rtlwifi: btcoex: Remove global variables from btcoex

Remove global variables, so btcoexist can support multiple instances
simultaneously.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtcoutsrc.c

@@ -25,14 +25,6 @@
 
 #include "halbt_precomp.h"
 
-/***********************************************
- *		Global variables
- ***********************************************/
-
-struct btc_coexist gl_bt_coexist;
-
-u32 btc_dbg_type[BTC_MSG_MAX];
-
 /***************************************************
  *		Debug related function
  ***************************************************/
@@ -970,9 +962,12 @@ bool halbtc_under_ips(struct btc_coexist *btcoexist)
 /*****************************************************************
  *         Extern functions called by other module
  *****************************************************************/
-bool exhalbtc_initlize_variables(void)
+bool exhalbtc_initlize_variables(struct rtl_priv *rtlpriv)
 {
-	struct btc_coexist *btcoexist = &gl_bt_coexist;
+	struct btc_coexist *btcoexist = rtl_btc_coexist(rtlpriv);
+
+	if (!btcoexist)
+		return false;
 
 	halbtc_dbg_init();
 
@@ -1008,9 +1003,12 @@ bool exhalbtc_initlize_variables(void)
 
 bool exhalbtc_bind_bt_coex_withadapter(void *adapter)
 {
-	struct btc_coexist *btcoexist = &gl_bt_coexist;
 	struct rtl_priv *rtlpriv = adapter;
-	u8 ant_num = 2, chip_type;
+	struct btc_coexist *btcoexist = rtl_btc_coexist(rtlpriv);
+	u8 ant_num = 2, chip_type, single_ant_path = 0;
+
+	if (!btcoexist)
+		return false;
 
 	if (btcoexist->binded)
 		return false;
@@ -1041,10 +1039,16 @@ bool exhalbtc_bind_bt_coex_withadapter(void *adapter)
 	btcoexist->bt_info.miracast_plus_bt = false;
 
 	chip_type = rtl_get_hwpg_bt_type(rtlpriv);
-	exhalbtc_set_chip_type(chip_type);
+	exhalbtc_set_chip_type(btcoexist, chip_type);
 	ant_num = rtl_get_hwpg_ant_num(rtlpriv);
 	exhalbtc_set_ant_num(rtlpriv, BT_COEX_ANT_TYPE_PG, ant_num);
 
+	/* set default antenna position to main  port */
+	btcoexist->board_info.btdm_ant_pos = BTC_ANTENNA_AT_MAIN_PORT;
+
+	single_ant_path = rtl_get_hwpg_single_ant_path(rtlpriv);
+	exhalbtc_set_single_ant_path(btcoexist, single_ant_path);
+
 	if (rtl_get_hwpg_package_type(rtlpriv) == 0)
 		btcoexist->board_info.tfbga_package = false;
 	else if (rtl_get_hwpg_package_type(rtlpriv) == 1)
@@ -1549,30 +1553,25 @@ void exhalbtc_stack_update_profile_info(void)
 {
 }
 
-void exhalbtc_update_min_bt_rssi(s8 bt_rssi)
+void exhalbtc_update_min_bt_rssi(struct btc_coexist *btcoexist, s8 bt_rssi)
 {
-	struct btc_coexist *btcoexist = &gl_bt_coexist;
-
 	if (!halbtc_is_bt_coexist_available(btcoexist))
 		return;
 
 	btcoexist->stack_info.min_bt_rssi = bt_rssi;
 }
 
-void exhalbtc_set_hci_version(u16 hci_version)
+void exhalbtc_set_hci_version(struct btc_coexist *btcoexist, u16 hci_version)
 {
-	struct btc_coexist *btcoexist = &gl_bt_coexist;
-
 	if (!halbtc_is_bt_coexist_available(btcoexist))
 		return;
 
 	btcoexist->stack_info.hci_version = hci_version;
 }
 
-void exhalbtc_set_bt_patch_version(u16 bt_hci_version, u16 bt_patch_version)
+void exhalbtc_set_bt_patch_version(struct btc_coexist *btcoexist,
+				   u16 bt_hci_version, u16 bt_patch_version)
 {
-	struct btc_coexist *btcoexist = &gl_bt_coexist;
-
 	if (!halbtc_is_bt_coexist_available(btcoexist))
 		return;
 
