Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem

Conflicts:
	drivers/net/wireless/libertas/if_cs.c
	drivers/net/wireless/rtlwifi/pci.c
	net/bluetooth/l2cap_sock.c

10 files changed, 175 insertions, 28 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2500usb.c b/drivers/net/wireless/rt2x00/rt2500usb.c
index b21f81231a09..15237c275486 100644
--- a/drivers/net/wireless/rt2x00/rt2500usb.c
+++ b/drivers/net/wireless/rt2x00/rt2500usb.c
@@ -1797,6 +1797,7 @@ static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev)
                 __set_bit(REQUIRE_COPY_IV, &rt2x00dev->cap_flags);
         }
         __set_bit(REQUIRE_SW_SEQNO, &rt2x00dev->cap_flags);
+        __set_bit(REQUIRE_PS_AUTOWAKE, &rt2x00dev->cap_flags);
 
         /*
          * Set the rssi offset.
diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c
index 5cd096e2ae36..790afd3ed946 100644
--- a/drivers/net/wireless/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/rt2x00/rt2800lib.c
@@ -1640,7 +1640,6 @@ static void rt2800_config_channel_rf53xx(struct rt2x00_dev *rt2x00dev,
                                          struct channel_info *info)
 {
         u8 rfcsr;
-        u16 eeprom;
 
         rt2800_rfcsr_write(rt2x00dev, 8, rf->rf1);
         rt2800_rfcsr_write(rt2x00dev, 9, rf->rf3);
@@ -1670,11 +1669,10 @@ static void rt2800_config_channel_rf53xx(struct rt2x00_dev *rt2x00dev,
                 rt2x00_set_field8(&rfcsr, RFCSR17_CODE, rt2x00dev->freq_offset);
         rt2800_rfcsr_write(rt2x00dev, 17, rfcsr);
 
-        rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC_CONF1, &eeprom);
         if (rf->channel <= 14) {
                 int idx = rf->channel-1;
 
-                if (rt2x00_get_field16(eeprom, EEPROM_NIC_CONF1_BT_COEXIST)) {
+                if (test_bit(CAPABILITY_BT_COEXIST, &rt2x00dev->cap_flags)) {
                         if (rt2x00_rt_rev_gte(rt2x00dev, RT5390, REV_RT5390F)) {
                                 /* r55/r59 value array of channel 1~14 */
                                 static const char r55_bt_rev[] = {0x83, 0x83,
@@ -2917,8 +2915,7 @@ static int rt2800_init_bbp(struct rt2x00_dev *rt2x00dev)
                 ant = (div_mode == 3) ? 1 : 0;
 
                 /* check if this is a Bluetooth combo card */
-                rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC_CONF1, &eeprom);
-                if (rt2x00_get_field16(eeprom, EEPROM_NIC_CONF1_BT_COEXIST)) {
+                if (test_bit(CAPABILITY_BT_COEXIST, &rt2x00dev->cap_flags)) {
                         u32 reg;
 
                         rt2800_register_read(rt2x00dev, GPIO_CTRL_CFG, &reg);
@@ -3727,16 +3724,8 @@ int rt2800_init_eeprom(struct rt2x00_dev *rt2x00dev)
         }
 
         /*
-         * Read frequency offset and RF programming sequence.
-         */
-        rt2x00_eeprom_read(rt2x00dev, EEPROM_FREQ, &eeprom);
-        rt2x00dev->freq_offset = rt2x00_get_field16(eeprom, EEPROM_FREQ_OFFSET);
-
-        /*
-         * Read external LNA informations.
+         * Determine external LNA informations.
          */
-        rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC_CONF1, &eeprom);
-
         if (rt2x00_get_field16(eeprom, EEPROM_NIC_CONF1_EXTERNAL_LNA_5G))
                 __set_bit(CAPABILITY_EXTERNAL_LNA_A, &rt2x00dev->cap_flags);
         if (rt2x00_get_field16(eeprom, EEPROM_NIC_CONF1_EXTERNAL_LNA_2G))
@@ -3749,6 +3738,18 @@ int rt2800_init_eeprom(struct rt2x00_dev *rt2x00dev)
                 __set_bit(CAPABILITY_HW_BUTTON, &rt2x00dev->cap_flags);
 
