +680,7 @@ void ConfigRxDmaRegs(struct et131x_adapter *etdev)
 	 */
 	rx_local->local_Fbr0_full = ET_DMA10_WRAP;
 	writel(((rx_local->Fbr0NumEntries * LO_MARK_PERCENT_FOR_RX) / 100) - 1,
-	       &rx_dma->fbr0_min_des.value);
+	       &rx_dma->fbr0_min_des);
 #endif
 
 	/* Program the number of packets we will receive before generating an
@@ -688,7 +688,7 @@ void ConfigRxDmaRegs(struct et131x_adapter *etdev)
 	 * For version B silicon, this value gets updated once autoneg is
 	 *complete.
 	 */
-	writel(PARM_RX_NUM_BUFS_DEF, &rx_dma->num_pkt_done.value);
+	writel(PARM_RX_NUM_BUFS_DEF, &rx_dma->num_pkt_done);
 
 	/* The "time_done" is not working correctly to coalesce interrupts
 	 * after a given time period, but rather is giving us an interrupt
@@ -712,7 +712,7 @@ void SetRxDmaTimer(struct et131x_adapter *etdev)
 	if ((etdev->linkspeed == TRUEPHY_SPEED_100MBPS) ||
 	    (etdev->linkspeed == TRUEPHY_SPEED_10MBPS)) {
 		writel(0, &etdev->regs->rxdma.max_pkt_time);
-		writel(1, &etdev->regs->rxdma.num_pkt_done.value);
+		writel(1, &etdev->regs->rxdma.num_pkt_done);
 	}
 }