diff options
| author | Johan Hedberg <johan.hedberg@intel.com> | 2014-02-28 20:26:12 +0200 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2014-02-28 10:28:16 -0800 |
| commit | 317ac8cb3f9fb58b9ec5764b766a449004ab2a62 (patch) | |
| tree | f94c7db069a87514a4b5e16cff1dafbbd5981dd7 | |
| parent | e3098be40bbde0fdd5fcfa6bf28491db421d333a (diff) | |
| download | linux-317ac8cb3f9fb58b9ec5764b766a449004ab2a62.tar.bz2 | |
Bluetooth: Fix trying to disable scanning twice
The discovery process has a timer for disabling scanning, however
scanning might be disabled through other means too like the auto-connect
process. We should therefore ensure that the timer is never active
after sending a HCI command to disable scanning.
There was some existing code in stop_scan_complete trying to avoid the
timer when a connect request interrupts a discovery procedure, but the
other way around was not covered. This patch covers both scenarios by
canceling the timer as soon as we get a successful command complete for
the disabling HCI command.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
| -rw-r--r-- | net/bluetooth/hci_conn.c | 1 | ||||
| -rw-r--r-- | net/bluetooth/hci_event.c | 5 |
2 files changed, 5 insertions, 1 deletions
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c index 7e47e4240c95..5330fcfde93d 100644 --- a/net/bluetooth/hci_conn.c +++ b/net/bluetooth/hci_conn.c @@ -628,7 +628,6 @@ static void stop_scan_complete(struct hci_dev *hdev, u8 status) /* Since we may have prematurely stopped discovery procedure, we should * update discovery state. */ - cancel_delayed_work(&hdev->le_scan_disable); hci_discovery_set_state(hdev, DISCOVERY_STOPPED); hci_req_init(&req, hdev); diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index a1075c713a9d..e3335b03c992 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -1018,6 +1018,11 @@ static void hci_cc_le_set_scan_enable(struct hci_dev *hdev, break; case LE_SCAN_DISABLE: + /* Cancel this timer so that we don't try to disable scanning + * when it's already disabled. + */ + cancel_delayed_work(&hdev->le_scan_disable); + clear_bit(HCI_LE_SCAN, &hdev->dev_flags); break; |