From: Wey-Yi Guy <wey-yi.w.guy@xxxxxxxxx>
For debugging purpose, keep track of the bt coex enable/disable state.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@xxxxxxxxx>
---
drivers/net/wireless/iwlwifi/iwl-agn-debugfs.c | 3 +++
drivers/net/wireless/iwlwifi/iwl-agn-lib.c | 1 +
drivers/net/wireless/iwlwifi/iwl-core.c | 1 +
drivers/net/wireless/iwlwifi/iwl-debugfs.c | 7 +++++++
drivers/net/wireless/iwlwifi/iwl-dev.h | 1 +
5 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-debugfs.c b/drivers/net/wireless/iwlwifi/iwl-agn-debugfs.c
index a358d43..a6dbd89 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-debugfs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-debugfs.c
@@ -856,6 +856,9 @@ ssize_t iwl_ucode_bt_stats_read(struct file *file,
if (!iwl_is_alive(priv))
return -EAGAIN;
+ if (!priv->bt_enable_flag)
+ return -EINVAL;
+
/* make request to uCode to retrieve statistics information */
mutex_lock(&priv->mutex);
ret = iwl_send_statistics_request(priv, CMD_SYNC, false);
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
index 7c8010f..4bc82fc 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
@@ -1845,6 +1845,7 @@ void iwlagn_send_advance_bt_config(struct iwl_priv *priv)
bt_cmd.flags |= IWLAGN_BT_FLAG_CHANNEL_INHIBITION;
IWL_DEBUG_INFO(priv, "BT coex flag: 0X%x\n", bt_cmd.flags);
}
+ priv->bt_enable_flag = bt_cmd.flags;
if (priv->bt_full_concurrent)
memcpy(bt_cmd.bt3_lookup_table, iwlagn_concurrent_lookup,
sizeof(iwlagn_concurrent_lookup));
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c
index 06cdc60..efbde1f 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.c
+++ b/drivers/net/wireless/iwlwifi/iwl-core.c
@@ -1223,6 +1223,7 @@ void iwl_send_bt_config(struct iwl_priv *priv)
else
bt_cmd.flags = BT_COEX_ENABLE;
+ priv->bt_enable_flag = bt_cmd.flags;
IWL_DEBUG_INFO(priv, "BT coex %s\n",
(bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
diff --git a/drivers/net/wireless/iwlwifi/iwl-debugfs.c b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
index d368363..6fe80b5 100644
--- a/drivers/net/wireless/iwlwifi/iwl-debugfs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
@@ -1567,6 +1567,13 @@ static ssize_t iwl_dbgfs_bt_traffic_read(struct file *file,
const size_t bufsz = sizeof(buf);
ssize_t ret;
+ if (!priv->bt_enable_flag) {
+ pos += scnprintf(buf + pos, bufsz - pos, "BT coex disabled\n");
+ ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
+ return ret;
+ }
+ pos += scnprintf(buf + pos, bufsz - pos, "BT enable flag: 0x%x\n",
+ priv->bt_enable_flag);
pos += scnprintf(buf + pos, bufsz - pos, "BT in %s mode\n",
priv->bt_full_concurrent ? "full concurrency" : "3-wire");
pos += scnprintf(buf + pos, bufsz - pos, "BT status: %s, "
diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h
index 836f181..8dda678 100644
--- a/drivers/net/wireless/iwlwifi/iwl-dev.h
+++ b/drivers/net/wireless/iwlwifi/iwl-dev.h
@@ -1468,6 +1468,7 @@ struct iwl_priv {
};
/* bt coex */
+ u8 bt_enable_flag;
u8 bt_status;
u8 bt_traffic_load, last_bt_traffic_load;
bool bt_ch_announce;
--
1.7.0.4
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