From 33fc4b0ad87722ce5ab459ac1db1453864694228 Mon Sep 17 00:00:00 2001
From: "lei.chen" <lei.chen@amlogic.com>
Date: Tue, 15 Aug 2023 11:15:35 +0800
Subject: [PATCH] BT: fix kernel 5.15 issue for RDK linux system [1/1]

PD#SWPL-128975 SWPL-118242

Problem:
1.rdk kernel 5.15 bt not support deep sleep wake-up
2.rdk kernel 5.15 need user confirm

Solution:
support it

Verify:
T5W T3X

Change-Id: Id900189d0a1b66b4c42cf0ca2eb6a9e479b9440c
Signed-off-by: lei.chen <lei.chen@amlogic.com>
---
 net/bluetooth/hci_request.c | 4 ++++
 net/bluetooth/smp.c         | 8 ++++++++
 2 files changed, 12 insertions(+)

diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index c2db60ad0f1d..4f022f53d0e0 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -1303,7 +1303,9 @@ static void hci_req_add_set_adv_filter_enable(struct hci_request *req,
 void hci_req_prepare_suspend(struct hci_dev *hdev, enum suspended_state next)
 {
 	int old_state;
+#ifndef CONFIG_AMLOGIC_LINUX_BT_SUPPORT_WAKEUP
 	struct hci_conn *conn;
+#endif
 	struct hci_request req;
 	u8 page_scan;
 	int disconnect_counter;
@@ -1372,10 +1374,12 @@ void hci_req_prepare_suspend(struct hci_dev *hdev, enum suspended_state next)
 
 		disconnect_counter = 0;
 		/* Soft disconnect everything (power off) */
+#ifndef CONFIG_AMLOGIC_LINUX_BT_SUPPORT_WAKEUP
 		list_for_each_entry(conn, &hdev->conn_hash.list, list) {
 			hci_disconnect(conn, HCI_ERROR_REMOTE_POWER_OFF);
 			disconnect_counter++;
 		}
+#endif
 
 		if (disconnect_counter > 0) {
 			bt_dev_dbg(hdev,
diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
index f688f941c40c..8db1b5944918 100644
--- a/net/bluetooth/smp.c
+++ b/net/bluetooth/smp.c
@@ -883,6 +883,13 @@ static int tk_request(struct l2cap_conn *conn, u8 remote_oob, u8 auth,
 	    hcon->io_capability == HCI_IO_NO_INPUT_OUTPUT)
 		smp->method = JUST_WORKS;
 
+#if IS_ENABLED(CONFIG_AMLOGIC_LINUX_BT_SMP)
+	/* If Just Works, Continue with Zero TK */
+	if (smp->method == JUST_WORKS) {
+		set_bit(SMP_FLAG_TK_VALID, &smp->flags);
+		return 0;
+	}
+#else
 	/* If Just Works, Continue with Zero TK and ask user-space for
 	 * confirmation */
 	if (smp->method == JUST_WORKS) {
@@ -895,6 +902,7 @@ static int tk_request(struct l2cap_conn *conn, u8 remote_oob, u8 auth,
 		set_bit(SMP_FLAG_WAIT_USER, &smp->flags);
 		return 0;
 	}
+#endif
 
 	/* If this function is used for SC -> legacy fallback we
 	 * can only recover the just-works case.