         /*
+         * Detect if this device has Bluetooth co-existence.
+         */
+        if (rt2x00_get_field16(eeprom, EEPROM_NIC_CONF1_BT_COEXIST))
+                __set_bit(CAPABILITY_BT_COEXIST, &rt2x00dev->cap_flags);
+
+        /*
+         * Read frequency offset and RF programming sequence.
+         */
+        rt2x00_eeprom_read(rt2x00dev, EEPROM_FREQ, &eeprom);
+        rt2x00dev->freq_offset = rt2x00_get_field16(eeprom, EEPROM_FREQ_OFFSET);
+
+        /*
          * Store led settings, for correct led behaviour.
          */
 #ifdef CONFIG_RT2X00_LIB_LEDS
@@ -3756,7 +3757,7 @@ int rt2800_init_eeprom(struct rt2x00_dev *rt2x00dev)
         rt2800_init_led(rt2x00dev, &rt2x00dev->led_assoc, LED_TYPE_ASSOC);
         rt2800_init_led(rt2x00dev, &rt2x00dev->led_qual, LED_TYPE_QUALITY);
 
-        rt2x00_eeprom_read(rt2x00dev, EEPROM_FREQ, &rt2x00dev->led_mcu_reg);
+        rt2x00dev->led_mcu_reg = eeprom;
 #endif /* CONFIG_RT2X00_LIB_LEDS */
 
         /*
diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c
index 08d3947fcb26..cc4a54f571b8 100644
--- a/drivers/net/wireless/rt2x00/rt2800pci.c
+++ b/drivers/net/wireless/rt2x00/rt2800pci.c
@@ -302,8 +302,8 @@ static int rt2800pci_write_firmware(struct rt2x00_dev *rt2x00dev,
         /*
          * Write firmware to device.
          */
-        rt2800_register_multiwrite(rt2x00dev, FIRMWARE_IMAGE_BASE,
-                                   data, len);
+        rt2x00pci_register_multiwrite(rt2x00dev, FIRMWARE_IMAGE_BASE,
+                                      data, len);
 
         rt2x00pci_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000);
         rt2x00pci_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00001);
diff --git a/drivers/net/wireless/rt2x00/rt2800usb.c b/drivers/net/wireless/rt2x00/rt2800usb.c
index 0d4e8fa3e1f8..0eb44cf2f44a 100644
--- a/drivers/net/wireless/rt2x00/rt2800usb.c
+++ b/drivers/net/wireless/rt2x00/rt2800usb.c
@@ -114,12 +114,12 @@ static bool rt2800usb_txstatus_pending(struct rt2x00_dev *rt2x00dev)
         return false;
 }
 
-static void rt2800usb_tx_sta_fifo_read_completed(struct rt2x00_dev *rt2x00dev,
+static bool rt2800usb_tx_sta_fifo_read_completed(struct rt2x00_dev *rt2x00dev,
                                                  int urb_status, u32 tx_status)
 {
         if (urb_status) {
                 WARNING(rt2x00dev, "rt2x00usb_register_read_async failed: %d\n", urb_status);
-                return;
+                return false;
         }
 
         /* try to read all TX_STA_FIFO entries before scheduling txdone_work */
@@ -129,13 +129,14 @@ static void rt2800usb_tx_sta_fifo_read_completed(struct rt2x00_dev *rt2x00dev,
                                 "drop tx status report.\n");
                         queue_work(rt2x00dev->workqueue, &rt2x00dev->txdone_work);
                 } else
-                        rt2x00usb_register_read_async(rt2x00dev, TX_STA_FIFO,
-                                                      rt2800usb_tx_sta_fifo_read_completed);
+                        return true;
         } else if (!kfifo_is_empty(&rt2x00dev->txstatus_fifo)) {
                 queue_work(rt2x00dev->workqueue, &rt2x00dev->txdone_work);
         } else if (rt2800usb_txstatus_pending(rt2x00dev)) {
-                mod_timer(&rt2x00dev->txstatus_timer, jiffies + msecs_to_jiffies(20));
+                mod_timer(&rt2x00dev->txstatus_timer, jiffies + msecs_to_jiffies(2));
         }
+
+        return false;
 }
 
 static void rt2800usb_tx_dma_done(struct queue_entry *entry)
@@ -493,7 +494,7 @@ static void rt2800usb_work_txdone(struct work_struct *work)
          * also delayed -> use a timer to retrieve it.
          */
         if (rt2800usb_txstatus_pending(rt2x00dev))
-                mod_timer(&rt2x00dev->txstatus_timer, jiffies + msecs_to_jiffies(20));
+                mod_timer(&rt2x00dev->txstatus_timer, jiffies + msecs_to_jiffies(2));
 }
 
