[Bug 2091499] [NEW] librem-ec-acpi-dkms FTBS in Noble with linux-6.11-hwe kernel

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[ Impact ]

librem-ec-acpi-dkms does not compile from source in Noble with kernel
6.11:

/var/lib/dkms/librem_ec_acpi/0.9.2/build/librem_ec_acpi.c:782:10: error: ‘struct acpi_driver’ has no member named ‘owner’
  782 |         .owner = THIS_MODULE,
      |          ^~~~~
In file included from ./arch/x86/include/asm/mem_encrypt.h:15,
                 from ./include/linux/mem_encrypt.h:17,
                 from ./arch/x86/include/asm/processor-flags.h:6,
                 from ./arch/x86/include/asm/irqflags.h:5,
                 from ./include/linux/irqflags.h:18,
                 from ./include/linux/spinlock.h:59,
                 from ./include/linux/mmzone.h:8,
                 from ./include/linux/gfp.h:7,
                 from ./include/linux/slab.h:16,
                 from ./include/linux/resource_ext.h:11,
                 from ./include/linux/acpi.h:13,
                 from /var/lib/dkms/librem_ec_acpi/0.9.2/build/librem_ec_acpi.c:16:
./include/linux/init.h:180:21: warning: initialization of ‘char’ from ‘struct module *’ makes integer from pointer without a cast [-Wint-conversion]
  180 | #define THIS_MODULE (&__this_module)
      |                     ^
/var/lib/dkms/librem_ec_acpi/0.9.2/build/librem_ec_acpi.c:782:18: note: in expansion of macro ‘THIS_MODULE’
  782 |         .owner = THIS_MODULE,
      |                  ^~~~~~~~~~~
./include/linux/init.h:180:21: note: (near initialization for ‘librem_ec_driver.class[0]’)
  180 | #define THIS_MODULE (&__this_module)
      |                     ^
/var/lib/dkms/librem_ec_acpi/0.9.2/build/librem_ec_acpi.c:782:18: note: in expansion of macro ‘THIS_MODULE’
  782 |         .owner = THIS_MODULE,
      |                  ^~~~~~~~~~~
./include/linux/init.h:180:21: error: initializer element is not computable at load time
  180 | #define THIS_MODULE (&__this_module)
      |                     ^
/var/lib/dkms/librem_ec_acpi/0.9.2/build/librem_ec_acpi.c:782:18: note: in expansion of macro ‘THIS_MODULE’
  782 |         .owner = THIS_MODULE,
      |                  ^~~~~~~~~~~
./include/linux/init.h:180:21: note: (near initialization for ‘librem_ec_driver.class[0]’)
  180 | #define THIS_MODULE (&__this_module)
      |                     ^
/var/lib/dkms/librem_ec_acpi/0.9.2/build/librem_ec_acpi.c:782:18: note: in expansion of macro ‘THIS_MODULE’
  782 |         .owner = THIS_MODULE,
      |                  ^~~~~~~~~~~
/var/lib/dkms/librem_ec_acpi/0.9.2/build/librem_ec_acpi.c:780:46: warning: missing braces around initializer [-Wmissing-braces]
  780 | static struct acpi_driver librem_ec_driver = {
      |    

[ Test case ]

Install the latest linux-6.11 kernel on Noble:

$ sudo add-apt-repository ppa:canonical-kernel-team/ppa
$ sudo apt update
$ sudo apt install linux-image-6.11.0-12-generic \
                   linux-modules-6.11.0-12-generic \
                   linux-modules-extra-6.11.0-12-generic \
                   linux-headers-6.11.0-12-generic

Install librem-ec-acpi-dkms:

$ sudo apt install librem-ec-acpi-dkms

Load the module:

$ sudo modprobe librem-ec-acpi

[ Fix ]

Patch the code to properly support the new linux 6.11 ABI.

[ Regression potential ]

A regression is unlikely due to the limited scope of the patch.

** Affects: librem-ec-acpi (Ubuntu)
     Importance: Undecided
     Assignee: Massimiliano Pellizzer (mpellizzer)
         Status: In Progress

** Affects: librem-ec-acpi (Ubuntu Noble)
     Importance: Undecided
         Status: In Progress


** Tags: patch
-- 
librem-ec-acpi-dkms FTBS in Noble with linux-6.11-hwe kernel
https://bugs.launchpad.net/bugs/2091499
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