From 5c3d3b4c4f3df584a90301b944580bf4c1974f12 Mon Sep 17 00:00:00 2001 From: Marcel Holtmann Date: Wed, 4 Nov 2015 07:17:23 +0100 Subject: [PATCH] Bluetooth: Make LE only events conditional on supported commands For the LE only controllers, there are events that should not be enabled if the corresponding command is not supported. Signed-off-by: Marcel Holtmann Signed-off-by: Johan Hedberg --- net/bluetooth/hci_core.c | 22 ++++++++++++++++++---- 1 file changed, 18 insertions(+), 4 deletions(-) diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 556c173ccbc6..97734cab2538 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -534,13 +534,27 @@ static void hci_setup_event_mask(struct hci_request *req) } else { /* Use a different default for LE-only devices */ memset(events, 0, sizeof(events)); - events[0] |= 0x10; /* Disconnection Complete */ - events[1] |= 0x08; /* Read Remote Version Information Complete */ events[1] |= 0x20; /* Command Complete */ events[1] |= 0x40; /* Command Status */ events[1] |= 0x80; /* Hardware Error */ - events[2] |= 0x04; /* Number of Completed Packets */ - events[3] |= 0x02; /* Data Buffer Overflow */ + + /* If the controller supports the Disconnect command, enable + * the corresponding event. In addition enable packet flow + * control related events. + */ + if (hdev->commands[0] & 0x20) { + events[0] |= 0x10; /* Disconnection Complete */ + events[2] |= 0x04; /* Number of Completed Packets */ + events[3] |= 0x02; /* Data Buffer Overflow */ + } + + /* If the controller supports the Read Remote Version + * Information command, enable the corresponding event. + */ + if (hdev->commands[2] & 0x80) + events[1] |= 0x08; /* Read Remote Version Information + * Complete + */ if (hdev->le_features[0] & HCI_LE_ENCRYPTION) { events[0] |= 0x80; /* Encryption Change */ -- 2.39.2