On Tue, May 23, 2023 at 02:46:46PM -0700, Guenter Roeck wrote:
> On Tue, May 23, 2023 at 03:49:32PM -0500, Baskaran Kannan wrote:
> > Currently, the tctl and die temperatures are rounded off to zero
> > if they are less than 0. There are industrial processors which work
> > below zero.
>
> This was introduced with commit aef17ca12719 ("hwmon: (k10temp) Only apply
> temperature offset if result is positive"). This patch would effecively
> revert that change. Given the reason for introducing it I am not convinced
> that it is a good idea to unconditionally revert it.
>
Any comments ? I am not inclined to accept this patch as-is. What are
the industrial processors ? Is there a means to detect them ?
Guenter
> Guenter
>
> >
> > To display the correct temperature remove the rounding off.
> >
> > Signed-off-by: Baskaran Kannan <Baski.Kannan@xxxxxxx>
> > ---
> > drivers/hwmon/k10temp.c | 4 ----
> > 1 file changed, 4 deletions(-)
> >
> > diff --git a/drivers/hwmon/k10temp.c b/drivers/hwmon/k10temp.c
> > index 7b177b9fbb09..489ad0b1bc74 100644
> > --- a/drivers/hwmon/k10temp.c
> > +++ b/drivers/hwmon/k10temp.c
> > @@ -204,13 +204,9 @@ static int k10temp_read_temp(struct device *dev, u32 attr, int channel,
> > switch (channel) {
> > case 0: /* Tctl */
> > *val = get_raw_temp(data);
> > - if (*val < 0)
> > - *val = 0;
> > break;
> > case 1: /* Tdie */
> > *val = get_raw_temp(data) - data->temp_offset;
> > - if (*val < 0)
> > - *val = 0;
> > break;
> > case 2 ... 13: /* Tccd{1-12} */
> > amd_smn_read(amd_pci_dev_to_node_id(data->pdev),
> > --
> > 2.25.1
> >