@@ -1580,7 +1579,7 @@ void exhalbtc_set_bt_patch_version(u16 bt_hci_version, u16 bt_patch_version)
 	btcoexist->bt_info.bt_hci_ver = bt_hci_version;
 }
 
-void exhalbtc_set_chip_type(u8 chip_type)
+void exhalbtc_set_chip_type(struct btc_coexist *btcoexist, u8 chip_type)
 {
 	switch (chip_type) {
 	default:
@@ -1588,48 +1587,54 @@ void exhalbtc_set_chip_type(u8 chip_type)
 	case BT_ISSC_3WIRE:
 	case BT_ACCEL:
 	case BT_RTL8756:
-		gl_bt_coexist.board_info.bt_chip_type = BTC_CHIP_UNDEF;
+		btcoexist->board_info.bt_chip_type = BTC_CHIP_UNDEF;
 		break;
 	case BT_CSR_BC4:
-		gl_bt_coexist.board_info.bt_chip_type = BTC_CHIP_CSR_BC4;
+		btcoexist->board_info.bt_chip_type = BTC_CHIP_CSR_BC4;
 		break;
 	case BT_CSR_BC8:
-		gl_bt_coexist.board_info.bt_chip_type = BTC_CHIP_CSR_BC8;
+		btcoexist->board_info.bt_chip_type = BTC_CHIP_CSR_BC8;
 		break;
 	case BT_RTL8723A:
-		gl_bt_coexist.board_info.bt_chip_type = BTC_CHIP_RTL8723A;
+		btcoexist->board_info.bt_chip_type = BTC_CHIP_RTL8723A;
 		break;
 	case BT_RTL8821A:
-		gl_bt_coexist.board_info.bt_chip_type = BTC_CHIP_RTL8821;
+		btcoexist->board_info.bt_chip_type = BTC_CHIP_RTL8821;
 		break;
 	case BT_RTL8723B:
-		gl_bt_coexist.board_info.bt_chip_type = BTC_CHIP_RTL8723B;
+		btcoexist->board_info.bt_chip_type = BTC_CHIP_RTL8723B;
 		break;
 	}
 }
 
 void exhalbtc_set_ant_num(struct rtl_priv *rtlpriv, u8 type, u8 ant_num)
 {
+	struct btc_coexist *btcoexist = rtl_btc_coexist(rtlpriv);
+
+	if (!btcoexist)
+		return;
+
 	if (BT_COEX_ANT_TYPE_PG == type) {
-		gl_bt_coexist.board_info.pg_ant_num = ant_num;
-		gl_bt_coexist.board_info.btdm_ant_num = ant_num;
+		btcoexist->board_info.pg_ant_num = ant_num;
+		btcoexist->board_info.btdm_ant_num = ant_num;
 	} else if (BT_COEX_ANT_TYPE_ANTDIV == type) {
-		gl_bt_coexist.board_info.btdm_ant_num = ant_num;
+		btcoexist->board_info.btdm_ant_num = ant_num;
 	} else if (type == BT_COEX_ANT_TYPE_DETECTED) {
-		gl_bt_coexist.board_info.btdm_ant_num = ant_num;
+		btcoexist->board_info.btdm_ant_num = ant_num;
 		if (rtlpriv->cfg->mod_params->ant_sel == 1)
-			gl_bt_coexist.board_info.btdm_ant_pos =
+			btcoexist->board_info.btdm_ant_pos =
 				BTC_ANTENNA_AT_AUX_PORT;
 		else
-			gl_bt_coexist.board_info.btdm_ant_pos =
+			btcoexist->board_info.btdm_ant_pos =
 				BTC_ANTENNA_AT_MAIN_PORT;
 	}
 }
 
