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Sun, 8 Apr 2018 20:18:45 -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 4.15 081/189] platform/x86: thinkpad_acpi: suppress warning about palm detection Thread-Topic: [PATCH AUTOSEL for 4.15 081/189] platform/x86: thinkpad_acpi: suppress warning about palm detection Thread-Index: AQHTz5gwALRi28Pg1k2JRc0YNC7DiQ== Date: Mon, 9 Apr 2018 00:17:49 +0000 Message-ID: <20180409001637.162453-81-alexander.levin@microsoft.com> References: <20180409001637.162453-1-alexander.levin@microsoft.com> In-Reply-To: <20180409001637.162453-1-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;DM5PR2101MB1128;7:5nApsP8JQKlHRC6t8vE6UnK5TWdiE135BgWkWaLdzgxGH8hnss+4aayDKWSKXUAnQ2Lc+0sjNM+NVdSYkCf+J+j3NfWjLVWEF0l4V1ESQLaSedx6o6YnVF6j290qcfYOscNmJtDEiYtPk4mPPVhobulrnZbXWHUVE9O28+7EFi3PsRoqk4FZ7GYOSrUaLSXWUU7jUF3iFwYptJ6uk2pB65jP0/gLL2whW3MbRAEkrYeY4MqFs3KqWdsGWtX8Yhca;20:wW+yd5ifUY9nx4sEXbZTz8BWG75Z4a/vIIiEKTAWbUrRk1Xxdcn1Zav1w8PdUCbybybapXOORo3hFotTv9/wb1DzOwPNG9BvIil17tNYINBvFtT8bi5QHjBHHQHje+SFMQBr4aEw2/GA3r6YNbo8Kr1mDw0tyedaKcnmF+9O8A4= x-ms-office365-filtering-ht: Tenant X-MS-Office365-Filtering-Correlation-Id: e783f8f4-7599-4307-5e7f-08d59daf7164 x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(5600026)(4604075)(3008032)(4534165)(4627221)(201703031133081)(201702281549075)(2017052603328)(7193020);SRVR:DM5PR2101MB1128; 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x-microsoft-antispam-message-info: gK450bi43+b8NwbdRbWg855TJLDwyWNXItMJd5j2fvs8wlXdAJSuVRLMcpwaSDLVw5Uo4vdIK0YT9y8xYvGtFjG7nQR0kbhflRW/9rifiEP3ZGQmZgsiDtuRkL3ktfe3aBjp8ueV939UcA6yndJPYOJvzv3+fDJWQr+0aCP4l6LQmDGNMxGS0vdkQg8xiEJZWWZjoveTOfzOyQXD5GgWZh/CclFNFjCsbxp5lPl6DZphqHbdDPJtwf42Jh1AINQtWp2xx34gH0cI5rG0ribEW0ecexkLFV2/VmveMH/k7r7mNcpd4S3W2kNojqAQ3GyFa0xv+WCWMf7Wo0WxZkN03+XaG/SKp2+KJDApqlHMQkT5WcVZLvHeMdCeteMGHRaurqklV6GrkOrfotv/Q3jJ/ai+5OEEFcHsgpa7UKwTEJ4= 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: e783f8f4-7599-4307-5e7f-08d59daf7164 X-MS-Exchange-CrossTenant-originalarrivaltime: 09 Apr 2018 00:17:49.1328 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB1128 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 117be48ff4de..128f91af716e 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 */ }; @@ -4079,6 +4083,12 @@ 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