Merge branch 'sh/stable-updates'

Conflicts:
	arch/sh/kernel/dwarf.c
	drivers/dma/shdma.c

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

21 files changed, 204 insertions, 72 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-3945-rs.c b/drivers/net/wireless/iwlwifi/iwl-3945-rs.c
index 47909f94271e..902c4d4293e9 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945-rs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-3945-rs.c
@@ -27,6 +27,7 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/skbuff.h>
+#include <linux/slab.h>
 #include <linux/wireless.h>
 #include <net/mac80211.h>
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.c b/drivers/net/wireless/iwlwifi/iwl-3945.c
index e0678d921055..0728054a22d4 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945.c
+++ b/drivers/net/wireless/iwlwifi/iwl-3945.c
@@ -27,6 +27,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <linux/pci.h>
 #include <linux/dma-mapping.h>
 #include <linux/delay.h>
diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c
index 1bd2cd836026..8972166386cb 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965.c
+++ b/drivers/net/wireless/iwlwifi/iwl-4965.c
@@ -2015,7 +2015,9 @@ static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
                         IWL_DEBUG_TX_REPLY(priv, "Retry scheduler reclaim scd_ssn "
                                            "%d index %d\n", scd_ssn , index);
                         freed = iwl_tx_queue_reclaim(priv, txq_id, index);
-                        iwl_free_tfds_in_queue(priv, sta_id, tid, freed);
+                        if (qc)
+                                iwl_free_tfds_in_queue(priv, sta_id,
+                                                       tid, freed);
 
                         if (priv->mac80211_registered &&
                             (iwl_queue_space(&txq->q) > txq->q.low_mark) &&
@@ -2042,13 +2044,14 @@ static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
 
                 freed = iwl_tx_queue_reclaim(priv, txq_id, index);
                 if (qc && likely(sta_id != IWL_INVALID_STATION))
-                        priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
+                        iwl_free_tfds_in_queue(priv, sta_id, tid, freed);
+                else if (sta_id == IWL_INVALID_STATION)
+                        IWL_DEBUG_TX_REPLY(priv, "Station not known\n");
 
                 if (priv->mac80211_registered &&
                     (iwl_queue_space(&txq->q) > txq->q.low_mark))
                         iwl_wake_queue(priv, txq_id);
         }
-
         if (qc && likely(sta_id != IWL_INVALID_STATION))
                 iwl_txq_check_empty(priv, sta_id, tid, txq_id);
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-6000.c b/drivers/net/wireless/iwlwifi/iwl-6000.c
index c4844adff92a..92b3e64fc14d 100644
--- a/drivers/net/wireless/iwlwifi/iwl-6000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-6000.c
@@ -259,7 +259,7 @@ static struct iwl_lib_ops iwl6000_lib = {
                         EEPROM_5000_REG_BAND_3_CHANNELS,
                         EEPROM_5000_REG_BAND_4_CHANNELS,
                         EEPROM_5000_REG_BAND_5_CHANNELS,
-                        EEPROM_5000_REG_BAND_24_HT40_CHANNELS,
+                        EEPROM_6000_REG_BAND_24_HT40_CHANNELS,
                         EEPROM_5000_REG_BAND_52_HT40_CHANNELS
                 },
                 .verify_signature  = iwlcore_eeprom_verify_signature,
@@ -323,7 +323,7 @@ static struct iwl_lib_ops iwl6050_lib = {
                         EEPROM_5000_REG_BAND_3_CHANNELS,
                         EEPROM_5000_REG_BAND_4_CHANNELS,
                         EEPROM_5000_REG_BAND_5_CHANNELS,
-                        EEPROM_5000_REG_BAND_24_HT40_CHANNELS,
+                        EEPROM_6000_REG_BAND_24_HT40_CHANNELS,
                         EEPROM_5000_REG_BAND_52_HT40_CHANNELS
                 },
                 .verify_signature  = iwlcore_eeprom_verify_signature,
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
index 8bf7c20b9d39..1460116d329f 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
@@ -26,6 +26,7 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/skbuff.h>
+#include <linux/slab.h>
 #include <linux/wireless.h>
 #include <net/mac80211.h>
 
