diff --git a/drivers/net/wireless/rt2x00/rt2400pci.c b/drivers/net/wireless/rt2x00/rt2400pci.c
index 164df9347a2f9762367889495dacf1378bd8e95c..798f625e38f70a718a70c21027d9f9aab1ac36d5 100644
--- a/drivers/net/wireless/rt2x00/rt2400pci.c
+++ b/drivers/net/wireless/rt2x00/rt2400pci.c
@@ -331,9 +331,8 @@ static void rt2400pci_config_erp(struct rt2x00_dev *rt2x00dev,
 	preamble_mask = erp->short_preamble << 3;
 
 	rt2x00pci_register_read(rt2x00dev, TXCSR1, &reg);
-	rt2x00_set_field32(&reg, TXCSR1_ACK_TIMEOUT, erp->ack_timeout);
-	rt2x00_set_field32(&reg, TXCSR1_ACK_CONSUME_TIME,
-			   erp->ack_consume_time);
+	rt2x00_set_field32(&reg, TXCSR1_ACK_TIMEOUT, 0x1ff);
+	rt2x00_set_field32(&reg, TXCSR1_ACK_CONSUME_TIME, 0x13a);
 	rt2x00_set_field32(&reg, TXCSR1_TSF_OFFSET, IEEE80211_HEADER);
 	rt2x00_set_field32(&reg, TXCSR1_AUTORESPONDER, 1);
 	rt2x00pci_register_write(rt2x00dev, TXCSR1, reg);
diff --git a/drivers/net/wireless/rt2x00/rt2500pci.c b/drivers/net/wireless/rt2x00/rt2500pci.c
index 4186582f2770df1cc6e1ee98a947973d169c3d7b..2e872ac6982673018733f66654afccb7cdf6bf69 100644
--- a/drivers/net/wireless/rt2x00/rt2500pci.c
+++ b/drivers/net/wireless/rt2x00/rt2500pci.c
@@ -337,9 +337,8 @@ static void rt2500pci_config_erp(struct rt2x00_dev *rt2x00dev,
 	preamble_mask = erp->short_preamble << 3;
 
 	rt2x00pci_register_read(rt2x00dev, TXCSR1, &reg);
-	rt2x00_set_field32(&reg, TXCSR1_ACK_TIMEOUT, erp->ack_timeout);
-	rt2x00_set_field32(&reg, TXCSR1_ACK_CONSUME_TIME,
-			   erp->ack_consume_time);
+	rt2x00_set_field32(&reg, TXCSR1_ACK_TIMEOUT, 0x162);
+	rt2x00_set_field32(&reg, TXCSR1_ACK_CONSUME_TIME, 0xa2);
 	rt2x00_set_field32(&reg, TXCSR1_TSF_OFFSET, IEEE80211_HEADER);
 	rt2x00_set_field32(&reg, TXCSR1_AUTORESPONDER, 1);
 	rt2x00pci_register_write(rt2x00dev, TXCSR1, reg);
diff --git a/drivers/net/wireless/rt2x00/rt2500usb.c b/drivers/net/wireless/rt2x00/rt2500usb.c
index b04f59bab3b06a2dd81f78f3dc84ff3af79ff2b4..22dd6d9e29812b60d4326ff5324e4e8dd1a2ffb7 100644
--- a/drivers/net/wireless/rt2x00/rt2500usb.c
+++ b/drivers/net/wireless/rt2x00/rt2500usb.c
@@ -488,10 +488,6 @@ static void rt2500usb_config_erp(struct rt2x00_dev *rt2x00dev,
 {
 	u16 reg;
 
-	rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
-	rt2x00_set_field16(&reg, TXRX_CSR1_ACK_TIMEOUT, erp->ack_timeout);
-	rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
-
 	rt2500usb_register_read(rt2x00dev, TXRX_CSR10, &reg);
 	rt2x00_set_field16(&reg, TXRX_CSR10_AUTORESPOND_PREAMBLE,
 			   !!erp->short_preamble);
diff --git a/drivers/net/wireless/rt2x00/rt2800usb.c b/drivers/net/wireless/rt2x00/rt2800usb.c
index 639dc6cc04b98f0c038e99c88c8a79653e1e2498..a084077a1c6115942a27caa9c9cf8b261fbf4115 100644
--- a/drivers/net/wireless/rt2x00/rt2800usb.c
+++ b/drivers/net/wireless/rt2x00/rt2800usb.c
@@ -580,8 +580,7 @@ static void rt2800usb_config_erp(struct rt2x00_dev *rt2x00dev,
 	u32 reg;
 
