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Sun, 8 Apr 2018 20:23:48 -0400 From: Sasha Levin To: "stable@vger.kernel.org" , "linux-kernel@vger.kernel.org" CC: David Herrmann , Matthew Thode , Andy Shevchenko , Sasha Levin Subject: [PATCH AUTOSEL for 4.14 068/161] platform/x86: thinkpad_acpi: suppress warning about palm detection Thread-Topic: [PATCH AUTOSEL for 4.14 068/161] platform/x86: thinkpad_acpi: suppress warning about palm detection Thread-Index: AQHTz5iXDQjGw0x6xkKInlyV7zjZVw== Date: Mon, 9 Apr 2018 00:20:41 +0000 Message-ID: <20180409001936.162706-68-alexander.levin@microsoft.com> References: <20180409001936.162706-1-alexander.levin@microsoft.com> In-Reply-To: <20180409001936.162706-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;DM5PR2101MB1080;7:/iVow9sXxu0xjeC0NLvrn0kOFQS9QH5TxpKuPUh9l7TRZSJydhyx9GN/MhFHICH8lGfLOKy+nPtqwBrXRoK3BfLcl/sdEbgf1v+ZNN18QUy0RIrKqjq9WdylP54EeQHWsCWgN6f6VtKtiEXaZ9pE3eDWB5KPKMlxJGVSPeq7m0IwWR509nwrVs7ZaKRHkip2ei4/FZiJZJKQd4D1r7nlLbaYndGzqJo5Os8FCCgP92N7NDDDhbSYgpWWugM+ImKJ;20:NgOgoIwmf9PtMARyqT2JbegPMHUzt4nRc9durjq7GuY3cbeFLTtpszHBjItN06iYlxWw8KFN2Y7/eG2quao+EyzWOaAlXcuQxItCfjgnpCWApev4xItgG9i//jWXU/1DxlKnBACjzxRVYPPGuQf9qHrpsg9Y1Iuy4l9ZDXhIpks= x-ms-office365-filtering-ht: Tenant X-MS-Office365-Filtering-Correlation-Id: d34bf78b-3cfc-4501-fde4-08d59db0278e x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(5600026)(4604075)(3008032)(4534165)(4627221)(201703031133081)(201702281549075)(2017052603328)(7193020);SRVR:DM5PR2101MB1080; 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x-microsoft-antispam-message-info: wHTwV1k8gvx24tH1DlMEM/WGy94V6Yf5G4kZ4BHBkZKoP90xbi90/jSx9m0nWbz0uuK8mp4DJeJ6Tx7we1MgIpX07POiQdwlJHgYnZ7Lu4CC0bmk/NqDppDF4M85o/8ZiVXpzkvj14j8pyKhDurTAv1zx+9fhyGQj+obsojqG8hJqyTkjfBwWhSY3g6VjlsSqasLBRhEbY0/tcQ3kWQIgAjr8RjL8zMx8GeGzvTzdta6iNBx/6BWPUUddzz8pu6zjck85D5Oq7XVWJLMzi8JqYKRaJNzST5FSlXinaT8j+sz4z0Ei15ESXpwkPb6jPk71yPkiHeyQY0rdJsklMM3U0tjMvpWiJy5lC7S2eUvTpv7Ebmfg0hvOa53e6IYv5wlzbilJEILO3zf9/KYVaB5FWbk+5nBTy9no2Ld7eE3oNc= 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: d34bf78b-3cfc-4501-fde4-08d59db0278e X-MS-Exchange-CrossTenant-originalarrivaltime: 09 Apr 2018 00:20:41.4879 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB1080 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: David Herrmann [ Upstream commit 587d8628fb71c3bfae29fb2bbe84c1478c59bac8 ] This patch prevents the thinkpad_acpi driver from warning about 2 event codes returned for keyboard palm-detection. No behavioral changes, other than suppressing the warning in the kernel log. The events are still forwarded via acpi-netlink channels. We could, optionally, decide to forward the event through a input-switch on the tpacpi input device. However, so far no suitable input-code exists, and no similar drivers report such events. Hence, leave it an acpi event for now. Note that the event-codes are named based on empirical studies. On the ThinkPad X1 5th Gen the sensor can be found underneath the arrow key. Cc: Matthew Thode Signed-off-by: David Herrmann Acked-by: Henrique de Moraes Holschuh Signed-off-by: Andy Shevchenko Signed-off-by: Sasha Levin --- drivers/platform/x86/thinkpad_acpi.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/th= inkpad_acpi.c index 2242d6035d9e..c407d52ef7cf 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -214,6 +214,10 @@ enum tpacpi_hkey_event_t { /* AC-related events */ TP_HKEY_EV_AC_CHANGED =3D 0x6040, /* AC status changed */ =20 + /* Further user-interface events */ + TP_HKEY_EV_PALM_DETECTED =3D 0x60b0, /* palm hoveres keyboard */ + TP_HKEY_EV_PALM_UNDETECTED =3D 0x60b1, /* palm removed */ + /* Misc */ TP_HKEY_EV_RFKILL_CHANGED =3D 0x7000, /* rfkill switch changed */ }; @@ -3973,6 +3977,12 @@ static bool hotkey_notify_6xxx(const u32 hkey, *send_acpi_ev =3D false; break; =20 + case TP_HKEY_EV_PALM_DETECTED: + case TP_HKEY_EV_PALM_UNDETECTED: + /* palm detected hovering the keyboard, forward to user-space + * via netlink for consumption */ + return true; + default: pr_warn("unknown possible thermal alarm or keyboard event received\n"); known =3D false; --=20 2.15.1