@@ -345,6 +346,17 @@ static inline int get_num_of_ant_from_rate(u32 rate_n_flags)
                !!(rate_n_flags & RATE_MCS_ANT_C_MSK);
 }
 
+/*
+ * Static function to get the expected throughput from an iwl_scale_tbl_info
+ * that wraps a NULL pointer check
+ */
+static s32 get_expected_tpt(struct iwl_scale_tbl_info *tbl, int rs_index)
+{
+        if (tbl->expected_tpt)
+                return tbl->expected_tpt[rs_index];
+        return 0;
+}
+
 /**
  * rs_collect_tx_data - Update the success/failure sliding window
  *
@@ -352,19 +364,21 @@ static inline int get_num_of_ant_from_rate(u32 rate_n_flags)
  * at this rate.  window->data contains the bitmask of successful
  * packets.
  */
-static int rs_collect_tx_data(struct iwl_rate_scale_data *windows,
-                              int scale_index, s32 tpt, int attempts,
-                              int successes)
+static int rs_collect_tx_data(struct iwl_scale_tbl_info *tbl,
+                              int scale_index, int attempts, int successes)
 {
         struct iwl_rate_scale_data *window = NULL;
         static const u64 mask = (((u64)1) << (IWL_RATE_MAX_WINDOW - 1));
-        s32 fail_count;
+        s32 fail_count, tpt;
 
         if (scale_index < 0 || scale_index >= IWL_RATE_COUNT)
                 return -EINVAL;
 
         /* Select window for current tx bit rate */
-        window = &(windows[scale_index]);
+        window = &(tbl->win[scale_index]);
+
+        /* Get expected throughput */
+        tpt = get_expected_tpt(tbl, scale_index);
 
         /*
          * Keep track of only the latest 62 tx frame attempts in this rate's
@@ -738,16 +752,6 @@ static bool table_type_matches(struct iwl_scale_tbl_info *a,
         return (a->lq_type == b->lq_type) && (a->ant_type == b->ant_type) &&
                 (a->is_SGI == b->is_SGI);
 }
-/*
- * Static function to get the expected throughput from an iwl_scale_tbl_info
- * that wraps a NULL pointer check
- */
-static s32 get_expected_tpt(struct iwl_scale_tbl_info *tbl, int rs_index)
-{
-        if (tbl->expected_tpt)
-                return tbl->expected_tpt[rs_index];
-        return 0;
-}
 
 /*
  * mac80211 sends us Tx status
@@ -764,12 +768,10 @@ static void rs_tx_status(void *priv_r, struct ieee80211_supported_band *sband,
         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
         struct iwl_priv *priv = (struct iwl_priv *)priv_r;
         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
-        struct iwl_rate_scale_data *window = NULL;
         enum mac80211_rate_control_flags mac_flags;
         u32 tx_rate;
         struct iwl_scale_tbl_info tbl_type;
-        struct iwl_scale_tbl_info *curr_tbl, *other_tbl;
-        s32 tpt = 0;
+        struct iwl_scale_tbl_info *curr_tbl, *other_tbl, *tmp_tbl;
 
         IWL_DEBUG_RATE_LIMIT(priv, "get frame ack response, update rate scale window\n");
 
@@ -852,7 +854,6 @@ static void rs_tx_status(void *priv_r, struct ieee80211_supported_band *sband,
                 IWL_DEBUG_RATE(priv, "Neither active nor search matches tx rate\n");
                 return;
         }
-        window = (struct iwl_rate_scale_data *)&(curr_tbl->win[0]);
 
         /*
          * Updating the frame history depends on whether packets were
@@ -865,8 +866,7 @@ static void rs_tx_status(void *priv_r, struct ieee80211_supported_band *sband,
                 tx_rate = le32_to_cpu(table->rs_table[0].rate_n_flags);
                 rs_get_tbl_info_from_mcs(tx_rate, priv->band, &tbl_type,
                                 &rs_index);
-                tpt = get_expected_tpt(curr_tbl, rs_index);
-                rs_collect_tx_data(window, rs_index, tpt,
+                rs_collect_tx_data(curr_tbl, rs_index,
                                    info->status.ampdu_ack_len,
                                    info->status.ampdu_ack_map);
 