 /* Currently used by 8723b only, S0 or S1 */
-void exhalbtc_set_single_ant_path(u8 single_ant_path)
+void exhalbtc_set_single_ant_path(struct btc_coexist *btcoexist,
+				  u8 single_ant_path)
 {
-	gl_bt_coexist.board_info.single_ant_path = single_ant_path;
+	btcoexist->board_info.single_ant_path = single_ant_path;
 }
 
 void exhalbtc_display_bt_coex_info(struct btc_coexist *btcoexist,

drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtcoutsrc.h

@@ -103,8 +103,6 @@ enum btc_msg_type {
 	BTC_MSG_MAX
 };
 
-extern u32 btc_dbg_type[];
-
 /* following is for BTC_MSG_INTERFACE */
 #define		INTF_INIT				BIT0
 #define		INTF_NOTIFY				BIT2
@@ -604,9 +602,10 @@ struct btc_coexist {
 
 bool halbtc_is_wifi_uplink(struct rtl_priv *adapter);
 
-extern struct btc_coexist gl_bt_coexist;
+#define rtl_btc_coexist(rtlpriv)				\
+	((struct btc_coexist *)((rtlpriv)->btcoexist.btc_context))
 
-bool exhalbtc_initlize_variables(void);
+bool exhalbtc_initlize_variables(struct rtl_priv *rtlpriv);
 bool exhalbtc_bind_bt_coex_withadapter(void *adapter);
 void exhalbtc_power_on_setting(struct btc_coexist *btcoexist);
 void exhalbtc_init_hw_config(struct btc_coexist *btcoexist, bool wifi_only);
@@ -628,11 +627,12 @@ void exhalbtc_periodical(struct btc_coexist *btcoexist);
 void exhalbtc_dbg_control(struct btc_coexist *btcoexist, u8 code, u8 len,
 			  u8 *data);
 void exhalbtc_stack_update_profile_info(void);
-void exhalbtc_set_hci_version(u16 hci_version);
-void exhalbtc_set_bt_patch_version(u16 bt_hci_version, u16 bt_patch_version);
-void exhalbtc_update_min_bt_rssi(s8 bt_rssi);
-void exhalbtc_set_bt_exist(bool bt_exist);
-void exhalbtc_set_chip_type(u8 chip_type);
+void exhalbtc_set_hci_version(struct btc_coexist *btcoexist, u16 hci_version);
+void exhalbtc_set_bt_patch_version(struct btc_coexist *btcoexist,
+				   u16 bt_hci_version, u16 bt_patch_version);
+void exhalbtc_update_min_bt_rssi(struct btc_coexist *btcoexist, s8 bt_rssi);
+void exhalbtc_set_bt_exist(struct btc_coexist *btcoexist, bool bt_exist);
+void exhalbtc_set_chip_type(struct btc_coexist *btcoexist, u8 chip_type);
 void exhalbtc_set_ant_num(struct rtl_priv *rtlpriv, u8 type, u8 ant_num);
 void exhalbtc_display_bt_coex_info(struct btc_coexist *btcoexist,
 				   struct seq_file *m);
@@ -640,6 +640,7 @@ void exhalbtc_signal_compensation(struct btc_coexist *btcoexist,
 				  u8 *rssi_wifi, u8 *rssi_bt);
 void exhalbtc_lps_leave(struct btc_coexist *btcoexist);
 void exhalbtc_low_wifi_traffic_notify(struct btc_coexist *btcoexist);
-void exhalbtc_set_single_ant_path(u8 single_ant_path);
+void exhalbtc_set_single_ant_path(struct btc_coexist *btcoexist,
+				  u8 single_ant_path);
 
