Return-Path: From: Johan Hedberg To: linux-bluetooth@vger.kernel.org Subject: [PATCH v4 23/26] Bluetooth: Fix updating page scan parameters when not necessary Date: Wed, 13 Mar 2013 11:12:14 -0700 Message-Id: <1363198337-3896-24-git-send-email-johan.hedberg@gmail.com> In-Reply-To: <1363198337-3896-1-git-send-email-johan.hedberg@gmail.com> References: <1363198337-3896-1-git-send-email-johan.hedberg@gmail.com> Sender: linux-bluetooth-owner@vger.kernel.org List-ID: From: Johan Hedberg Now that the current page scan parameters are stored in struct hci_dev we should check against those values before sending new HCI commands to change them. Signed-off-by: Johan Hedberg --- net/bluetooth/mgmt.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index 98f6295..7783b8d 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -1002,6 +1002,7 @@ failed: static void write_fast_connectable(struct hci_request *req, bool enable) { + struct hci_dev *hdev = req->hdev; struct hci_cp_write_page_scan_activity acp; u8 type; @@ -1019,8 +1020,13 @@ static void write_fast_connectable(struct hci_request *req, bool enable) acp.window = __constant_cpu_to_le16(0x0012); - hci_req_add(req, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY, sizeof(acp), &acp); - hci_req_add(req, HCI_OP_WRITE_PAGE_SCAN_TYPE, 1, &type); + if (__cpu_to_le16(hdev->page_scan_interval) != acp.interval || + __cpu_to_le16(hdev->page_scan_window) != acp.window) + hci_req_add(req, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY, + sizeof(acp), &acp); + + if (hdev->page_scan_type != type) + hci_req_add(req, HCI_OP_WRITE_PAGE_SCAN_TYPE, 1, &type); } static void set_connectable_complete(struct hci_dev *hdev, u8 status) -- 1.7.10.4