@@ -896,19 +896,13 @@ static void rs_tx_status(void *priv_r, struct ieee80211_supported_band *sband,
                          * table as active/search.
                          */
                         if (table_type_matches(&tbl_type, curr_tbl))
-                                tpt = get_expected_tpt(curr_tbl, rs_index);
+                                tmp_tbl = curr_tbl;
                         else if (table_type_matches(&tbl_type, other_tbl))
-                                tpt = get_expected_tpt(other_tbl, rs_index);
+                                tmp_tbl = other_tbl;
                         else
                                 continue;
-
-                        /* Constants mean 1 transmission, 0 successes */
-                        if (i < retries)
-                                rs_collect_tx_data(window, rs_index, tpt, 1,
-                                                0);
-                        else
-                                rs_collect_tx_data(window, rs_index, tpt, 1,
-                                                legacy_success);
+                        rs_collect_tx_data(tmp_tbl, rs_index, 1,
+                                           i < retries ? 0 : legacy_success);
                 }
 
                 /* Update success/fail counts if not searching for new mode */
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index 818367b57bab..bdff56583e11 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -31,6 +31,7 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/pci.h>
+#include <linux/slab.h>
 #include <linux/dma-mapping.h>
 #include <linux/delay.h>
 #include <linux/sched.h>
@@ -1258,7 +1259,15 @@ static void iwl_irq_tasklet(struct iwl_priv *priv)
         /* Ack/clear/reset pending uCode interrupts.
          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
          */
-        iwl_write32(priv, CSR_INT, priv->inta);
+        /* There is a hardware bug in the interrupt mask function that some
+         * interrupts (i.e. CSR_INT_BIT_SCD) can still be generated even if
+         * they are disabled in the CSR_INT_MASK register. Furthermore the
+         * ICT interrupt handling mechanism has another bug that might cause
+         * these unmasked interrupts fail to be detected. We workaround the
+         * hardware bugs here by ACKing all the possible interrupts so that
+         * interrupt coalescing can still be achieved.
+         */
+        iwl_write32(priv, CSR_INT, priv->inta | ~priv->inta_mask);
 
         inta = priv->inta;
 
@@ -2644,7 +2653,7 @@ static int iwl_mac_setup_register(struct iwl_priv *priv)
                 BIT(NL80211_IFTYPE_STATION) |
                 BIT(NL80211_IFTYPE_ADHOC);
 
-        hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY |
+        hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
                             WIPHY_FLAG_DISABLE_BEACON_HINTS;
 
         /*
@@ -3322,6 +3331,7 @@ static void iwl_cancel_deferred_work(struct iwl_priv *priv)
 
         cancel_delayed_work_sync(&priv->init_alive_start);
         cancel_delayed_work(&priv->scan_check);
+        cancel_work_sync(&priv->start_internal_scan);
         cancel_delayed_work(&priv->alive_start);
         cancel_work_sync(&priv->beacon_update);
         del_timer_sync(&priv->statistics_periodic);
diff --git a/drivers/net/wireless/iwlwifi/iwl-calib.c b/drivers/net/wireless/iwlwifi/iwl-calib.c
index 845831ac053e..8b516c5ff0bb 100644
--- a/drivers/net/wireless/iwlwifi/iwl-calib.c
+++ b/drivers/net/wireless/iwlwifi/iwl-calib.c
@@ -60,6 +60,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *****************************************************************************/
 
+#include <linux/slab.h>
 #include <net/mac80211.h>
 
 #include "iwl-dev.h"
@@ -807,6 +808,18 @@ void iwl_chain_noise_calibration(struct iwl_priv *priv,
                 }
         }
 
+        /*
+         * The above algorithm sometimes fails when the ucode
+         * reports 0 for all chains. It's not clear why that
+         * happens to start with, but it is then causing trouble
+         * because this can make us enable more chains than the
+         * hardware really has.
+         *
+         * To be safe, simply mask out any chains that we know
+         * are not on the device.
+         */
+        active_chains &= priv->hw_params.valid_rx_ant;
+
         num_tx_chains = 0;
         for (i = 0; i < NUM_RX_CHAINS; i++) {
                 /* loops on all the bits of
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c
index 112149e9b31e..049b652bcb5e 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.c
+++ b/drivers/net/wireless/iwlwifi/iwl-core.c
@@ -30,6 +30,7 @@
 #include <linux/module.h>
 #include <linux/etherdevice.h>
 #include <linux/sched.h>
+#include <linux/slab.h>
 #include <net/mac80211.h>
 
