Merge branch 'ufs-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

[karo-tx-linux.git] / drivers / net / wireless / intel / iwlwifi / mvm / rs.c

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rs.c b/drivers/net/wireless/intel/iwlwifi/mvm/rs.c
index 7788eefcd2bdd3066c0b40d5f5575e44f2102c0e..aa785cf3cf68399eb724b33d24d9168602f791a1 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/mvm/rs.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rs.c
@@ -2,7 +2,7 @@
  *
  * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved.
  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
- * Copyright(c) 2016 Intel Deutschland GmbH
+ * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of version 2 of the GNU General Public License as
@@ -1083,34 +1083,6 @@ static void rs_get_lower_rate_down_column(struct iwl_lq_sta *lq_sta,
                rs_get_lower_rate_in_column(lq_sta, rate);
 }
 
-/* Check if both rates are identical
- * allow_ant_mismatch enables matching a SISO rate on ANT_A or ANT_B
- * with a rate indicating STBC/BFER and ANT_AB.
- */
-static inline bool rs_rate_equal(struct rs_rate *a,
-                                struct rs_rate *b,
-                                bool allow_ant_mismatch)
-
-{
-       bool ant_match = (a->ant == b->ant) && (a->stbc == b->stbc) &&
-               (a->bfer == b->bfer);
-
-       if (allow_ant_mismatch) {
-               if (a->stbc || a->bfer) {
-                       WARN_ONCE(a->ant != ANT_AB, "stbc %d bfer %d ant %d",
-                                 a->stbc, a->bfer, a->ant);
-                       ant_match |= (b->ant == ANT_A || b->ant == ANT_B);
-               } else if (b->stbc || b->bfer) {
-                       WARN_ONCE(b->ant != ANT_AB, "stbc %d bfer %d ant %d",
-                                 b->stbc, b->bfer, b->ant);
-                       ant_match |= (a->ant == ANT_A || a->ant == ANT_B);
-               }
-       }
-
-       return (a->type == b->type) && (a->bw == b->bw) && (a->sgi == b->sgi) &&
-               (a->ldpc == b->ldpc) && (a->index == b->index) && ant_match;
-}
-
 /* Check if both rates share the same column */
 static inline bool rs_rate_column_match(struct rs_rate *a,
                                        struct rs_rate *b)
@@ -1182,12 +1154,12 @@ void iwl_mvm_rs_tx_status(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
        u32 lq_hwrate;
        struct rs_rate lq_rate, tx_resp_rate;
        struct iwl_scale_tbl_info *curr_tbl, *other_tbl, *tmp_tbl;
-       u8 reduced_txp = (uintptr_t)info->status.status_driver_data[0];
+       u32 tlc_info = (uintptr_t)info->status.status_driver_data[0];
+       u8 reduced_txp = tlc_info & RS_DRV_DATA_TXP_MSK;
+       u8 lq_color = RS_DRV_DATA_LQ_COLOR_GET(tlc_info);
        u32 tx_resp_hwrate = (uintptr_t)info->status.status_driver_data[1];
        struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
        struct iwl_lq_sta *lq_sta = &mvmsta->lq_sta;
-       bool allow_ant_mismatch = fw_has_api(&mvm->fw->ucode_capa,
-                                            IWL_UCODE_TLV_API_LQ_SS_PARAMS);
 
        /* Treat uninitialized rate scaling data same as non-existing. */
        if (!lq_sta) {
@@ -1262,10 +1234,10 @@ void iwl_mvm_rs_tx_status(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
        rs_rate_from_ucode_rate(lq_hwrate, info->band, &lq_rate);
 
        /* Here we actually compare this rate to the latest LQ command */
-       if (!rs_rate_equal(&tx_resp_rate, &lq_rate, allow_ant_mismatch)) {
+       if (lq_color != LQ_FLAG_COLOR_GET(table->flags)) {
                IWL_DEBUG_RATE(mvm,
-                              "initial tx resp rate 0x%x does not match 0x%x\n",
-                              tx_resp_hwrate, lq_hwrate);
+                              "tx resp color 0x%x does not match 0x%x\n",
+                              lq_color, LQ_FLAG_COLOR_GET(table->flags));
 
                /*
                 * Since rates mis-match, the last LQ command may have failed.
@@ -3326,6 +3298,7 @@ static void rs_build_rates_table(struct iwl_mvm *mvm,
        u8 valid_tx_ant = 0;
        struct iwl_lq_cmd *lq_cmd = &lq_sta->lq;
        bool toggle_ant = false;
+       u32 color;
 
        memcpy(&rate, initial_rate, sizeof(rate));
 
@@ -3380,6 +3353,9 @@ static void rs_build_rates_table(struct iwl_mvm *mvm,
                                 num_rates, num_retries, valid_tx_ant,
                                 toggle_ant);
 
+       /* update the color of the LQ command (as a counter at bits 1-3) */
+       color = LQ_FLAGS_COLOR_INC(LQ_FLAG_COLOR_GET(lq_cmd->flags));
+       lq_cmd->flags = LQ_FLAG_COLOR_SET(lq_cmd->flags, color);
 }
 
 struct rs_bfer_active_iter_data {