[PATCH] Bluetooth: Add timer to force power off
From: <hidden>
Date: 2014-02-28 07:33:44
Subsystem:
bluetooth subsystem, the rest · Maintainers:
Marcel Holtmann, Luiz Augusto von Dentz, Linus Torvalds
From: Johan Hedberg <redacted> If some of the cleanup commands caused by mgmt_set_powered(off) never complete we should still force the adapter to be powered down. This is rather easy to do since hdev->power_off is already a delayed work struct. This patch schedules this delayed work if at least one HCI command was sent by the cleanup procedure. Signed-off-by: Johan Hedberg <redacted> --- include/net/bluetooth/hci.h | 1 + net/bluetooth/mgmt.c | 16 +++++++++++++--- 2 files changed, 14 insertions(+), 3 deletions(-)
diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index c3834d3aecbb..8d1bf8c4689c 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h@@ -182,6 +182,7 @@ enum { #define HCI_CMD_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */ #define HCI_ACL_TX_TIMEOUT msecs_to_jiffies(45000) /* 45 seconds */ #define HCI_AUTO_OFF_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */ +#define HCI_POWER_OFF_TIMEOUT msecs_to_jiffies(5000) /* 5 seconds */ /* HCI data types */ #define HCI_COMMAND_PKT 0x01
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 73b6ff817796..e7c87231b9ea 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c@@ -1031,8 +1031,10 @@ static void clean_up_hci_complete(struct hci_dev *hdev, u8 status) { BT_DBG("%s status 0x%02x", hdev->name, status); - if (hci_conn_count(hdev) == 0) + if (hci_conn_count(hdev) == 0) { + cancel_delayed_work(&hdev->power_off); queue_work(hdev->req_workqueue, &hdev->power_off.work); + } } static int clean_up_hci_state(struct hci_dev *hdev)
@@ -1139,9 +1141,13 @@ static int set_powered(struct sock *sk, struct hci_dev *hdev, void *data, } else { /* Disconnect connections, stop scans, etc */ err = clean_up_hci_state(hdev); + if (!err) + queue_delayed_work(hdev->req_workqueue, &hdev->power_off, + HCI_POWER_OFF_TIMEOUT); /* ENODATA means there were no HCI commands queued */ if (err == -ENODATA) { + cancel_delayed_work(&hdev->power_off); queue_work(hdev->req_workqueue, &hdev->power_off.work); err = 0; }
@@ -5147,8 +5153,10 @@ void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, /* The connection is still in hci_conn_hash so test for 1 * instead of 0 to know if this is the last one. */ - if (!cp->val && hci_conn_count(hdev) == 1) + if (!cp->val && hci_conn_count(hdev) == 1) { + cancel_delayed_work(&hdev->power_off); queue_work(hdev->req_workqueue, &hdev->power_off.work); + } } if (!mgmt_connected)
@@ -5217,8 +5225,10 @@ void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, /* The connection is still in hci_conn_hash so test for 1 * instead of 0 to know if this is the last one. */ - if (!cp->val && hci_conn_count(hdev) == 1) + if (!cp->val && hci_conn_count(hdev) == 1) { + cancel_delayed_work(&hdev->power_off); queue_work(hdev->req_workqueue, &hdev->power_off.work); + } } bacpy(&ev.addr.bdaddr, bdaddr);
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1.8.5.3