diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index cbb3d45..e41c10f 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -3245,6 +3245,43 @@
 	return 0;
 }
 
+static u64 b43_op_get_tsf(struct ieee80211_hw *hw)
+{
+	struct b43_wl *wl = hw_to_b43_wl(hw);
+	struct b43_wldev *dev;
+	u64 tsf;
+
+	mutex_lock(&wl->mutex);
+	spin_lock_irq(&wl->irq_lock);
+	dev = wl->current_dev;
+
+	if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED))
+		b43_tsf_read(dev, &tsf);
+	else
+		tsf = 0;
+
+	spin_unlock_irq(&wl->irq_lock);
+	mutex_unlock(&wl->mutex);
+
+	return tsf;
+}
+
+static void b43_op_set_tsf(struct ieee80211_hw *hw, u64 tsf)
+{
+	struct b43_wl *wl = hw_to_b43_wl(hw);
+	struct b43_wldev *dev;
+
+	mutex_lock(&wl->mutex);
+	spin_lock_irq(&wl->irq_lock);
+	dev = wl->current_dev;
+
+	if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED))
+		b43_tsf_write(dev, tsf);
+
+	spin_unlock_irq(&wl->irq_lock);
+	mutex_unlock(&wl->mutex);
+}
+
 static void b43_put_phy_into_reset(struct b43_wldev *dev)
 {
 	struct ssb_device *sdev = dev->dev;
@@ -4364,6 +4401,8 @@
 	.set_key		= b43_op_set_key,
 	.get_stats		= b43_op_get_stats,
 	.get_tx_stats		= b43_op_get_tx_stats,
+	.get_tsf		= b43_op_get_tsf,
+	.set_tsf		= b43_op_set_tsf,
 	.start			= b43_op_start,
 	.stop			= b43_op_stop,
 	.set_tim		= b43_op_beacon_set_tim,