 #endif

drivers/net/wireless/realtek/rtlwifi/btcoexist/rtl_btc.c

@@ -31,6 +31,7 @@
 
 static struct rtl_btc_ops rtl_btc_operation = {
 	.btc_init_variables = rtl_btc_init_variables,
+	.btc_deinit_variables = rtl_btc_deinit_variables,
 	.btc_init_hal_vars = rtl_btc_init_hal_vars,
 	.btc_power_on_setting = rtl_btc_power_on_setting,
 	.btc_init_hw_config = rtl_btc_init_hw_config,
@@ -58,58 +59,116 @@ static struct rtl_btc_ops rtl_btc_operation = {
 
 void rtl_btc_display_bt_coex_info(struct rtl_priv *rtlpriv, struct seq_file *m)
 {
-	exhalbtc_display_bt_coex_info(&gl_bt_coexist, m);
+	struct btc_coexist *btcoexist = rtl_btc_coexist(rtlpriv);
+
+	if (!btcoexist) {
+		seq_puts(m, "btc_coexist context is NULL!\n");
+		return;
+	}
+
+	exhalbtc_display_bt_coex_info(btcoexist, m);
 }
 
 void rtl_btc_record_pwr_mode(struct rtl_priv *rtlpriv, u8 *buf, u8 len)
 {
+	struct btc_coexist *btcoexist = rtl_btc_coexist(rtlpriv);
 	u8 safe_len;
 
-	safe_len = sizeof(gl_bt_coexist.pwr_mode_val);
+	if (!btcoexist)
+		return;
+
+	safe_len = sizeof(btcoexist->pwr_mode_val);
 
 	if (safe_len > len)
 		safe_len = len;
 
-	memcpy(gl_bt_coexist.pwr_mode_val, buf, safe_len);
+	memcpy(btcoexist->pwr_mode_val, buf, safe_len);
 }
 
 u8 rtl_btc_get_lps_val(struct rtl_priv *rtlpriv)
 {
-	return gl_bt_coexist.bt_info.lps_val;
+	struct btc_coexist *btcoexist = rtl_btc_coexist(rtlpriv);
+
+	if (!btcoexist)
+		return 0;
+
+	return btcoexist->bt_info.lps_val;
 }
 
 u8 rtl_btc_get_rpwm_val(struct rtl_priv *rtlpriv)
 {
-	return gl_bt_coexist.bt_info.rpwm_val;
+	struct btc_coexist *btcoexist = rtl_btc_coexist(rtlpriv);
+
+	if (!btcoexist)
+		return 0;
+
+	return btcoexist->bt_info.rpwm_val;
 }
 
 bool rtl_btc_is_bt_ctrl_lps(struct rtl_priv *rtlpriv)
 {
-	return gl_bt_coexist.bt_info.bt_ctrl_lps;
+	struct btc_coexist *btcoexist = rtl_btc_coexist(rtlpriv);
+
+	if (!btcoexist)
+		return false;
+
+	return btcoexist->bt_info.bt_ctrl_lps;
 }
 
 bool rtl_btc_is_bt_lps_on(struct rtl_priv *rtlpriv)
 {
-	return gl_bt_coexist.bt_info.bt_lps_on;
+	struct btc_coexist *btcoexist = rtl_btc_coexist(rtlpriv);
+
+	if (!btcoexist)
+		return false;
+
+	return btcoexist->bt_info.bt_lps_on;
 }
 
 void rtl_btc_get_ampdu_cfg(struct rtl_priv *rtlpriv, u8 *reject_agg,
 			   u8 *ctrl_agg_size, u8 *agg_size)
 {
+	struct btc_coexist *btcoexist = rtl_btc_coexist(rtlpriv);
+
+	if (!btcoexist) {
+		*reject_agg = false;
+		*ctrl_agg_size = false;
+		return;
+	}
+
 	if (reject_agg)
-		*reject_agg = gl_bt_coexist.bt_info.reject_agg_pkt;
+		*reject_agg = btcoexist->bt_info.reject_agg_pkt;
 	if (ctrl_agg_size)
-		*ctrl_agg_size = gl_bt_coexist.bt_info.bt_ctrl_agg_buf_size;
+		*ctrl_agg_size = btcoexist->bt_info.bt_ctrl_agg_buf_size;
 	if (agg_size)
-		*agg_size = gl_bt_coexist.bt_info.agg_buf_size;
+		*agg_size = btcoexist->bt_info.agg_buf_size;
+}
+
+static void rtl_btc_alloc_variable(struct rtl_priv *rtlpriv, bool wifi_only)
+{
+	rtlpriv->btcoexist.btc_context =
+			kzalloc(sizeof(struct btc_coexist), GFP_KERNEL);
+}
+
+static void rtl_btc_free_variable(struct rtl_priv *rtlpriv)
+{
+	kfree(rtlpriv->btcoexist.btc_context);
+	rtlpriv->btcoexist.btc_context = NULL;
 }
 