 /*
@@ -633,6 +634,7 @@ static int rt2800usb_probe_hw(struct rt2x00_dev *rt2x00dev)
         __set_bit(CAPABILITY_LINK_TUNING, &rt2x00dev->cap_flags);
         __set_bit(REQUIRE_HT_TX_DESC, &rt2x00dev->cap_flags);
         __set_bit(REQUIRE_TXSTATUS_FIFO, &rt2x00dev->cap_flags);
+        __set_bit(REQUIRE_PS_AUTOWAKE, &rt2x00dev->cap_flags);
 
         setup_timer(&rt2x00dev->txstatus_timer,
                     rt2800usb_tx_sta_fifo_timeout,
diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h
index 9d1a158e2c33..c446db69bd3c 100644
--- a/drivers/net/wireless/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/rt2x00/rt2x00.h
@@ -662,6 +662,7 @@ enum rt2x00_state_flags {
          * Driver configuration
          */
         CONFIG_CHANNEL_HT40,
+        CONFIG_POWERSAVING,
 };
 
 /*
@@ -681,6 +682,7 @@ enum rt2x00_capability_flags {
         REQUIRE_TASKLET_CONTEXT,
         REQUIRE_SW_SEQNO,
         REQUIRE_HT_TX_DESC,
+        REQUIRE_PS_AUTOWAKE,
 
         /*
          * Capabilities
@@ -697,6 +699,7 @@ enum rt2x00_capability_flags {
         CAPABILITY_EXTERNAL_LNA_A,
         CAPABILITY_EXTERNAL_LNA_BG,
         CAPABILITY_DOUBLE_ANTENNA,
+        CAPABILITY_BT_COEXIST,
 };
 
 /*
@@ -874,10 +877,20 @@ struct rt2x00_dev {
         u8 calibration[2];
 
         /*
+         * Association id.
+         */
+        u16 aid;
+
+        /*
          * Beacon interval.
          */
         u16 beacon_int;
 
+        /**
+         * Timestamp of last received beacon
+         */
+        unsigned long last_beacon;
+
         /*
          * Low level statistics which will have
          * to be kept up to date while device is running.
@@ -906,6 +919,11 @@ struct rt2x00_dev {
         struct work_struct txdone_work;
 
         /*
+         * Powersaving work
+         */
+        struct delayed_work autowakeup_work;
+
+        /*
          * Data queue arrays for RX, TX, Beacon and ATIM.
          */
         unsigned int data_queues;
diff --git a/drivers/net/wireless/rt2x00/rt2x00config.c b/drivers/net/wireless/rt2x00/rt2x00config.c
index f78726404592..555180d8f4aa 100644
--- a/drivers/net/wireless/rt2x00/rt2x00config.c
+++ b/drivers/net/wireless/rt2x00/rt2x00config.c
@@ -100,6 +100,10 @@ void rt2x00lib_config_erp(struct rt2x00_dev *rt2x00dev,
         erp.basic_rates = bss_conf->basic_rates;
         erp.beacon_int = bss_conf->beacon_int;
 
+        /* Update the AID, this is needed for dynamic PS support */
+        rt2x00dev->aid = bss_conf->assoc ? bss_conf->aid : 0;
+        rt2x00dev->last_beacon = bss_conf->timestamp;
+
         /* Update global beacon interval time, this is needed for PS support */
         rt2x00dev->beacon_int = bss_conf->beacon_int;
 
@@ -204,6 +208,9 @@ void rt2x00lib_config(struct rt2x00_dev *rt2x00dev,
 {
         struct rt2x00lib_conf libconf;
         u16 hw_value;
+        u16 autowake_timeout;
+        u16 beacon_int;
+        u16 beacon_diff;
 
         memset(&libconf, 0, sizeof(libconf));
 
@@ -227,6 +234,10 @@ void rt2x00lib_config(struct rt2x00_dev *rt2x00dev,
                        sizeof(libconf.channel));
         }
 
+        if (test_bit(REQUIRE_PS_AUTOWAKE, &rt2x00dev->cap_flags) &&
+            (ieee80211_flags & IEEE80211_CONF_CHANGE_PS))
+                cancel_delayed_work_sync(&rt2x00dev->autowakeup_work);
+
         /*
          * Start configuration.
          */
@@ -239,6 +250,26 @@ void rt2x00lib_config(struct rt2x00_dev *rt2x00dev,
         if (ieee80211_flags & IEEE80211_CONF_CHANGE_CHANNEL)
                 rt2x00link_reset_tuner(rt2x00dev, false);
 