 #include "iwl-eeprom.h"
@@ -307,10 +308,13 @@ int iwl_hw_nic_init(struct iwl_priv *priv)
 
         spin_unlock_irqrestore(&priv->lock, flags);
 
-        /* Allocate and init all Tx and Command queues */
-        ret = iwl_txq_ctx_reset(priv);
-        if (ret)
-                return ret;
+        /* Allocate or reset and init all Tx and Command queues */
+        if (!priv->txq) {
+                ret = iwl_txq_ctx_alloc(priv);
+                if (ret)
+                        return ret;
+        } else
+                iwl_txq_ctx_reset(priv);
 
         set_bit(STATUS_INIT, &priv->status);
 
@@ -3354,7 +3358,6 @@ static void iwl_force_rf_reset(struct iwl_priv *priv)
          */
         IWL_DEBUG_INFO(priv, "perform radio reset.\n");
         iwl_internal_short_hw_scan(priv);
-        return;
 }
 
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.h b/drivers/net/wireless/iwlwifi/iwl-core.h
index 4ef7739f9e8e..36940a9ec6b9 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.h
+++ b/drivers/net/wireless/iwlwifi/iwl-core.h
@@ -442,7 +442,8 @@ void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb);
 /*****************************************************
 * TX
 ******************************************************/
-int iwl_txq_ctx_reset(struct iwl_priv *priv);
+int iwl_txq_ctx_alloc(struct iwl_priv *priv);
+void iwl_txq_ctx_reset(struct iwl_priv *priv);
 void iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq);
 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
                                  struct iwl_tx_queue *txq,
@@ -456,6 +457,8 @@ void iwl_free_tfds_in_queue(struct iwl_priv *priv,
 void iwl_txq_update_write_ptr(struct iwl_priv *priv, struct iwl_tx_queue *txq);
 int iwl_tx_queue_init(struct iwl_priv *priv, struct iwl_tx_queue *txq,
                       int slots_num, u32 txq_id);
+void iwl_tx_queue_reset(struct iwl_priv *priv, struct iwl_tx_queue *txq,
+                        int slots_num, u32 txq_id);
 void iwl_tx_queue_free(struct iwl_priv *priv, int txq_id);
 int iwl_tx_agg_start(struct iwl_priv *priv, const u8 *ra, u16 tid, u16 *ssn);
 int iwl_tx_agg_stop(struct iwl_priv *priv , const u8 *ra, u16 tid);
@@ -503,7 +506,7 @@ void iwl_init_scan_params(struct iwl_priv *priv);
 int iwl_scan_cancel(struct iwl_priv *priv);
 int iwl_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms);
 int iwl_mac_hw_scan(struct ieee80211_hw *hw, struct cfg80211_scan_request *req);
-int iwl_internal_short_hw_scan(struct iwl_priv *priv);
+void iwl_internal_short_hw_scan(struct iwl_priv *priv);
 int iwl_force_reset(struct iwl_priv *priv, int mode);
 u16 iwl_fill_probe_req(struct iwl_priv *priv, struct ieee80211_mgmt *frame,
                        const u8 *ie, int ie_len, int left);
diff --git a/drivers/net/wireless/iwlwifi/iwl-debugfs.c b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
index 7bf44f146799..b6e1b0ebe230 100644
--- a/drivers/net/wireless/iwlwifi/iwl-debugfs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
@@ -26,6 +26,7 @@
  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  *****************************************************************************/
 
+#include <linux/slab.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/debugfs.h>
diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h
index 6054c5fba0c1..ef1720a852e9 100644
--- a/drivers/net/wireless/iwlwifi/iwl-dev.h
+++ b/drivers/net/wireless/iwlwifi/iwl-dev.h
@@ -1296,6 +1296,7 @@ struct iwl_priv {
         struct work_struct tt_work;
         struct work_struct ct_enter;
         struct work_struct ct_exit;
+        struct work_struct start_internal_scan;
 
         struct tasklet_struct irq_tasklet;
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-devtrace.c b/drivers/net/wireless/iwlwifi/iwl-devtrace.c
index 36580d8d8b8d..2ffc2edbf4f0 100644
--- a/drivers/net/wireless/iwlwifi/iwl-devtrace.c
+++ b/drivers/net/wireless/iwlwifi/iwl-devtrace.c
@@ -28,6 +28,8 @@
 
