Signed-off-by: Hauke Mehrtens <[email protected]>
---
 drivers/net/wireless/b43/b43.h  | 1 +
 drivers/net/wireless/b43/main.c | 9 +++++++++
 2 files changed, 10 insertions(+)

diff --git a/drivers/net/wireless/b43/b43.h b/drivers/net/wireless/b43/b43.h
index 018ed5f..29c67eb 100644
--- a/drivers/net/wireless/b43/b43.h
+++ b/drivers/net/wireless/b43/b43.h
@@ -300,6 +300,7 @@ enum {
 #define B43_SHM_SH_LFFBLIM             0x0046  /* Long frame fallback retry 
limit */
 #define B43_SHM_SH_BEACPHYCTL          0x0054  /* Beacon PHY TX control word 
(see PHY TX control) */
 #define B43_SHM_SH_EXTNPHYCTL          0x00B0  /* Extended bytes for beacon 
PHY control (N) */
+#define B43_SHM_SH_BCN_LI              0x00B6  /* beacon listen interval */
 /* SHM_SHARED ACK/CTS control */
 #define B43_SHM_SH_ACKCTSPHYCTL                0x0022  /* ACK/CTS PHY control 
word (see PHY TX control) */
 /* SHM_SHARED probe response variables */
diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index 96edbd2..1b01e1f 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -3900,6 +3900,12 @@ static int b43_switch_band(struct b43_wldev *dev,
        return 0;
 }
 
+static void b43_set_beacon_listen_interval(struct b43_wldev *dev, u16 interval)
+{
+       interval = min_t(u16, interval, (u16)0xFF);
+       b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BCN_LI, interval);
+}
+
 /* Write the short and long frame retry limit values. */
 static void b43_set_retry_limits(struct b43_wldev *dev,
                                 unsigned int short_retry,
@@ -3928,6 +3934,9 @@ static int b43_op_config(struct ieee80211_hw *hw, u32 
changed)
        mutex_lock(&wl->mutex);
        b43_mac_suspend(dev);
 
+       if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL)
+               b43_set_beacon_listen_interval(dev, conf->listen_interval);
+
        if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
                phy->chandef = &conf->chandef;
                phy->channel = conf->chandef.chan->hw_value;
-- 
1.9.1

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