+        if (test_bit(REQUIRE_PS_AUTOWAKE, &rt2x00dev->cap_flags) &&
+            (ieee80211_flags & IEEE80211_CONF_CHANGE_PS) &&
+            (conf->flags & IEEE80211_CONF_PS)) {
+                beacon_diff = (long)jiffies - (long)rt2x00dev->last_beacon;
+                beacon_int = msecs_to_jiffies(rt2x00dev->beacon_int);
+
+                if (beacon_diff > beacon_int)
+                        beacon_diff = 0;
+
+                autowake_timeout = (conf->max_sleep_period * beacon_int) - beacon_diff;
+                queue_delayed_work(rt2x00dev->workqueue,
+                                   &rt2x00dev->autowakeup_work,
+                                   autowake_timeout - 15);
+        }
+
+        if (conf->flags & IEEE80211_CONF_PS)
+                set_bit(CONFIG_POWERSAVING, &rt2x00dev->flags);
+        else
+                clear_bit(CONFIG_POWERSAVING, &rt2x00dev->flags);
+
         rt2x00dev->curr_band = conf->channel->band;
         rt2x00dev->curr_freq = conf->channel->center_freq;
         rt2x00dev->tx_power = conf->power_level;
diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c
index 7776d9f1f297..2eb5196977fd 100644
--- a/drivers/net/wireless/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
@@ -141,6 +141,16 @@ static void rt2x00lib_intf_scheduled(struct work_struct *work)
                                             rt2x00dev);
 }
 
+static void rt2x00lib_autowakeup(struct work_struct *work)
+{
+        struct rt2x00_dev *rt2x00dev =
+            container_of(work, struct rt2x00_dev, autowakeup_work.work);
+
+        if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
+                ERROR(rt2x00dev, "Device failed to wakeup.\n");
+        clear_bit(CONFIG_POWERSAVING, &rt2x00dev->flags);
+}
+
 /*
  * Interrupt context handlers.
  */
@@ -416,6 +426,77 @@ void rt2x00lib_txdone_noinfo(struct queue_entry *entry, u32 status)
 }
 EXPORT_SYMBOL_GPL(rt2x00lib_txdone_noinfo);
 
+static u8 *rt2x00lib_find_ie(u8 *data, unsigned int len, u8 ie)
+{
+        struct ieee80211_mgmt *mgmt = (void *)data;
+        u8 *pos, *end;
+
+        pos = (u8 *)mgmt->u.beacon.variable;
+        end = data + len;
+        while (pos < end) {
+                if (pos + 2 + pos[1] > end)
+                        return NULL;
+
+                if (pos[0] == ie)
+                        return pos;
+
+                pos += 2 + pos[1];
+        }
+
+        return NULL;
+}
+
+static void rt2x00lib_rxdone_check_ps(struct rt2x00_dev *rt2x00dev,
+                                      struct sk_buff *skb,
+                                      struct rxdone_entry_desc *rxdesc)
+{
+        struct ieee80211_hdr *hdr = (void *) skb->data;
+        struct ieee80211_tim_ie *tim_ie;
+        u8 *tim;
+        u8 tim_len;
+        bool cam;
+
+        /* If this is not a beacon, or if mac80211 has no powersaving
+         * configured, or if the device is already in powersaving mode
+         * we can exit now. */
+        if (likely(!ieee80211_is_beacon(hdr->frame_control) ||
+                   !(rt2x00dev->hw->conf.flags & IEEE80211_CONF_PS)))
+                return;
+
+        /* min. beacon length + FCS_LEN */
+        if (skb->len <= 40 + FCS_LEN)
+                return;
+
+        /* and only beacons from the associated BSSID, please */
+        if (!(rxdesc->dev_flags & RXDONE_MY_BSS) ||
+            !rt2x00dev->aid)
+                return;
+
+        rt2x00dev->last_beacon = jiffies;
+
+        tim = rt2x00lib_find_ie(skb->data, skb->len - FCS_LEN, WLAN_EID_TIM);
+        if (!tim)
+                return;
+
+        if (tim[1] < sizeof(*tim_ie))
+                return;
+
+        tim_len = tim[1];
+        tim_ie = (struct ieee80211_tim_ie *) &tim[2];
+
+        /* Check whenever the PHY can be turned off again. */
+
+        /* 1. What about buffered unicast traffic for our AID? */
+        cam = ieee80211_check_tim(tim_ie, tim_len, rt2x00dev->aid);
+
+        /* 2. Maybe the AP wants to send multicast/broadcast data? */
+        cam |= (tim_ie->bitmap_ctrl & 0x01);
+
+        if (!cam && !test_bit(CONFIG_POWERSAVING, &rt2x00dev->flags))
+                rt2x00lib_config(rt2x00dev, &rt2x00dev->hw->conf,
+                                 IEEE80211_CONF_CHANGE_PS);
+}
+
 static int rt2x00lib_rxdone_read_signal(struct rt2x00_dev *rt2x00dev,
                                         struct rxdone_entry_desc *rxdesc)
 {
@@ -531,6 +612,12 @@ void rt2x00lib_rxdone(struct queue_entry *entry)
                 rxdesc.flags |= RX_FLAG_HT;
 