 /* sparse doesn't like tracepoint macros */
 #ifndef __CHECKER__
+#include "iwl-dev.h"
+
 #define CREATE_TRACE_POINTS
 #include "iwl-devtrace.h"
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-devtrace.h b/drivers/net/wireless/iwlwifi/iwl-devtrace.h
index ff4d012ce260..ae7319bb3a99 100644
--- a/drivers/net/wireless/iwlwifi/iwl-devtrace.h
+++ b/drivers/net/wireless/iwlwifi/iwl-devtrace.h
@@ -28,7 +28,6 @@
 #define __IWLWIFI_DEVICE_TRACE
 
 #include <linux/tracepoint.h>
-#include "iwl-dev.h"
 
 #if !defined(CONFIG_IWLWIFI_DEVICE_TRACING) || defined(__CHECKER__)
 #undef TRACE_EVENT
diff --git a/drivers/net/wireless/iwlwifi/iwl-eeprom.c b/drivers/net/wireless/iwlwifi/iwl-eeprom.c
index fd37152abae3..fb5bb487f3bc 100644
--- a/drivers/net/wireless/iwlwifi/iwl-eeprom.c
+++ b/drivers/net/wireless/iwlwifi/iwl-eeprom.c
@@ -63,6 +63,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <linux/init.h>
 
 #include <net/mac80211.h>
diff --git a/drivers/net/wireless/iwlwifi/iwl-eeprom.h b/drivers/net/wireless/iwlwifi/iwl-eeprom.h
index 4e1ba824dc50..8171c701e4e1 100644
--- a/drivers/net/wireless/iwlwifi/iwl-eeprom.h
+++ b/drivers/net/wireless/iwlwifi/iwl-eeprom.h
@@ -203,6 +203,10 @@ struct iwl_eeprom_enhanced_txpwr {
 #define EEPROM_5000_REG_BAND_52_HT40_CHANNELS  ((0x92)\
                 | INDIRECT_ADDRESS | INDIRECT_REGULATORY)   /* 22  bytes */
 
+/* 6000 regulatory - indirect access */
+#define EEPROM_6000_REG_BAND_24_HT40_CHANNELS  ((0x80)\
+                | INDIRECT_ADDRESS | INDIRECT_REGULATORY)   /* 14  bytes */
+
 /* 6000 and up regulatory tx power - indirect access */
 /* max. elements per section */
 #define EEPROM_MAX_TXPOWER_SECTION_ELEMENTS     (8)
diff --git a/drivers/net/wireless/iwlwifi/iwl-io.h b/drivers/net/wireless/iwlwifi/iwl-io.h
index c719baf2585a..16eb3ced9b30 100644
--- a/drivers/net/wireless/iwlwifi/iwl-io.h
+++ b/drivers/net/wireless/iwlwifi/iwl-io.h
@@ -31,6 +31,7 @@
 
 #include <linux/io.h>
 
+#include "iwl-dev.h"
 #include "iwl-debug.h"
 #include "iwl-devtrace.h"
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-power.c b/drivers/net/wireless/iwlwifi/iwl-power.c
index 1a1a9f081cc7..548dac2f6a96 100644
--- a/drivers/net/wireless/iwlwifi/iwl-power.c
+++ b/drivers/net/wireless/iwlwifi/iwl-power.c
@@ -29,6 +29,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <linux/init.h>
 
 #include <net/mac80211.h>
diff --git a/drivers/net/wireless/iwlwifi/iwl-rx.c b/drivers/net/wireless/iwlwifi/iwl-rx.c
index df257bc15f49..e5eb339107dd 100644
--- a/drivers/net/wireless/iwlwifi/iwl-rx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-rx.c
@@ -28,6 +28,7 @@
  *****************************************************************************/
 
