Bluetooth: Hold wakelock until BT idle timer kicks in.
Holding a wakelock avoids suspend power collapse, which
allow the BT idle timer to kick in, which eventually
initiates BT low power modes.
CRs-Fixed: 361067
Change-Id: I93e3950b6f854e70dbce092a5529120ec008c2b8
Signed-off-by: Rahul Kashyap <rkashyap@codeaurora.org>
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 25b559b1..02ea082 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -448,6 +448,7 @@
conn->power_save = 1;
conn->disc_timeout = HCI_DISCONN_TIMEOUT;
+ wake_lock_init(&conn->idle_lock, WAKE_LOCK_SUSPEND, "bt_idle");
switch (type) {
case ACL_LINK:
@@ -521,6 +522,7 @@
/* Make sure no timers are running */
del_timer(&conn->idle_timer);
+ wake_lock_destroy(&conn->idle_lock);
del_timer(&conn->disc_timer);
del_timer(&conn->smp_timer);
__cancel_delayed_work(&conn->rssi_update_work);
@@ -962,9 +964,11 @@
}
timer:
- if (hdev->idle_timeout > 0)
+ if (hdev->idle_timeout > 0) {
mod_timer(&conn->idle_timer,
jiffies + msecs_to_jiffies(hdev->idle_timeout));
+ wake_lock(&conn->idle_lock);
+ }
}
static inline void hci_conn_stop_rssi_timer(struct hci_conn *conn)