linux-kernel - Re: [PATCH] hwmon: (dell-smm) Add Dell OptiPlex 7060 to DMI table

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Message-ID: <b4e555cf-dae3-4af3-98b7-15633eb3cc63@gmx.de>
Date: Sat, 29 Jun 2024 00:43:08 +0200
From: Armin Wolf <W_Armin@....de>
To: Pali Rohár <pali@...nel.org>
Cc: jdelvare@...e.com, linux@...ck-us.net, linux-hwmon@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] hwmon: (dell-smm) Add Dell OptiPlex 7060 to DMI table

Am 28.06.24 um 23:57 schrieb Pali Rohár:

> On Friday 28 June 2024 23:47:23 Armin Wolf wrote:
>> The BIOS on this machine is buggy and will in some cases return
>> an error when trying to get the fan state, but reading of the
>> RPM values and the temperature sensors still works.
> Does this error affects machine usage (e.g. freeze of CPU or some
> erratic fan behavior)? Or just kernel does not receive fan state and is
> unable to report meaningful value to userspace?

Basically, it seems that the BIOS will return an error if the to-be-returned fan state is less than 2.
Everything else seems to work.

Thanks,
Armin Wolf

>> Closes: https://github.com/vitorafsr/i8kutils/issues/38
>> Signed-off-by: Armin Wolf <W_Armin@....de>
>> ---
>>   Documentation/hwmon/dell-smm-hwmon.rst | 2 ++
>>   drivers/hwmon/dell-smm-hwmon.c         | 7 +++++++
>>   2 files changed, 9 insertions(+)
>>
>> diff --git a/Documentation/hwmon/dell-smm-hwmon.rst b/Documentation/hwmon/dell-smm-hwmon.rst
>> index 977263cb57a8..74905675d71f 100644
>> --- a/Documentation/hwmon/dell-smm-hwmon.rst
>> +++ b/Documentation/hwmon/dell-smm-hwmon.rst
>> @@ -360,6 +360,8 @@ Firmware Bug                                            Affected Machines
>>   ======================================================= =================
>>   Reading of fan states return spurious errors.           Precision 490
>>
>> +                                                        OptiPlex 7060
>> +
>>   Reading of fan types causes erratic fan behaviour.      Studio XPS 8000
>>
>>                                                           Studio XPS 8100
>> diff --git a/drivers/hwmon/dell-smm-hwmon.c b/drivers/hwmon/dell-smm-hwmon.c
>> index 48a81c64f00d..c75bfe93f2f6 100644
>> --- a/drivers/hwmon/dell-smm-hwmon.c
>> +++ b/drivers/hwmon/dell-smm-hwmon.c
>> @@ -1263,6 +1263,13 @@ static const struct dmi_system_id i8k_dmi_table[] __initconst = {
>>   			DMI_MATCH(DMI_PRODUCT_NAME, "MP061"),
>>   		},
>>   	},
>> +	{
>> +		.ident = "Dell OptiPlex 7060",
>> +		.matches = {
>> +			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
>> +			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "OptiPlex 7060"),
>> +		},
>> +	},
>>   	{
>>   		.ident = "Dell Precision",
>>   		.matches = {
>> --
>> 2.39.2
>>