 	rt2x00usb_register_read(rt2x00dev, TX_TIMEOUT_CFG, &reg);
-	rt2x00_set_field32(&reg, TX_TIMEOUT_CFG_RX_ACK_TIMEOUT,
-			   DIV_ROUND_UP(erp->ack_timeout, erp->slot_time));
+	rt2x00_set_field32(&reg, TX_TIMEOUT_CFG_RX_ACK_TIMEOUT, 0x20);
 	rt2x00usb_register_write(rt2x00dev, TX_TIMEOUT_CFG, reg);
 
 	rt2x00usb_register_read(rt2x00dev, AUTO_RSP_CFG, &reg);
diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h
index 555a777db6df1ed6a795a790fb25edf822bd6f0a..27bc6b7fbfdeffb6d610f4c4a3a5a2de294f0c99 100644
--- a/drivers/net/wireless/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/rt2x00/rt2x00.h
@@ -417,9 +417,6 @@ struct rt2x00lib_erp {
 	int short_preamble;
 	int cts_protection;
 
-	int ack_timeout;
-	int ack_consume_time;
-
 	u32 basic_rates;
 
 	int slot_time;
diff --git a/drivers/net/wireless/rt2x00/rt2x00config.c b/drivers/net/wireless/rt2x00/rt2x00config.c
index 3501788ab4982915998e9cac8326d6e84d8c02f7..40a201e2e1510c125b62c36cb0258db38ecd8b43 100644
--- a/drivers/net/wireless/rt2x00/rt2x00config.c
+++ b/drivers/net/wireless/rt2x00/rt2x00config.c
@@ -94,17 +94,6 @@ void rt2x00lib_config_erp(struct rt2x00_dev *rt2x00dev,
 	erp.difs = bss_conf->use_short_slot ? SHORT_DIFS : DIFS;
 	erp.eifs = bss_conf->use_short_slot ? SHORT_EIFS : EIFS;
 
-	erp.ack_timeout = PLCP + erp.difs + GET_DURATION(ACK_SIZE, 10);
-	erp.ack_consume_time = SIFS + PLCP + GET_DURATION(ACK_SIZE, 10);
-
-	if (bss_conf->use_short_preamble) {
-		erp.ack_timeout += SHORT_PREAMBLE;
-		erp.ack_consume_time += SHORT_PREAMBLE;
-	} else {
-		erp.ack_timeout += PREAMBLE;
-		erp.ack_consume_time += PREAMBLE;
-	}
-
 	erp.basic_rates = bss_conf->basic_rates;
 	erp.beacon_int = bss_conf->beacon_int;
 
diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c
index f4b4b86da4da5b1e7f8935982b4731ac99bc1685..b20e3eac9d67da909c4ea59ecac586fa9af0974f 100644
--- a/drivers/net/wireless/rt2x00/rt61pci.c
+++ b/drivers/net/wireless/rt2x00/rt61pci.c
@@ -598,7 +598,7 @@ static void rt61pci_config_erp(struct rt2x00_dev *rt2x00dev,
 	u32 reg;
 
 	rt2x00pci_register_read(rt2x00dev, TXRX_CSR0, &reg);
-	rt2x00_set_field32(&reg, TXRX_CSR0_RX_ACK_TIMEOUT, erp->ack_timeout);
+	rt2x00_set_field32(&reg, TXRX_CSR0_RX_ACK_TIMEOUT, 0x32);
 	rt2x00_set_field32(&reg, TXRX_CSR0_TSF_OFFSET, IEEE80211_HEADER);
 	rt2x00pci_register_write(rt2x00dev, TXRX_CSR0, reg);
 
diff --git a/drivers/net/wireless/rt2x00/rt73usb.c b/drivers/net/wireless/rt2x00/rt73usb.c
index 90e11726305128c60208306a1490c1b097685f0c..1cbd9b4a3efc9c560784280e7c76f6160be00161 100644
--- a/drivers/net/wireless/rt2x00/rt73usb.c
+++ b/drivers/net/wireless/rt2x00/rt73usb.c
@@ -561,7 +561,7 @@ static void rt73usb_config_erp(struct rt2x00_dev *rt2x00dev,
 	u32 reg;
 
 	rt2x00usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
-	rt2x00_set_field32(&reg, TXRX_CSR0_RX_ACK_TIMEOUT, erp->ack_timeout);
+	rt2x00_set_field32(&reg, TXRX_CSR0_RX_ACK_TIMEOUT, 0x32);
 	rt2x00_set_field32(&reg, TXRX_CSR0_TSF_OFFSET, IEEE80211_HEADER);
 	rt2x00usb_register_write(rt2x00dev, TXRX_CSR0, reg);