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x-microsoft-antispam-message-info: HhmYESmQT/X/6bEK0XdTEf57S3UntemP7udHIcR3v+0SsqRc/cxSnLQCe095HYs78CuDxQD8dsRWOtroW0wzPFNX9qQnemJz2AaROEoeGeIze/GjevndRU9yfBjvlcA8lBRUP57+00jKWquXEvNVKGnc9sMJPwuyMQboYC2+wqeoIzk27NdawN6GR+BmKBTjBeGe2HeCES1+E0f5sxmQ8+zTpgXDugFxI7yz4TO5ij0PRHTDLkV6PqD75M0xkJjd+WM+IkakgYbuVr5vBC+ZyJBvZh6HT7wDqg7XI/C+iCwvroAuS1zF5zr7OjRLqtYKOTsN2mivwhS9K7WoXo30Iw== spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: d92c1adf-0683-4607-e778-08d58db3fab8 X-MS-Exchange-CrossTenant-originalarrivaltime: 19 Mar 2018 16:08:27.1433 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB1095 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: From: Marcel Holtmann [ Upstream commit 313f6888c8fbb1bc8b36c9012ce4e1de848df696 ] The Broadcom BCM20702 Bluetooth controller in ThinkPad-T530 devices report support for the Set Event Mask Page 2 command, but actually do return an error when trying to use it. < HCI Command: Read Local Supported Commands (0x04|0x0002) plen 0 > HCI Event: Command Complete (0x0e) plen 68 Read Local Supported Commands (0x04|0x0002) ncmd 1 Status: Success (0x00) Commands: 162 entries ... Set Event Mask Page 2 (Octet 22 - Bit 2) ... < HCI Command: Set Event Mask Page 2 (0x03|0x0063) plen 8 Mask: 0x0000000000000000 > HCI Event: Command Complete (0x0e) plen 4 Set Event Mask Page 2 (0x03|0x0063) ncmd 1 Status: Unknown HCI Command (0x01) Since these controllers do not support any feature that would require the event mask page 2 to be modified, it is safe to not send this command at all. The default value is all bits set to zero. T: Bus=3D01 Lev=3D02 Prnt=3D02 Port=3D03 Cnt=3D03 Dev#=3D 9 Spd=3D12 Mx= Ch=3D 0 D: Ver=3D 2.00 Cls=3Dff(vend.) Sub=3D01 Prot=3D01 MxPS=3D64 #Cfgs=3D 1 P: Vendor=3D0a5c ProdID=3D21e6 Rev=3D 1.12 S: Manufacturer=3DBroadcom Corp S: Product=3DBCM20702A0 S: SerialNumber=3DF82FA8E8CFC0 C:* #Ifs=3D 4 Cfg#=3D 1 Atr=3De0 MxPwr=3D 0mA I:* If#=3D 0 Alt=3D 0 #EPs=3D 3 Cls=3Dff(vend.) Sub=3D01 Prot=3D01 Driver= =3Dbtusb E: Ad=3D81(I) Atr=3D03(Int.) MxPS=3D 16 Ivl=3D1ms E: Ad=3D82(I) Atr=3D02(Bulk) MxPS=3D 64 Ivl=3D0ms E: Ad=3D02(O) Atr=3D02(Bulk) MxPS=3D 64 Ivl=3D0ms I:* If#=3D 1 Alt=3D 0 #EPs=3D 2 Cls=3Dff(vend.) Sub=3D01 Prot=3D01 Driver= =3Dbtusb E: Ad=3D83(I) Atr=3D01(Isoc) MxPS=3D 0 Ivl=3D1ms E: Ad=3D03(O) Atr=3D01(Isoc) MxPS=3D 0 Ivl=3D1ms I: If#=3D 1 Alt=3D 1 #EPs=3D 2 Cls=3Dff(vend.) Sub=3D01 Prot=3D01 Driver= =3Dbtusb E: Ad=3D83(I) Atr=3D01(Isoc) MxPS=3D 9 Ivl=3D1ms E: Ad=3D03(O) Atr=3D01(Isoc) MxPS=3D 9 Ivl=3D1ms I: If#=3D 1 Alt=3D 2 #EPs=3D 2 Cls=3Dff(vend.) Sub=3D01 Prot=3D01 Driver= =3Dbtusb E: Ad=3D83(I) Atr=3D01(Isoc) MxPS=3D 17 Ivl=3D1ms E: Ad=3D03(O) Atr=3D01(Isoc) MxPS=3D 17 Ivl=3D1ms I: If#=3D 1 Alt=3D 3 #EPs=3D 2 Cls=3Dff(vend.) Sub=3D01 