[PATCH v2] Bluetooth: Only keep controller up after init if powered on
From: Marcel Holtmann <marcel@holtmann.org>
Date: 2012-02-21 11:14:25
Subsystem:
bluetooth subsystem, the rest · Maintainers:
Marcel Holtmann, Luiz Augusto von Dentz, Linus Torvalds
When a new controller gets added to the system, it needs to be brought up briefly to read basic information like features, BD_ADDR etc. and after a timeout it will be brought back down. The only command that should overwrite this timeout is the set power command from the management interface. Just reading the controller list or information is not a good reason to keep the controller up. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> --- net/bluetooth/mgmt.c | 23 ++++++++++++++--------- 1 files changed, 14 insertions(+), 9 deletions(-)
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index a5a2a68..c25cb64 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c@@ -339,9 +339,6 @@ static int read_index_list(struct sock *sk) i = 0; list_for_each_entry(d, &hci_dev_list, list) { - if (test_and_clear_bit(HCI_AUTO_OFF, &d->dev_flags)) - cancel_delayed_work(&d->power_off); - if (test_bit(HCI_SETUP, &d->dev_flags)) continue;
@@ -392,11 +389,12 @@ static u32 get_current_settings(struct hci_dev *hdev) { u32 settings = 0; - if (test_bit(HCI_UP, &hdev->flags)) - settings |= MGMT_SETTING_POWERED; - else + if (!test_bit(HCI_UP, &hdev->flags)) return settings; + if (!test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) + settings |= MGMT_SETTING_POWERED; + if (test_bit(HCI_PSCAN, &hdev->flags)) settings |= MGMT_SETTING_CONNECTABLE;
@@ -623,9 +621,6 @@ static int read_controller_info(struct sock *sk, u16 index) return cmd_status(sk, index, MGMT_OP_READ_INFO, MGMT_STATUS_INVALID_PARAMS); - if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) - cancel_delayed_work_sync(&hdev->power_off); - hci_dev_lock(hdev); if (test_and_clear_bit(HCI_PI_MGMT_INIT, &hci_pi(sk)->flags))
@@ -753,6 +748,16 @@ static int set_powered(struct sock *sk, u16 index, void *data, u16 len) hci_dev_lock(hdev); + if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) { + cancel_delayed_work(&hdev->power_off); + + if (cp->val) { + err = send_settings_rsp(sk, MGMT_OP_SET_POWERED, hdev); + mgmt_powered(hdev, 1); + goto failed; + } + } + up = test_bit(HCI_UP, &hdev->flags); if ((cp->val && up) || (!cp->val && !up)) { err = send_settings_rsp(sk, MGMT_OP_SET_POWERED, hdev);
--
1.7.7.6