Bluetooth: Send new settings only when pairable changes
In case the current value of pairable is already configured, do not
send a new settings event indicating that something has changed while
in reality everything is the same.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 9702079..3f628fd 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -1188,6 +1188,7 @@
u16 len)
{
struct mgmt_mode *cp = data;
+ bool changed;
int err;
BT_DBG("request for %s", hdev->name);
@@ -1199,17 +1200,18 @@
hci_dev_lock(hdev);
if (cp->val)
- set_bit(HCI_PAIRABLE, &hdev->dev_flags);
+ changed = !test_and_set_bit(HCI_PAIRABLE, &hdev->dev_flags);
else
- clear_bit(HCI_PAIRABLE, &hdev->dev_flags);
+ changed = test_and_clear_bit(HCI_PAIRABLE, &hdev->dev_flags);
err = send_settings_rsp(sk, MGMT_OP_SET_PAIRABLE, hdev);
if (err < 0)
- goto failed;
+ goto unlock;
- err = new_settings(hdev, sk);
+ if (changed)
+ err = new_settings(hdev, sk);
-failed:
+unlock:
hci_dev_unlock(hdev);
return err;
}