DDR5 temperature sensor (spd5118) fails after resuming from S3 (NovaCustom NV54 laptop)

[lfinbob]

Qubes OS release

Qubes OS 4.2

Brief summary

Device: NV54 Laptop from NovaCustom
Firmware: coreboot: 0.9.0 07/17/2024 (the latest for this laptop)
kernel: 6.12.5-2.qubes.fc37.x86_64

Error in kernel log:

[   18.573184] spd5118 16-0050: DDR5 temperature sensor: vendor 0x0e:0x8f revision 1.2
[   18.583174] spd5118 16-0052: DDR5 temperature sensor: vendor 0x0e:0x8f revision 1.2
... (supend and resume) ...
[ 1621.796873] spd5118 16-0050: Failed to write b = 0: -6
[ 1621.796889] spd5118 16-0050: PM: dpm_run_callback(): spd5118_resume [spd5118] returns -6
[ 1621.796962] spd5118 16-0050: PM: failed to resume async: error -6
[ 1621.797139] spd5118 16-0052: Failed to write b = 0: -6
[ 1621.797148] spd5118 16-0052: PM: dpm_run_callback(): spd5118_resume [spd5118] returns -6
[ 1621.797170] spd5118 16-0052: PM: failed to resume async: error -6

It happens only after resuming from S3 (so far at least).

Reading the temperature still seems to work after resume. I see values in /sys/class/hwmon/hwmon{4,5}/temp1_input that change very slightly every few seconds and seem sensible (around 48 degree Celsius).
So very low-prio/minor issue.

Detailed sensor readings:

# ll /sys/class/hwmon/hwmon4/
lrwxrwxrwx 1 root root    0 Jan 18 09:02 device -> ../../../16-0050
-r--r--r-- 1 root root 4096 Jan 17 18:32 name
drwxr-xr-x 2 root root    0 Jan 18 09:02 power
lrwxrwxrwx 1 root root    0 Jan 18 09:02 subsystem -> ../../../../../../../class/hwmon
-rw-r--r-- 1 root root 4096 Jan 18 09:02 temp1_crit
-r--r--r-- 1 root root 4096 Jan 18 09:02 temp1_crit_alarm
-rw-r--r-- 1 root root 4096 Jan 18 09:02 temp1_enable
-r--r--r-- 1 root root 4096 Jan 18 09:02 temp1_input
-rw-r--r-- 1 root root 4096 Jan 18 09:02 temp1_lcrit
-r--r--r-- 1 root root 4096 Jan 18 09:02 temp1_lcrit_alarm
-rw-r--r-- 1 root root 4096 Jan 18 09:02 temp1_max
-r--r--r-- 1 root root 4096 Jan 18 09:02 temp1_max_alarm
-rw-r--r-- 1 root root 4096 Jan 18 09:02 temp1_min
-r--r--r-- 1 root root 4096 Jan 18 09:02 temp1_min_alarm
-rw-r--r-- 1 root root 4096 Jan 18 09:02 uevent

# cat /sys/class/hwmon/hwmon4/*
cat: /sys/class/hwmon/hwmon4/device: Is a directory
spd5118
cat: /sys/class/hwmon/hwmon4/power: Is a directory
cat: /sys/class/hwmon/hwmon4/subsystem: Is a directory
85000
0
1
47500
0
0
55000
0
0
0

# cat /sys/class/hwmon/hwmon5/*
cat: /sys/class/hwmon/hwmon5/device: Is a directory
spd5118
cat: /sys/class/hwmon/hwmon5/power: Is a directory
cat: /sys/class/hwmon/hwmon5/subsystem: Is a directory
85000
0
1
48000
0
0
55000
0
0
0

Steps to reproduce

1. Boot
2. Suspend to S3 with systemctl suspend
3. Resume