2020-09-28 07:42:23

by Yun-hao Chung

[permalink] [raw]
Subject: [PATCH v6 2/4] 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 <[email protected]>
Reviewed-by: Alain Michaud <[email protected]>
Reviewed-by: Manish Mandlik <[email protected]>
Reviewed-by: Abhishek Pandit-Subedi <[email protected]>
Reviewed-by: Miao-chen Chou <[email protected]>
---

(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 ba3016cc0b573..db44680fbe9c9 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -1281,8 +1281,10 @@ 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);
--
2.28.0.681.g6f77f65b4e-goog