         /*
+         * Check if this is a beacon, and more frames have been
+         * buffered while we were in powersaving mode.
+         */
+        rt2x00lib_rxdone_check_ps(rt2x00dev, entry->skb, &rxdesc);
+
+        /*
          * Update extra components
          */
         rt2x00link_update_stats(rt2x00dev, entry->skb, &rxdesc);
@@ -1017,6 +1104,7 @@ int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev)
         }
 
         INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled);
+        INIT_DELAYED_WORK(&rt2x00dev->autowakeup_work, rt2x00lib_autowakeup);
 
         /*
          * Let the driver probe the device to detect the capabilities.
diff --git a/drivers/net/wireless/rt2x00/rt2x00usb.c b/drivers/net/wireless/rt2x00/rt2x00usb.c
index cb208d589ff8..39e1052123e3 100644
--- a/drivers/net/wireless/rt2x00/rt2x00usb.c
+++ b/drivers/net/wireless/rt2x00/rt2x00usb.c
@@ -170,19 +170,22 @@ struct rt2x00_async_read_data {
         __le32 reg;
         struct usb_ctrlrequest cr;
         struct rt2x00_dev *rt2x00dev;
-        void (*callback)(struct rt2x00_dev *,int,u32);
+        bool (*callback)(struct rt2x00_dev *, int, u32);
 };
 
 static void rt2x00usb_register_read_async_cb(struct urb *urb)
 {
         struct rt2x00_async_read_data *rd = urb->context;
-        rd->callback(rd->rt2x00dev, urb->status, le32_to_cpu(rd->reg));
-        kfree(urb->context);
+        if (rd->callback(rd->rt2x00dev, urb->status, le32_to_cpu(rd->reg))) {
+                if (usb_submit_urb(urb, GFP_ATOMIC) < 0)
+                        kfree(rd);
+        } else
+                kfree(rd);
 }
 
 void rt2x00usb_register_read_async(struct rt2x00_dev *rt2x00dev,
                                    const unsigned int offset,
-                                   void (*callback)(struct rt2x00_dev*,int,u32))
+                                   bool (*callback)(struct rt2x00_dev*, int, u32))
 {
         struct usb_device *usb_dev = to_usb_device_intf(rt2x00dev->dev);
         struct urb *urb;
diff --git a/drivers/net/wireless/rt2x00/rt2x00usb.h b/drivers/net/wireless/rt2x00/rt2x00usb.h
index 64be34f612f6..323ca7b2b095 100644
--- a/drivers/net/wireless/rt2x00/rt2x00usb.h
+++ b/drivers/net/wireless/rt2x00/rt2x00usb.h
@@ -349,10 +349,12 @@ int rt2x00usb_regbusy_read(struct rt2x00_dev *rt2x00dev,
  * be called from atomic context.  The callback will be called
  * when the URB completes. Otherwise the function is similar
  * to rt2x00usb_register_read().
+ * When the callback function returns false, the memory will be cleaned up,
+ * when it returns true, the urb will be fired again.
  */
 void rt2x00usb_register_read_async(struct rt2x00_dev *rt2x00dev,
                                    const unsigned int offset,
-                                   void (*callback)(struct rt2x00_dev*,int,u32));
+                                   bool (*callback)(struct rt2x00_dev*, int, u32));
 
 /*
  * Radio handlers
diff --git a/drivers/net/wireless/rt2x00/rt73usb.c b/drivers/net/wireless/rt2x00/rt73usb.c
index a6ce7d6cbdfa..ad20953cbf05 100644
--- a/drivers/net/wireless/rt2x00/rt73usb.c
+++ b/drivers/net/wireless/rt2x00/rt73usb.c
@@ -2209,6 +2209,7 @@ static int rt73usb_probe_hw(struct rt2x00_dev *rt2x00dev)
         if (!modparam_nohwcrypt)
                 __set_bit(CAPABILITY_HW_CRYPTO, &rt2x00dev->cap_flags);
         __set_bit(CAPABILITY_LINK_TUNING, &rt2x00dev->cap_flags);
+        __set_bit(REQUIRE_PS_AUTOWAKE, &rt2x00dev->cap_flags);
 
         /*
          * Set the rssi offset.