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Tue, 30 Nov 2021 11:50:06 +0000 Received: from PNZPR01MB4415.INDPRD01.PROD.OUTLOOK.COM ([fe80::7ca6:9165:19ec:4cd7]) by PNZPR01MB4415.INDPRD01.PROD.OUTLOOK.COM ([fe80::7ca6:9165:19ec:4cd7%5]) with mapi id 15.20.4734.024; Tue, 30 Nov 2021 11:50:06 +0000 From: Aditya Garg To: Greg KH CC: Marcel Holtmann , Thorsten Leemhuis , Orlando Chamberlain , Daniel Winkler , Johan Hedberg , "linux-bluetooth@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Luiz Augusto von Dentz , "regressions@lists.linux.dev" , "sonnysasaka@chromium.org" , "stable@vger.kernel.org" Subject: Re: [PATCH v7 1/2] Bluetooth: add quirk disabling LE Read Transmit Power Thread-Topic: [PATCH v7 1/2] Bluetooth: add quirk disabling LE Read Transmit Power Thread-Index: AQHX5d7dHicx4XyL6UmjXwqFY5glRawb8qOAgAACc4A= Date: Tue, 30 Nov 2021 11:50:06 +0000 Message-ID: References: <287DE71A-2BF2-402D-98C8-24A9AEEE55CB@live.com> <42E2EC08-1D09-4DDE-B8B8-7855379C23C5@holtmann.org> <6ABF3770-A9E8-4DAF-A22D-DA7113F444F3@live.com> <92FBACD6-F4F2-4DE8-9000-2D30852770FC@live.com> <3716D644-CD1B-4A5C-BC96-A51FF360E31D@live.com> <9E6473A2-2ABE-4692-8DCF-D8F06BDEAE29@live.com> <64E15BD0-665E-471F-94D9-991DFB87DEA0@live.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-tmn: [6244ijVRyFmR575fepgmURv9qn60FtfkmeElb7DWD4DQlYLsmiBqoSOapCXlnmdm] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: c7a8623e-37bb-4af2-6fea-08d9b3f78db3 x-ms-traffictypediagnostic: PN1PR0101MB1903: x-microsoft-antispam: BCL:0; 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charset="us-ascii" Content-ID: <9109C2326066D14A92E1412E16E163FD@INDPRD01.PROD.OUTLOOK.COM> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: sct-15-20-3174-20-msonline-outlook-a1a1a.templateTenant X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: PNZPR01MB4415.INDPRD01.PROD.OUTLOOK.COM X-MS-Exchange-CrossTenant-RMS-PersistedConsumerOrg: 00000000-0000-0000-0000-000000000000 X-MS-Exchange-CrossTenant-Network-Message-Id: c7a8623e-37bb-4af2-6fea-08d9b3f78db3 X-MS-Exchange-CrossTenant-originalarrivaltime: 30 Nov 2021 11:50:06.4141 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 84df9e7f-e9f6-40af-b435-aaaaaaaaaaaa X-MS-Exchange-CrossTenant-rms-persistedconsumerorg: 00000000-0000-0000-0000-000000000000 X-MS-Exchange-Transport-CrossTenantHeadersStamped: PN1PR0101MB1903 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > On 30-Nov-2021, at 5:11 PM, Greg KH wrote: >=20 > On Tue, Nov 30, 2021 at 11:38:58AM +0000, Aditya Garg wrote: >> From: Aditya Garg >>=20 >> Some devices have a bug causing them to not work if they query=20 >> LE tx power on startup. Thus we add a quirk in order to not query it=20 >> and default min/max tx power values to HCI_TX_POWER_INVALID. >>=20 >> Signed-off-by: Aditya Garg >> Reported-by: Orlando Chamberlain >> Tested-by: Orlando Chamberlain >> Link: >> https://lore.kernel.org/r/4970a940-211b-25d6-edab-21a815313954@protonmai= l.com >> Fixes: 7c395ea521e6 ("Bluetooth: Query LE tx power on startup") >> --- >> v7 :- Added Tested-by. >> include/net/bluetooth/hci.h | 9 +++++++++ >> net/bluetooth/hci_core.c | 3 ++- >> 2 files changed, 11 insertions(+), 1 deletion(-) >>=20 >> diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h >> index 63065bc01b766c..383342efcdc464 100644 >> --- a/include/net/bluetooth/hci.h >> +++ b/include/net/bluetooth/hci.h >> @@ -246,6 +246,15 @@ enum { >> * HCI after resume. >> */ >> HCI_QUIRK_NO_SUSPEND_NOTIFIER, >> + >> + /* >> + * When this quirk is set, LE tx power is not queried on startup >> + * and the min/max tx power values default to HCI_TX_POWER_INVALID. >> + * >> + * This quirk can be set before hci_register_dev is called or >> + * during the hdev->setup vendor callback. >> + */ >> + HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER, >> }; >>=20 >> /* HCI device flags */ >> diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c >> index 8d33aa64846b1c..434c6878fe9640 100644 >> --- a/net/bluetooth/hci_core.c >> +++ b/net/bluetooth/hci_core.c >> @@ -619,7 +619,8 @@ static int hci_init3_req(struct hci_request *req, un= signed long opt) >> hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL); >> } >>=20 >> - if (hdev->commands[38] & 0x80) { >> + if ((hdev->commands[38] & 0x80) && >> + !test_bit(HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER, &hdev->quirks)) { >=20 > This line is still not properly formatted. I hope its fine in the resent patch. I sent the patch as HTML by mistake. >=20 > Please always use scripts/checkpatch.pl to find issues like this. >=20 > thanks, >=20 > greg k-h