iwlwifi: add valid tx antenna information in rate_scale_table debugfs

when display rate_scale_table debugfs information, also display valid tx
antenna information, this will help user to select correct antenna when
issue fixed rate debugfs command

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Acked-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
index 99da40678878..039ad5769d36 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
@@ -2526,7 +2526,9 @@ static ssize_t rs_sta_dbgfs_scale_table_read(struct file *file,
         ssize_t ret;
 
         struct iwl_lq_sta *lq_sta = file->private_data;
+        struct iwl_priv *priv;
 
+        priv = lq_sta->drv;
         buff = kmalloc(1024, GFP_KERNEL);
         if (!buff)
                 return -ENOMEM;
@@ -2537,6 +2539,10 @@ static ssize_t rs_sta_dbgfs_scale_table_read(struct file *file,
                         lq_sta->active_legacy_rate);
         desc += sprintf(buff+desc, "fixed rate 0x%X\n",
                         lq_sta->dbg_fixed_rate);
+        desc += sprintf(buff+desc, "valid_tx_ant %s%s%s\n",
+            (priv->hw_params.valid_tx_ant & ANT_A) ? "ANT_A," : "",
+            (priv->hw_params.valid_tx_ant & ANT_B) ? "ANT_B," : "",
+            (priv->hw_params.valid_tx_ant & ANT_C) ? "ANT_C" : "");
         desc += sprintf(buff+desc, "general:"
                 "flags=0x%X mimo-d=%d s-ant0x%x d-ant=0x%x\n",
                 lq_sta->lq.general_params.flags,