diff --git a/drivers/net/wireless/rt2x00/rt2400pci.c b/drivers/net/wireless/rt2x00/rt2400pci.c
index 6d3cdaf5903e..c9a234fc3cd1 100644
--- a/drivers/net/wireless/rt2x00/rt2400pci.c
+++ b/drivers/net/wireless/rt2x00/rt2400pci.c
@@ -1019,30 +1019,6 @@ static void rt2400pci_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 				    struct ieee80211_tx_control *control)
 {
 	u32 word;
-	u32 signal = 0;
-	u32 service = 0;
-	u32 length_high = 0;
-	u32 length_low = 0;
-
-	/*
-	 * The PLCP values should be treated as if they
-	 * were BBP values.
-	 */
-	rt2x00_set_field32(&signal, BBPCSR_VALUE, desc->signal);
-	rt2x00_set_field32(&signal, BBPCSR_REGNUM, 5);
-	rt2x00_set_field32(&signal, BBPCSR_BUSY, 1);
-
-	rt2x00_set_field32(&service, BBPCSR_VALUE, desc->service);
-	rt2x00_set_field32(&service, BBPCSR_REGNUM, 6);
-	rt2x00_set_field32(&service, BBPCSR_BUSY, 1);
-
-	rt2x00_set_field32(&length_high, BBPCSR_VALUE, desc->length_high);
-	rt2x00_set_field32(&length_high, BBPCSR_REGNUM, 7);
-	rt2x00_set_field32(&length_high, BBPCSR_BUSY, 1);
-
-	rt2x00_set_field32(&length_low, BBPCSR_VALUE, desc->length_low);
-	rt2x00_set_field32(&length_low, BBPCSR_REGNUM, 8);
-	rt2x00_set_field32(&length_low, BBPCSR_BUSY, 1);
 
 	/*
 	 * Start writing the descriptor words.
@@ -1052,13 +1028,21 @@ static void rt2400pci_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 	rt2x00_desc_write(txd, 2, word);
 
 	rt2x00_desc_read(txd, 3, &word);
-	rt2x00_set_field32(&word, TXD_W3_PLCP_SIGNAL, signal);
-	rt2x00_set_field32(&word, TXD_W3_PLCP_SERVICE, service);
+	rt2x00_set_field32(&word, TXD_W3_PLCP_SIGNAL, desc->signal);
+	rt2x00_set_field32(&word, TXD_W3_PLCP_SIGNAL_REGNUM, 5);
+	rt2x00_set_field32(&word, TXD_W3_PLCP_SIGNAL_BUSY, 1);
+	rt2x00_set_field32(&word, TXD_W3_PLCP_SERVICE, desc->service);
+	rt2x00_set_field32(&word, TXD_W3_PLCP_SERVICE_REGNUM, 6);
+	rt2x00_set_field32(&word, TXD_W3_PLCP_SERVICE_BUSY, 1);
 	rt2x00_desc_write(txd, 3, word);
 
 	rt2x00_desc_read(txd, 4, &word);
-	rt2x00_set_field32(&word, TXD_W4_PLCP_LENGTH_LOW, length_low);
-	rt2x00_set_field32(&word, TXD_W4_PLCP_LENGTH_HIGH, length_high);
+	rt2x00_set_field32(&word, TXD_W4_PLCP_LENGTH_LOW, desc->length_low);
+	rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_LOW_REGNUM, 8);
+	rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_LOW_BUSY, 1);
+	rt2x00_set_field32(&word, TXD_W4_PLCP_LENGTH_HIGH, desc->length_high);
+	rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_HIGH_REGNUM, 7);
+	rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_HIGH_BUSY, 1);
 	rt2x00_desc_write(txd, 4, word);
 
 	rt2x00_desc_read(txd, 0, &word);
diff --git a/drivers/net/wireless/rt2x00/rt2400pci.h b/drivers/net/wireless/rt2x00/rt2400pci.h
index f5dbde7b2015..369aac6d0336 100644
--- a/drivers/net/wireless/rt2x00/rt2400pci.h
+++ b/drivers/net/wireless/rt2x00/rt2400pci.h
@@ -839,11 +839,21 @@
 
 /*
  * Word3 & 4: PLCP information
+ * The PLCP values should be treated as if they were BBP values.
  */
-#define TXD_W3_PLCP_SIGNAL		FIELD32(0x0000ffff)
-#define TXD_W3_PLCP_SERVICE		FIELD32(0xffff0000)
-#define TXD_W4_PLCP_LENGTH_LOW		FIELD32(0x0000ffff)
-#define TXD_W4_PLCP_LENGTH_HIGH		FIELD32(0xffff0000)
+#define TXD_W3_PLCP_SIGNAL		FIELD32(0x000000ff)
+#define TXD_W3_PLCP_SIGNAL_REGNUM	FIELD32(0x00007f00)
+#define TXD_W3_PLCP_SIGNAL_BUSY		FIELD32(0x00008000)
+#define TXD_W3_PLCP_SERVICE		FIELD32(0x00ff0000)
+#define TXD_W3_PLCP_SERVICE_REGNUM	FIELD32(0x7f000000)
+#define TXD_W3_PLCP_SERVICE_BUSY	FIELD32(0x80000000)
+
+#define TXD_W4_PLCP_LENGTH_LOW		FIELD32(0x000000ff)
+#define TXD_W3_PLCP_LENGTH_LOW_REGNUM	FIELD32(0x00007f00)
+#define TXD_W3_PLCP_LENGTH_LOW_BUSY	FIELD32(0x00008000)
+#define TXD_W4_PLCP_LENGTH_HIGH		FIELD32(0x00ff0000)
+#define TXD_W3_PLCP_LENGTH_HIGH_REGNUM	FIELD32(0x7f000000)
+#define TXD_W3_PLCP_LENGTH_HIGH_BUSY	FIELD32(0x80000000)
 
 /*
  * Word5