From ab7a1d20a3def1448bdcc128d77ebf50a672e4a5 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Tue, 13 Aug 2024 07:04:46 +0200 Subject: Merging upstream version 6.10.4. Signed-off-by: Daniel Baumann --- net/bluetooth/hci_sync.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'net/bluetooth/hci_sync.c') diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c index bb70408855..2f26147fdf 100644 --- a/net/bluetooth/hci_sync.c +++ b/net/bluetooth/hci_sync.c @@ -2929,6 +2929,27 @@ static int hci_passive_scan_sync(struct hci_dev *hdev) */ filter_policy = hci_update_accept_list_sync(hdev); + /* If suspended and filter_policy set to 0x00 (no acceptlist) then + * passive scanning cannot be started since that would require the host + * to be woken up to process the reports. + */ + if (hdev->suspended && !filter_policy) { + /* Check if accept list is empty then there is no need to scan + * while suspended. + */ + if (list_empty(&hdev->le_accept_list)) + return 0; + + /* If there are devices is the accept_list that means some + * devices could not be programmed which in non-suspended case + * means filter_policy needs to be set to 0x00 so the host needs + * to filter, but since this is treating suspended case we + * can ignore device needing host to filter to allow devices in + * the acceptlist to be able to wakeup the system. + */ + filter_policy = 0x01; + } + /* When the controller is using random resolvable addresses and * with that having LE privacy enabled, then controllers with * Extended Scanner Filter Policies support can now enable support -- cgit v1.2.3