Prot=3D01 Driver= =3Dbtusb E: Ad=3D83(I) Atr=3D01(Isoc) MxPS=3D 25 Ivl=3D1ms E: Ad=3D03(O) Atr=3D01(Isoc) MxPS=3D 25 Ivl=3D1ms I: If#=3D 1 Alt=3D 4 #EPs=3D 2 Cls=3Dff(vend.) Sub=3D01 Prot=3D01 Driver= =3Dbtusb E: Ad=3D83(I) Atr=3D01(Isoc) MxPS=3D 33 Ivl=3D1ms E: Ad=3D03(O) Atr=3D01(Isoc) MxPS=3D 33 Ivl=3D1ms I: If#=3D 1 Alt=3D 5 #EPs=3D 2 Cls=3Dff(vend.) Sub=3D01 Prot=3D01 Driver= =3Dbtusb E: Ad=3D83(I) Atr=3D01(Isoc) MxPS=3D 49 Ivl=3D1ms E: Ad=3D03(O) Atr=3D01(Isoc) MxPS=3D 49 Ivl=3D1ms I:* If#=3D 2 Alt=3D 0 #EPs=3D 2 Cls=3Dff(vend.) Sub=3Dff Prot=3Dff Driver= =3Dbtusb E: Ad=3D84(I) Atr=3D02(Bulk) MxPS=3D 32 Ivl=3D0ms E: Ad=3D04(O) Atr=3D02(Bulk) MxPS=3D 32 Ivl=3D0ms I:* If#=3D 3 Alt=3D 0 #EPs=3D 0 Cls=3Dfe(app. ) Sub=3D01 Prot=3D01 Driver= =3D(none) Signed-off-by: Marcel Holtmann Reported-by: Sedat Dilek Tested-by: Sedat Dilek Signed-off-by: Szymon Janc Signed-off-by: Sasha Levin --- net/bluetooth/hci_core.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 62edbf1b114e..5d0b1358c754 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -716,6 +716,7 @@ static void hci_set_event_mask_page_2(struct hci_reques= t *req) { struct hci_dev *hdev =3D req->hdev; u8 events[8] =3D { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; + bool changed =3D false; =20 /* If Connectionless Slave Broadcast master role is supported * enable all necessary events for it. @@ -725,6 +726,7 @@ static void hci_set_event_mask_page_2(struct hci_reques= t *req) events[1] |=3D 0x80; /* Synchronization Train Complete */ events[2] |=3D 0x10; /* Slave Page Response Timeout */ events[2] |=3D 0x20; /* CSB Channel Map Change */ + changed =3D true; } =20 /* If Connectionless Slave Broadcast slave role is supported @@ -735,13 +737,24 @@ static void hci_set_event_mask_page_2(struct hci_requ= est *req) events[2] |=3D 0x02; /* CSB Receive */ events[2] |=3D 0x04; /* CSB Timeout */ events[2] |=3D 0x08; /* Truncated Page Complete */ + changed =3D true; } =20 /* Enable Authenticated Payload Timeout Expired event if supported */ - if (lmp_ping_capable(hdev) || hdev->le_features[0] & HCI_LE_PING) + if (lmp_ping_capable(hdev) || hdev->le_features[0] & HCI_LE_PING) { events[2] |=3D 0x80; + changed =3D true; + } =20 - hci_req_add(req, HCI_OP_SET_EVENT_MASK_PAGE_2, sizeof(events), events); + /* Some Broadcom based controllers indicate support for Set Event + * Mask Page 2 command, but then actually do not support it. Since + * the default value is all bits set to zero, the command is only + * required if the event mask has to be changed. In case no change + * to the event mask is needed, skip this command. + */ + if (changed) + hci_req_add(req, HCI_OP_SET_EVENT_MASK_PAGE_2, + sizeof(events), events); } =20 static void hci_init3_req(struct hci_request *req, unsigned long opt) --=20 2.14.1