 void rtl_btc_init_variables(struct rtl_priv *rtlpriv)
 {
-	exhalbtc_initlize_variables();
+	rtl_btc_alloc_variable(rtlpriv, false);
+
+	exhalbtc_initlize_variables(rtlpriv);
 	exhalbtc_bind_bt_coex_withadapter(rtlpriv);
 }
 
+void rtl_btc_deinit_variables(struct rtl_priv *rtlpriv)
+{
+	rtl_btc_free_variable(rtlpriv);
+}
+
 void rtl_btc_init_hal_vars(struct rtl_priv *rtlpriv)
 {
 	/* move ant_num, bt_type and single_ant_path to
@@ -119,71 +178,123 @@ void rtl_btc_init_hal_vars(struct rtl_priv *rtlpriv)
 
 void rtl_btc_power_on_setting(struct rtl_priv *rtlpriv)
 {
-	exhalbtc_power_on_setting(&gl_bt_coexist);
+	struct btc_coexist *btcoexist = rtl_btc_coexist(rtlpriv);
+
+	if (!btcoexist)
+		return;
+
+	exhalbtc_power_on_setting(btcoexist);
 }
 
 void rtl_btc_init_hw_config(struct rtl_priv *rtlpriv)
 {
+	struct btc_coexist *btcoexist = rtl_btc_coexist(rtlpriv);
+
 	u8 bt_exist;
 
 	bt_exist = rtl_get_hwpg_bt_exist(rtlpriv);
 	RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
 		"%s, bt_exist is %d\n", __func__, bt_exist);
 
-	exhalbtc_init_hw_config(&gl_bt_coexist, !bt_exist);
-	exhalbtc_init_coex_dm(&gl_bt_coexist);
+	if (!btcoexist)
+		return;
+
+	exhalbtc_init_hw_config(btcoexist, !bt_exist);
+	exhalbtc_init_coex_dm(btcoexist);
 }
 
 void rtl_btc_ips_notify(struct rtl_priv *rtlpriv, u8 type)
 {
-	exhalbtc_ips_notify(&gl_bt_coexist, type);
+	struct btc_coexist *btcoexist = rtl_btc_coexist(rtlpriv);
+
+	if (!btcoexist)
+		return;
+
+	exhalbtc_ips_notify(btcoexist, type);
 }
 
 void rtl_btc_lps_notify(struct rtl_priv *rtlpriv, u8 type)
 {
-	exhalbtc_lps_notify(&gl_bt_coexist, type);
+	struct btc_coexist *btcoexist = rtl_btc_coexist(rtlpriv);
+
+	if (!btcoexist)
+		return;
+
+	exhalbtc_lps_notify(btcoexist, type);
 }
 
 void rtl_btc_scan_notify(struct rtl_priv *rtlpriv, u8 scantype)
 {
-	exhalbtc_scan_notify(&gl_bt_coexist, scantype);
+	struct btc_coexist *btcoexist = rtl_btc_coexist(rtlpriv);
+
+	if (!btcoexist)
+		return;
+
+	exhalbtc_scan_notify(btcoexist, scantype);
 }
 
 void rtl_btc_connect_notify(struct rtl_priv *rtlpriv, u8 action)
 {
-	exhalbtc_connect_notify(&gl_bt_coexist, action);
+	struct btc_coexist *btcoexist = rtl_btc_coexist(rtlpriv);
+
+	if (!btcoexist)
+		return;
+
+	exhalbtc_connect_notify(btcoexist, action);
 }
 
 void rtl_btc_mediastatus_notify(struct rtl_priv *rtlpriv,
 				enum rt_media_status mstatus)
 {
-	exhalbtc_mediastatus_notify(&gl_bt_coexist, mstatus);
+	struct btc_coexist *btcoexist = rtl_btc_coexist(rtlpriv);
+
+	if (!btcoexist)
+		return;
+
+	exhalbtc_mediastatus_notify(btcoexist, mstatus);
 }
 
