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| author | Sanman Pradhan <psanman@juniper.net> | 2026-03-23 00:24:25 +0000 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2026-03-24 07:55:34 -0700 |
| commit | 0adc752b4f7d82af7bd14f7cad3091b3b5d702ba (patch) | |
| tree | 25fe996b47beb0c68964ec591c9e2e019d2a044b /Documentation | |
| parent | 3075a3951f7708da5a8ab47b0b7d068a32f69e58 (diff) | |
| download | linux-0adc752b4f7d82af7bd14f7cad3091b3b5d702ba.tar.gz linux-0adc752b4f7d82af7bd14f7cad3091b3b5d702ba.zip | |
hwmon: (peci/cputemp) Fix crit_hyst returning delta instead of absolute temperature
The hwmon sysfs ABI expects tempN_crit_hyst to report the temperature at
which the critical condition clears, not the hysteresis delta from the
critical limit.
The peci cputemp driver currently returns tjmax - tcontrol for
crit_hyst_type, which is the hysteresis margin rather than the
corresponding absolute temperature.
Return tcontrol directly, and update the documentation accordingly.
Fixes: bf3608f338e9 ("hwmon: peci: Add cputemp driver")
Cc: stable@vger.kernel.org
Signed-off-by: Sanman Pradhan <psanman@juniper.net>
Link: https://lore.kernel.org/r/20260323002352.93417-2-sanman.pradhan@hpe.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/hwmon/peci-cputemp.rst | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/Documentation/hwmon/peci-cputemp.rst b/Documentation/hwmon/peci-cputemp.rst index fe0422248dc5e..266b62a46f49c 100644 --- a/Documentation/hwmon/peci-cputemp.rst +++ b/Documentation/hwmon/peci-cputemp.rst @@ -51,8 +51,9 @@ temp1_max Provides thermal control temperature of the CPU package temp1_crit Provides shutdown temperature of the CPU package which is also known as the maximum processor junction temperature, Tjmax or Tprochot. -temp1_crit_hyst Provides the hysteresis value from Tcontrol to Tjmax of - the CPU package. +temp1_crit_hyst Provides the hysteresis temperature of the CPU + package. Returns Tcontrol, the temperature at which + the critical condition clears. temp2_label "DTS" temp2_input Provides current temperature of the CPU package scaled @@ -62,8 +63,9 @@ temp2_max Provides thermal control temperature of the CPU package temp2_crit Provides shutdown temperature of the CPU package which is also known as the maximum processor junction temperature, Tjmax or Tprochot. -temp2_crit_hyst Provides the hysteresis value from Tcontrol to Tjmax of - the CPU package. +temp2_crit_hyst Provides the hysteresis temperature of the CPU + package. Returns Tcontrol, the temperature at which + the critical condition clears. temp3_label "Tcontrol" temp3_input Provides current Tcontrol temperature of the CPU |