 #include <linux/etherdevice.h>
+#include <linux/slab.h>
 #include <net/mac80211.h>
 #include <asm/unaligned.h>
 #include "iwl-eeprom.h"
diff --git a/drivers/net/wireless/iwlwifi/iwl-scan.c b/drivers/net/wireless/iwlwifi/iwl-scan.c
index bd2f7c420563..12e455a4b90e 100644
--- a/drivers/net/wireless/iwlwifi/iwl-scan.c
+++ b/drivers/net/wireless/iwlwifi/iwl-scan.c
@@ -25,6 +25,7 @@
  *  Intel Linux Wireless <ilw@linux.intel.com>
  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  *****************************************************************************/
+#include <linux/slab.h>
 #include <linux/types.h>
 #include <linux/etherdevice.h>
 #include <net/mac80211.h>
@@ -469,6 +470,8 @@ EXPORT_SYMBOL(iwl_init_scan_params);
 
 static int iwl_scan_initiate(struct iwl_priv *priv)
 {
+        WARN_ON(!mutex_is_locked(&priv->mutex));
+
         IWL_DEBUG_INFO(priv, "Starting scan...\n");
         set_bit(STATUS_SCANNING, &priv->status);
         priv->is_internal_short_scan = false;
@@ -546,24 +549,31 @@ EXPORT_SYMBOL(iwl_mac_hw_scan);
  * internal short scan, this function should only been called while associated.
  * It will reset and tune the radio to prevent possible RF related problem
  */
-int iwl_internal_short_hw_scan(struct iwl_priv *priv)
+void iwl_internal_short_hw_scan(struct iwl_priv *priv)
 {
-        int ret = 0;
+        queue_work(priv->workqueue, &priv->start_internal_scan);
+}
+
+static void iwl_bg_start_internal_scan(struct work_struct *work)
+{
+        struct iwl_priv *priv =
+                container_of(work, struct iwl_priv, start_internal_scan);
+
+        mutex_lock(&priv->mutex);
 
         if (!iwl_is_ready_rf(priv)) {
-                ret = -EIO;
                 IWL_DEBUG_SCAN(priv, "not ready or exit pending\n");
-                goto out;
+                goto unlock;
         }
+
         if (test_bit(STATUS_SCANNING, &priv->status)) {
                 IWL_DEBUG_SCAN(priv, "Scan already in progress.\n");
-                ret = -EAGAIN;
-                goto out;
+                goto unlock;
         }
+
         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
                 IWL_DEBUG_SCAN(priv, "Scan request while abort pending\n");
-                ret = -EAGAIN;
-                goto out;
+                goto unlock;
         }
 
         priv->scan_bands = 0;
@@ -576,9 +586,8 @@ int iwl_internal_short_hw_scan(struct iwl_priv *priv)
         set_bit(STATUS_SCANNING, &priv->status);
         priv->is_internal_short_scan = true;
         queue_work(priv->workqueue, &priv->request_scan);
-
-out:
-        return ret;
+ unlock:
+        mutex_unlock(&priv->mutex);
 }
 EXPORT_SYMBOL(iwl_internal_short_hw_scan);
 
@@ -964,6 +973,7 @@ void iwl_setup_scan_deferred_work(struct iwl_priv *priv)
         INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
         INIT_WORK(&priv->request_scan, iwl_bg_request_scan);
         INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
+        INIT_WORK(&priv->start_internal_scan, iwl_bg_start_internal_scan);
         INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
 }
 EXPORT_SYMBOL(iwl_setup_scan_deferred_work);
diff --git a/drivers/net/wireless/iwlwifi/iwl-tx.c b/drivers/net/wireless/iwlwifi/iwl-tx.c
index 8c12311dbb0a..8dd0c036d547 100644
--- a/drivers/net/wireless/iwlwifi/iwl-tx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-tx.c
@@ -29,6 +29,7 @@
 
 #include <linux/etherdevice.h>
 #include <linux/sched.h>
+#include <linux/slab.h>
 #include <net/mac80211.h>
 #include "iwl-eeprom.h"
 #include "iwl-dev.h"
@@ -193,10 +194,34 @@ void iwl_cmd_queue_free(struct iwl_priv *priv)
         struct iwl_queue *q = &txq->q;
         struct device *dev = &priv->pci_dev->dev;
         int i;
+        bool huge = false;
 
         if (q->n_bd == 0)
                 return;
 
