Problem with ACPI EC building

[IncitatusKonsul]

Hi, I have the problem with ACPI EC building, below I am attaching the ending of the terminal answer:

user@debian:~/dragon_center_linux$ sudo ./install_dragon_service.sh
[…]
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Starting installation of acpi_ec module...
Building module...
make -C /lib/modules/6.1.0-41-amd64/build M=/home/user/dragon_center_linux/acpi_ec/"build" src=/home/user/dragon_center_linux/acpi_ec/"src" modules
make[1]: Entering directory '/usr/src/linux-headers-6.1.0-41-amd64'
  CC [M]  /home/user/dragon_center_linux/acpi_ec/build/acpi_ec.o
/home/user/dragon_center_linux/acpi_ec/src/acpi_ec.c: In function ‘acpi_ec_init’:
/home/user/dragon_center_linux/acpi_ec/src/acpi_ec.c:197:52: error: macro "class_create" requires 2 arguments, but only 1 given
  197 |     if (IS_ERR(dev_class = class_create(DEVICE_NAME))) {
      |                                                    ^
In file included from /usr/src/linux-headers-6.1.0-41-common/include/linux/device.h:31,
                 from /usr/src/linux-headers-6.1.0-41-common/include/linux/acpi.h:15,
                 from /home/user/dragon_center_linux/acpi_ec/src/acpi_ec.c:24:
/usr/src/linux-headers-6.1.0-41-common/include/linux/device/class.h:273: note: macro "class_create" defined here
  273 | #define class_create(owner, name)               \
      | 
/home/user/dragon_center_linux/acpi_ec/src/acpi_ec.c:197:28: error: ‘class_create’ undeclared (first use in this function); did you mean ‘vfs_create’?
  197 |     if (IS_ERR(dev_class = class_create(DEVICE_NAME))) {
      |                            ^~~~~~~~~~~~
      |                            vfs_create
/home/user/dragon_center_linux/acpi_ec/src/acpi_ec.c:197:28: note: each undeclared identifier is reported only once for each function it appears in
make[2]: *** [/usr/src/linux-headers-6.1.0-41-common/scripts/Makefile.build:255: /home/user/dragon_center_linux/acpi_ec/build/acpi_ec.o] Error 1
make[1]: *** [/usr/src/linux-headers-6.1.0-41-common/Makefile:2050: /home/user/dragon_center_linux/acpi_ec/build] Error 2
make[1]: Leaving directory '/usr/src/linux-headers-6.1.0-41-amd64'
make: *** [Makefile:16: all] Error 2

I will be grateful for your help!

[agnath18K]

This is failing due to an old kernel API usage.
On newer kernels (e.g. Debian 6.1.x), class_create() requires two arguments, but the code still uses the old 1-arg form.

Edit acpi_ec/src/acpi_ec.c
Replace:
class_create(DEVICE_NAME)
with:
class_create(THIS_MODULE, DEVICE_NAME)

Make sure <linux/module.h> is included.

Recompile the module.

I don’t have a Linux machine right now (moved to macOS for work), so I can’t push a tested fix, but this change is enough to get it compiling on current kernels.