 void rtl_btc_periodical(struct rtl_priv *rtlpriv)
 {
+	struct btc_coexist *btcoexist = rtl_btc_coexist(rtlpriv);
+
+	if (!btcoexist)
+		return;
+
 	/*rtl_bt_dm_monitor();*/
-	exhalbtc_periodical(&gl_bt_coexist);
+	exhalbtc_periodical(btcoexist);
 }
 
-void rtl_btc_halt_notify(void)
+void rtl_btc_halt_notify(struct rtl_priv *rtlpriv)
 {
-	struct btc_coexist *btcoexist = &gl_bt_coexist;
+	struct btc_coexist *btcoexist = rtl_btc_coexist(rtlpriv);
+
+	if (!btcoexist)
+		return;
 
 	exhalbtc_halt_notify(btcoexist);
 }
 
 void rtl_btc_btinfo_notify(struct rtl_priv *rtlpriv, u8 *tmp_buf, u8 length)
 {
-	exhalbtc_bt_info_notify(&gl_bt_coexist, tmp_buf, length);
+	struct btc_coexist *btcoexist = rtl_btc_coexist(rtlpriv);
+
+	if (!btcoexist)
+		return;
+
+	exhalbtc_bt_info_notify(btcoexist, tmp_buf, length);
 }
 
 void rtl_btc_btmpinfo_notify(struct rtl_priv *rtlpriv, u8 *tmp_buf, u8 length)
 {
+	struct btc_coexist *btcoexist = rtl_btc_coexist(rtlpriv);
 	u8 extid, seq, len;
 	u16 bt_real_fw_ver;
 	u8 bt_fw_ver;
 
+	if (!btcoexist)
+		return;
+
 	if ((length < 4) || (!tmp_buf))
 		return;
 
@@ -200,14 +311,19 @@ void rtl_btc_btmpinfo_notify(struct rtl_priv *rtlpriv, u8 *tmp_buf, u8 length)
 		bt_real_fw_ver = tmp_buf[3] | (tmp_buf[4] << 8);
 		bt_fw_ver = tmp_buf[5];
 
-		gl_bt_coexist.bt_info.bt_real_fw_ver = bt_real_fw_ver;
-		gl_bt_coexist.bt_info.bt_fw_ver = bt_fw_ver;
+		btcoexist->bt_info.bt_real_fw_ver = bt_real_fw_ver;
+		btcoexist->bt_info.bt_fw_ver = bt_fw_ver;
 	}
 }
 
 bool rtl_btc_is_limited_dig(struct rtl_priv *rtlpriv)
 {
-	return gl_bt_coexist.bt_info.limited_dig;
+	struct btc_coexist *btcoexist = rtl_btc_coexist(rtlpriv);
+
+	if (!btcoexist)
+		return false;
+
+	return btcoexist->bt_info.limited_dig;
 }
 
 bool rtl_btc_is_disable_edca_turbo(struct rtl_priv *rtlpriv)
@@ -239,8 +355,13 @@ bool rtl_btc_is_disable_edca_turbo(struct rtl_priv *rtlpriv)
 
 bool rtl_btc_is_bt_disabled(struct rtl_priv *rtlpriv)
 {
+	struct btc_coexist *btcoexist = rtl_btc_coexist(rtlpriv);
+
+	if (!btcoexist)
+		return true;
+
 	/* It seems 'bt_disabled' is never be initialized or set. */
-	if (gl_bt_coexist.bt_info.bt_disabled)
+	if (btcoexist->bt_info.bt_disabled)
 		return true;
 	else
 		return false;
@@ -248,7 +369,12 @@ bool rtl_btc_is_bt_disabled(struct rtl_priv *rtlpriv)
 
