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Mon, 2 May 2022 15:15:03 -0400 Message-ID: <24fdaa0c-5f63-5e81-5f7c-cd439d301f8c@lenovo.com> Date: Mon, 2 May 2022 15:13:56 -0400 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.7.0 Subject: Re: [External] [PATCH 1/2] platform/x86: thinkpad_acpi: Restore X1 Carbon 9th Gen dual fan quirk Content-Language: en-US From: Mark Pearson To: Lyude Paul , , CC: , , "Hans de Goede" , Henrique de Moraes Holschuh , Mark Gross References: <20220429211418.4546-1-lyude@redhat.com> <20220429211418.4546-2-lyude@redhat.com> <2769588a352e9c3b43a4e09afff100d52a9ba524.camel@redhat.com> In-Reply-To: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-Originating-IP: [10.38.104.132] X-ClientProxiedBy: reswpmail01.lenovo.com (10.62.32.20) To reswpmail01.lenovo.com (10.62.32.20) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 2faf0db6-8738-4ba9-7819-08da2c6ff362 X-MS-TrafficTypeDiagnostic: SG2PR03MB4568:EE_ X-Microsoft-Antispam-PRVS: X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: lenovo.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 May 2022 19:14:15.7499 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 2faf0db6-8738-4ba9-7819-08da2c6ff362 X-MS-Exchange-CrossTenant-Id: 5c7d0b28-bdf8-410c-aa93-4df372b16203 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=5c7d0b28-bdf8-410c-aa93-4df372b16203;Ip=[104.232.225.7];Helo=[mail.lenovo.com] X-MS-Exchange-CrossTenant-AuthSource: SG2APC01FT0030.eop-APC01.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SG2PR03MB4568 X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,NICE_REPLY_A,RDNS_NONE,SPF_HELO_NONE, T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 5/2/22 13:44, Mark Pearson wrote: > > > On 5/2/22 13:42, Lyude Paul wrote: >> Some answers/comments down below >> >> On Fri, 2022-04-29 at 21:25 -0400, Mark Pearson wrote: >>> Hi Lyude >>> >>> On 4/29/22 17:14, Lyude Paul wrote: >>>> The new method of probing dual fan support introduced in: >>>> >>>> bf779aaf56ea ("platform/x86: thinkpad_acpi: Add dual fan probe") >>>> >>>> While this commit says this works on the X1 Carbon 9th Gen, it actually >>>> just results in hiding the second fan on my local machine. Additionally, >>>> I'm fairly sure this machine powers on quite often without either of the >>>> two fans spinning. >>>> >>>> So let's fix this by adding back the dual fan quirk for the X1 Carbon 9th >>>> Gen. >>>> >>>> Signed-off-by: Lyude Paul >>>> Fixes: bf779aaf56ea ("platform/x86: thinkpad_acpi: Add dual fan probe") >>>> Cc: Mark Pearson >>>> Cc: Hans de Goede >>>> Cc: Henrique de Moraes Holschuh >>>> Cc: Mark Gross >>>> Cc: ibm-acpi-devel@lists.sourceforge.net >>>> Cc: platform-driver-x86@vger.kernel.org >>>> --- >>>>  drivers/platform/x86/thinkpad_acpi.c | 1 + >>>>  1 file changed, 1 insertion(+) >>>> >>>> diff --git a/drivers/platform/x86/thinkpad_acpi.c >>>> b/drivers/platform/x86/thinkpad_acpi.c >>>> index c568fae56db2..9067fd0a945c 100644 >>>> --- a/drivers/platform/x86/thinkpad_acpi.c >>>> +++ b/drivers/platform/x86/thinkpad_acpi.c >>>> @@ -8699,6 +8699,7 @@ static const struct tpacpi_quirk fan_quirk_table[] >>>> __initconst = { >>>>         TPACPI_Q_LNV3('N', '2', 'E', TPACPI_FAN_2CTL),  /* P1 / X1 Extreme >>>> (1st gen) */ >>>>         TPACPI_Q_LNV3('N', '2', 'O', TPACPI_FAN_2CTL),  /* P1 / X1 Extreme >>>> (2nd gen) */ >>>>         TPACPI_Q_LNV3('N', '3', '0', TPACPI_FAN_2CTL),  /* P15 (1st gen) / >>>> P15v (1st gen) */ >>>> +       TPACPI_Q_LNV3('N', '3', '2', TPACPI_FAN_2CTL),  /* X1 Carbon (9th >>>> gen) */ >>>>         TPACPI_Q_LNV3('N', '3', '7', TPACPI_FAN_2CTL),  /* T15g (2nd gen) >>>> */ >>>>         TPACPI_Q_LNV3('N', '1', 'O', TPACPI_FAN_NOFAN), /* X1 Tablet (2nd >>>> gen) */ >>>>  }; >>> I just double checked this on my X1C9 - and it's working correctly. 2nd >>> fan is detected correctly. >>> >>> I'd rather understand why it's not working on your setup then just >>> re-introduce the quirk. >> >> Of course! I figured as much, it's just easy to start conversations with a >> revert :P >> >>> >>> What happens on your system when the >>>   res = fan2_get_speed(&speed); >>> is called? If that is failing it means your 2nd fan isn't responding and >>> that's not supposed to happen. Could you let me know if you get an error >>> code, if it happens every boot, etc >>> I assume when the function is called later it works successfully? >> >> It definitely seems to happen every boot, not sure about the error code it >> returns. I will check and get you this info asap >> >>> >>> Also please confirm which BIOS and EC version you have. >> >> BIOS version N32ET75W (1.51) release date 12/02/2021, embedded controller is >> 0.1.32 >> >> > Thanks! > > Along with Thomas' notes I think I've found the problem (though still > bemused why I don't see the problem on my X1C9 and I tested on multiple > platforms previously...so it is somewhat weird). > > Working on a fix - will try and have that out for review later today or > tomorrow. > Not sure exactly what the etiquette here is for the mailing list but I just posted an updated patch "platform/x86: thinkpad_acpi: Correct dual fan probe" that I think addresses all the issues raised in this patch sequence. Please let me know any feedback or concerns. And thanks for raising this! Mark