+        for (; q->read_ptr != q->write_ptr;
+             q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
+                /* we have no way to tell if it is a huge cmd ATM */
+                i = get_cmd_index(q, q->read_ptr, 0);
+
+                if (txq->meta[i].flags & CMD_SIZE_HUGE) {
+                        huge = true;
+                        continue;
+                }
+
+                pci_unmap_single(priv->pci_dev,
+                                 pci_unmap_addr(&txq->meta[i], mapping),
+                                 pci_unmap_len(&txq->meta[i], len),
+                                 PCI_DMA_BIDIRECTIONAL);
+        }
+        if (huge) {
+                i = q->n_window;
+                pci_unmap_single(priv->pci_dev,
+                                 pci_unmap_addr(&txq->meta[i], mapping),
+                                 pci_unmap_len(&txq->meta[i], len),
+                                 PCI_DMA_BIDIRECTIONAL);
+        }
+
         /* De-alloc array of command/tx buffers */
         for (i = 0; i <= TFD_CMD_SLOTS; i++)
                 kfree(txq->cmd[i]);
@@ -409,6 +434,26 @@ out_free_arrays:
 }
 EXPORT_SYMBOL(iwl_tx_queue_init);
 
+void iwl_tx_queue_reset(struct iwl_priv *priv, struct iwl_tx_queue *txq,
+                        int slots_num, u32 txq_id)
+{
+        int actual_slots = slots_num;
+
+        if (txq_id == IWL_CMD_QUEUE_NUM)
+                actual_slots++;
+
+        memset(txq->meta, 0, sizeof(struct iwl_cmd_meta) * actual_slots);
+
+        txq->need_update = 0;
+
+        /* Initialize queue's high/low-water marks, and head/tail indexes */
+        iwl_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
+
+        /* Tell device where to find queue */
+        priv->cfg->ops->lib->txq_init(priv, txq);
+}
+EXPORT_SYMBOL(iwl_tx_queue_reset);
+
 /**
  * iwl_hw_txq_ctx_free - Free TXQ Context
  *
@@ -420,8 +465,7 @@ void iwl_hw_txq_ctx_free(struct iwl_priv *priv)
 
         /* Tx queues */
         if (priv->txq) {
-                for (txq_id = 0; txq_id < priv->hw_params.max_txq_num;
-                     txq_id++)
+                for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++)
                         if (txq_id == IWL_CMD_QUEUE_NUM)
                                 iwl_cmd_queue_free(priv);
                         else
@@ -437,15 +481,15 @@ void iwl_hw_txq_ctx_free(struct iwl_priv *priv)
 EXPORT_SYMBOL(iwl_hw_txq_ctx_free);
 
 /**
- * iwl_txq_ctx_reset - Reset TX queue context
- * Destroys all DMA structures and initialize them again
+ * iwl_txq_ctx_alloc - allocate TX queue context
+ * Allocate all Tx DMA structures and initialize them
  *
  * @param priv
  * @return error code
  */
-int iwl_txq_ctx_reset(struct iwl_priv *priv)
+int iwl_txq_ctx_alloc(struct iwl_priv *priv)
 {
-        int ret = 0;
+        int ret;
         int txq_id, slots_num;
         unsigned long flags;
 
@@ -503,8 +547,31 @@ int iwl_txq_ctx_reset(struct iwl_priv *priv)
         return ret;
 }
 
