diff --git a/drivers/net/wireless/b43/dma.c b/drivers/net/wireless/b43/dma.c
index 0f021c666d08..38246046a42f 100644
--- a/drivers/net/wireless/b43/dma.c
+++ b/drivers/net/wireless/b43/dma.c
@@ -74,8 +74,7 @@ static void op32_fill_descriptor(struct b43_dmaring *ring,
 	addrext = (u32) (dmaaddr & SSB_DMA_TRANSLATION_MASK)
 	    >> SSB_DMA_TRANSLATION_SHIFT;
 	addr |= ssb_dma_translation(ring->dev->dev);
-	ctl = (bufsize - ring->frameoffset)
-	    & B43_DMA32_DCTL_BYTECNT;
+	ctl = bufsize & B43_DMA32_DCTL_BYTECNT;
 	if (slot == ring->nr_slots - 1)
 		ctl |= B43_DMA32_DCTL_DTABLEEND;
 	if (start)
@@ -177,8 +176,7 @@ static void op64_fill_descriptor(struct b43_dmaring *ring,
 		ctl0 |= B43_DMA64_DCTL0_FRAMEEND;
 	if (irq)
 		ctl0 |= B43_DMA64_DCTL0_IRQ;
-	ctl1 |= (bufsize - ring->frameoffset)
-	    & B43_DMA64_DCTL1_BYTECNT;
+	ctl1 |= bufsize & B43_DMA64_DCTL1_BYTECNT;
 	ctl1 |= (addrext << B43_DMA64_DCTL1_ADDREXT_SHIFT)
 	    & B43_DMA64_DCTL1_ADDREXT_MASK;
 
@@ -830,9 +828,6 @@ struct b43_dmaring *b43_setup_dmaring(struct b43_wldev *dev,
 		if (ring->index == 0) {
 			ring->rx_buffersize = B43_DMA0_RX_BUFFERSIZE;
 			ring->frameoffset = B43_DMA0_RX_FRAMEOFFSET;
-		} else if (ring->index == 3) {
-			ring->rx_buffersize = B43_DMA3_RX_BUFFERSIZE;
-			ring->frameoffset = B43_DMA3_RX_FRAMEOFFSET;
 		} else
 			B43_WARN_ON(1);
 	}
diff --git a/drivers/net/wireless/b43/dma.h b/drivers/net/wireless/b43/dma.h
index d1eb5c0848a5..4ec24e8f4fd7 100644
--- a/drivers/net/wireless/b43/dma.h
+++ b/drivers/net/wireless/b43/dma.h
@@ -1,14 +1,12 @@
 #ifndef B43_DMA_H_
 #define B43_DMA_H_
 
-#include <linux/list.h>
+#include <linux/ieee80211.h>
 #include <linux/spinlock.h>
-#include <linux/workqueue.h>
-#include <linux/linkage.h>
-#include <asm/atomic.h>
 
 #include "b43.h"
 
+
 /* DMA-Interrupt reasons. */
 #define B43_DMAIRQ_FATALMASK	((1 << 10) | (1 << 11) | (1 << 12) \
 					 | (1 << 14) | (1 << 15))
@@ -161,14 +159,13 @@ struct b43_dmadesc_generic {
 
 /* Misc DMA constants */
 #define B43_DMA_RINGMEMSIZE		PAGE_SIZE
-#define B43_DMA0_RX_FRAMEOFFSET	30
-#define B43_DMA3_RX_FRAMEOFFSET	0
+#define B43_DMA0_RX_FRAMEOFFSET		30
 
 /* DMA engine tuning knobs */
 #define B43_TXRING_SLOTS		128
 #define B43_RXRING_SLOTS		64
-#define B43_DMA0_RX_BUFFERSIZE	(2304 + 100)
-#define B43_DMA3_RX_BUFFERSIZE	16
+#define B43_DMA0_RX_BUFFERSIZE		IEEE80211_MAX_FRAME_LEN
+
 
 struct sk_buff;
 struct b43_private;