linux-kernel - [PATCH v11 2/5] Bluetooth: Handle system suspend resume case

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Date:   Thu, 26 Nov 2020 12:22:22 +0800
From:   Howard Chung <howardchung@...gle.com>
To:     linux-bluetooth@...r.kernel.org, marcel@...tmann.org,
        luiz.dentz@...il.com
Cc:     alainm@...omium.org, mcchou@...omium.org, mmandlik@...omium.org,
        Howard Chung <howardchung@...gle.com>,
        Abhishek Pandit-Subedi <abhishekpandit@...omium.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Johan Hedberg <johan.hedberg@...il.com>,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH v11 2/5] Bluetooth: Handle system suspend resume case

This patch adds code to handle the system suspension during interleave
scan. The interleave scan will be canceled when the system is going to
sleep, and will be restarted after waking up.

Signed-off-by: Howard Chung <howardchung@...gle.com>
Reviewed-by: Alain Michaud <alainm@...omium.org>
Reviewed-by: Manish Mandlik <mmandlik@...omium.org>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@...omium.org>
Reviewed-by: Miao-chen Chou <mcchou@...omium.org>
---

(no changes since v5)

Changes in v5:
- Remove the change in hci_req_config_le_suspend_scan

 net/bluetooth/hci_request.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index d6bf1517ddaec..8addb94560013 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -1294,8 +1294,10 @@ void hci_req_prepare_suspend(struct hci_dev *hdev, enum suspended_state next)
 		hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, 1, &page_scan);
 
 		/* Disable LE passive scan if enabled */
-		if (hci_dev_test_flag(hdev, HCI_LE_SCAN))
+		if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) {
+			cancel_interleave_scan(hdev);
 			hci_req_add_le_scan_disable(&req, false);
+		}
 
 		/* Mark task needing completion */
 		set_bit(SUSPEND_SCAN_DISABLE, hdev->suspend_tasks);
-- 
2.29.2.454.gaff20da3a2-goog