 void rtl_btc_special_packet_notify(struct rtl_priv *rtlpriv, u8 pkt_type)
 {
-	return exhalbtc_special_packet_notify(&gl_bt_coexist, pkt_type);
+	struct btc_coexist *btcoexist = rtl_btc_coexist(rtlpriv);
+
+	if (!btcoexist)
+		return;
+
+	return exhalbtc_special_packet_notify(btcoexist, pkt_type);
 }
 
 struct rtl_btc_ops *rtl_btc_get_ops_pointer(void)

drivers/net/wireless/realtek/rtlwifi/btcoexist/rtl_btc.h

@@ -28,6 +28,7 @@
 #include "halbt_precomp.h"
 
 void rtl_btc_init_variables(struct rtl_priv *rtlpriv);
+void rtl_btc_deinit_variables(struct rtl_priv *rtlpriv);
 void rtl_btc_init_hal_vars(struct rtl_priv *rtlpriv);
 void rtl_btc_power_on_setting(struct rtl_priv *rtlpriv);
 void rtl_btc_init_hw_config(struct rtl_priv *rtlpriv);
@@ -38,7 +39,7 @@ void rtl_btc_connect_notify(struct rtl_priv *rtlpriv, u8 action);
 void rtl_btc_mediastatus_notify(struct rtl_priv *rtlpriv,
 				enum rt_media_status mstatus);
 void rtl_btc_periodical(struct rtl_priv *rtlpriv);
-void rtl_btc_halt_notify(void);
+void rtl_btc_halt_notify(struct rtl_priv *rtlpriv);
 void rtl_btc_btinfo_notify(struct rtl_priv *rtlpriv, u8 *tmpbuf, u8 length);
 void rtl_btc_btmpinfo_notify(struct rtl_priv *rtlpriv, u8 *tmp_buf, u8 length);
 bool rtl_btc_is_limited_dig(struct rtl_priv *rtlpriv);

drivers/net/wireless/realtek/rtlwifi/pci.c

@@ -1841,7 +1841,10 @@ static void rtl_pci_stop(struct ieee80211_hw *hw)
 	u8 rf_timeout = 0;
 
 	if (rtlpriv->cfg->ops->get_btc_status())
-		rtlpriv->btcoexist.btc_ops->btc_halt_notify();
+		rtlpriv->btcoexist.btc_ops->btc_halt_notify(rtlpriv);
+
+	if (rtlpriv->btcoexist.btc_ops)
+		rtlpriv->btcoexist.btc_ops->btc_deinit_variables(rtlpriv);
 
 	/*should be before disable interrupt&adapter
 	 *and will do it immediately.

drivers/net/wireless/realtek/rtlwifi/wifi.h

@@ -2500,6 +2500,8 @@ struct rtl_btc_info {
 struct bt_coexist_info {
 	struct rtl_btc_ops *btc_ops;
 	struct rtl_btc_info btc_info;
+	/* btc context */
+	void *btc_context;
 	/* EEPROM BT info. */
 	u8 eeprom_bt_coexist;
 	u8 eeprom_bt_type;
@@ -2556,6 +2558,7 @@ struct bt_coexist_info {
 
 struct rtl_btc_ops {
 	void (*btc_init_variables) (struct rtl_priv *rtlpriv);
+	void (*btc_deinit_variables)(struct rtl_priv *rtlpriv);
 	void (*btc_init_hal_vars) (struct rtl_priv *rtlpriv);
 	void (*btc_power_on_setting)(struct rtl_priv *rtlpriv);
 	void (*btc_init_hw_config) (struct rtl_priv *rtlpriv);
@@ -2566,7 +2569,7 @@ struct rtl_btc_ops {
 	void (*btc_mediastatus_notify) (struct rtl_priv *rtlpriv,
 					enum rt_media_status mstatus);
 	void (*btc_periodical) (struct rtl_priv *rtlpriv);
-	void (*btc_halt_notify) (void);
+	void (*btc_halt_notify)(struct rtl_priv *rtlpriv);
 	void (*btc_btinfo_notify) (struct rtl_priv *rtlpriv,
 				   u8 *tmp_buf, u8 length);
 	void (*btc_btmpinfo_notify)(struct rtl_priv *rtlpriv,