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

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Date: Sat, 29 Jun 2024 00:47:55 +0200
From: Pali Rohár <pali@...nel.org>
To: Armin Wolf <W_Armin@....de>
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

On Saturday 29 June 2024 00:43:08 Armin Wolf wrote:
> 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.

Ok, if there is no negative impact then fine for me.

Acked-by: Pali Rohár <pali@...nel.org>

> 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
> > >