+void iwl_txq_ctx_reset(struct iwl_priv *priv)
+{
+        int txq_id, slots_num;
+        unsigned long flags;
+
+        spin_lock_irqsave(&priv->lock, flags);
+
+        /* Turn off all Tx DMA fifos */
+        priv->cfg->ops->lib->txq_set_sched(priv, 0);
+
+        /* Tell NIC where to find the "keep warm" buffer */
+        iwl_write_direct32(priv, FH_KW_MEM_ADDR_REG, priv->kw.dma >> 4);
+
+        spin_unlock_irqrestore(&priv->lock, flags);
+
+        /* Alloc and init all Tx queues, including the command queue (#4) */
+        for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) {
+                slots_num = txq_id == IWL_CMD_QUEUE_NUM ?
+                            TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS;
+                iwl_tx_queue_reset(priv, &priv->txq[txq_id], slots_num, txq_id);
+        }
+}
+
 /**
- * iwl_txq_ctx_stop - Stop all Tx DMA channels, free Tx queue memory
+ * iwl_txq_ctx_stop - Stop all Tx DMA channels
  */
 void iwl_txq_ctx_stop(struct iwl_priv *priv)
 {
@@ -524,9 +591,6 @@ void iwl_txq_ctx_stop(struct iwl_priv *priv)
                                     1000);
         }
         spin_unlock_irqrestore(&priv->lock, flags);
-
-        /* Deallocate memory for all Tx queues */
-        iwl_hw_txq_ctx_free(priv);
 }
 EXPORT_SYMBOL(iwl_txq_ctx_stop);
 
@@ -1049,6 +1113,14 @@ int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 
         spin_lock_irqsave(&priv->hcmd_lock, flags);
 
+        /* If this is a huge cmd, mark the huge flag also on the meta.flags
+         * of the _original_ cmd. This is used for DMA mapping clean up.
+         */
+        if (cmd->flags & CMD_SIZE_HUGE) {
+                idx = get_cmd_index(q, q->write_ptr, 0);
+                txq->meta[idx].flags = CMD_SIZE_HUGE;
+        }
+
         idx = get_cmd_index(q, q->write_ptr, cmd->flags & CMD_SIZE_HUGE);
         out_cmd = txq->cmd[idx];
         out_meta = &txq->meta[idx];
@@ -1226,6 +1298,7 @@ void iwl_tx_cmd_complete(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
         bool huge = !!(pkt->hdr.sequence & SEQ_HUGE_FRAME);
         struct iwl_device_cmd *cmd;
         struct iwl_cmd_meta *meta;
+        struct iwl_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
 
         /* If a Tx command is being handled and it isn't in the actual
          * command queue then there a command routing bug has been introduced
@@ -1239,9 +1312,17 @@ void iwl_tx_cmd_complete(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
                 return;
         }
 
-        cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
-        cmd = priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
-        meta = &priv->txq[IWL_CMD_QUEUE_NUM].meta[cmd_index];
+        /* If this is a huge cmd, clear the huge flag on the meta.flags
+         * of the _original_ cmd. So that iwl_cmd_queue_free won't unmap
+         * the DMA buffer for the scan (huge) command.
+         */
+        if (huge) {
+                cmd_index = get_cmd_index(&txq->q, index, 0);
+                txq->meta[cmd_index].flags = 0;
+        }
+        cmd_index = get_cmd_index(&txq->q, index, huge);
+        cmd = txq->cmd[cmd_index];
+        meta = &txq->meta[cmd_index];
 
         pci_unmap_single(priv->pci_dev,
                          pci_unmap_addr(meta, mapping),
@@ -1263,6 +1344,7 @@ void iwl_tx_cmd_complete(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
                                get_cmd_string(cmd->hdr.cmd));
                 wake_up_interruptible(&priv->wait_command_queue);
         }
+        meta->flags = 0;
 }
 EXPORT_SYMBOL(iwl_tx_cmd_complete);
 
diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c
index 54daa38ecba3..b55e4f39a9e1 100644
--- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c
@@ -31,6 +31,7 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/pci.h>
+#include <linux/slab.h>
 #include <linux/dma-mapping.h>
 #include <linux/delay.h>
 #include <linux/sched.h>
@@ -1955,7 +1956,7 @@ static void iwl3945_init_hw_rates(struct iwl_priv *priv,
 {
         int i;
 
-        for (i = 0; i < IWL_RATE_COUNT; i++) {
+        for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
                 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
                 rates[i].hw_value_short = i;
@@ -3921,7 +3922,7 @@ static int iwl3945_setup_mac(struct iwl_priv *priv)
                 BIT(NL80211_IFTYPE_STATION) |
                 BIT(NL80211_IFTYPE_ADHOC);
 
-        hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY |
+        hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
                             WIPHY_FLAG_DISABLE_BEACON_HINTS;
 
         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945;