xtrx-dkms FTBS in Noble with the linux-6.17 kernel

[John Cabaj]

[ Impact ]

DKMS make.log for xtrx-0.0.1+git20190320.5ae3a3e-3.2ubuntu2 for kernel 6.17.0-7-generic (x86_64)
Wed Dec 17 22:44:19 UTC 2025
make: Entering directory '/usr/src/linux-headers-6.17.0-7-generic'
make[1]: Entering directory '/var/lib/dkms/xtrx/0.0.1+git20190320.5ae3a3e-3.2ubuntu2/build'
warning: the compiler differs from the one used to build the kernel
  The kernel was built by: x86_64-linux-gnu-gcc-13 (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0
  You are using: gcc-13 (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0
  CC [M] xtrx.o
xtrx.c: In function ‘xtrx_uart_do_tx’:
xtrx.c:472:28: error: ‘struct uart_state’ has no member named ‘xmit’
  472 | xmit = &port->state->xmit;
      | ^~
xtrx.c:473:13: error: implicit declaration of function ‘uart_circ_empty’; did you mean ‘uart_lsr_tx_empty’? [-Werror=implicit-function-declaration]
  473 | if (uart_circ_empty(xmit))
      | ^~~~~~~~~~~~~~~
      | uart_lsr_tx_empty
xtrx.c:480:25: error: invalid use of undefined type ‘struct circ_buf’
  480 | c = xmit->buf[xmit->tail] & 0xff;
      | ^~
xtrx.c:480:35: error: invalid use of undefined type ‘struct circ_buf’
  480 | c = xmit->buf[xmit->tail] & 0xff;
      | ^~
xtrx.c:484:21: error: invalid use of undefined type ‘struct circ_buf’
  484 | xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
      | ^~
xtrx.c:484:35: error: invalid use of undefined type ‘struct circ_buf’
  484 | xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
      | ^~
xtrx.c:490:13: error: implicit declaration of function ‘uart_circ_chars_pending’ [-Werror=implicit-function-declaration]
  490 | if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
      | ^~~~~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
make[3]: *** [/usr/src/linux-headers-6.17.0-7-generic/scripts/Makefile.build:287: xtrx.o] Error 1
make[2]: *** [/usr/src/linux-headers-6.17.0-7-generic/Makefile:2016: .] Error 2
make[1]: *** [/usr/src/linux-headers-6.17.0-7-generic/Makefile:248: __sub-make] Error 2
make[1]: Leaving directory '/var/lib/dkms/xtrx/0.0.1+git20190320.5ae3a3e-3.2ubuntu2/build'
make: *** [Makefile:248: __sub-make] Error 2
make: Leaving directory '/usr/src/linux-headers-6.17.0-7-generic'

[ Test case ]

Install the latest linux-6.17 kernel on Noble:

$ sudo add-apt-repository ppa:canonical-kernel-team/ppa3
$ sudo apt install linux-generic-hwe-24.04-edge

Install xtrx-dkms:

$ sudo apt install xtrx-dkms

Load the module:

$ sudo modprobe xtrx

The same procedure must be repeated on linux-6.8 and linux-6.14 to test for possible regressions.

[ Fix ]

Patch from xtrx-dkms upstream (https://github.com/myriadrf/xtrx_linux_pcie_drv/commit/dfae8d33501d46861cd25e13957775b5f626b2a6)

-debian/patches/0005-fix-build-error-with-kernel-6.10.patch

[ Regression potential ]

We may experience regressions in systems that are using the xtrx drivers, especially with kernels >= 6.8 kernel.

[John Cabaj (john-cabaj)]

0.0.1+git20190320.5ae3a3e-3.2ubuntu2 -> 0.0.1+git20190320.5ae3a3e-3.2ubuntu2.1 debdiff

[John Cabaj (john-cabaj)]

Packages build and available here - https://launchpad.net/~john-cabaj/+archive/ubuntu/hwe-6.17-dkms

[Daniel Letzeisen (dtl131)]

That's nice, because no one ever updated this package for 6.14 HWE either - bug 2098021

[Massimiliano Pellizzer (mpellizzer)]

Uploaded, thanks

[Nick Rosbrook (enr0n)]

Hello John, or anyone else affected,

Accepted xtrx-dkms into noble-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/xtrx-dkms/0.0.1+git20190320.5ae3a3e-3.2ubuntu2.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-noble to verification-done-noble. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-noble. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

[John Cabaj (john-cabaj)]

Modules built and installed successfully. Modules loaded successfully.

Noble 6.8 kernel:

root@noble-lts-vm:~# uname -r
6.8.0-90-generic
root@noble-lts-vm:~# modprobe xtrx
root@noble-lts-vm:~#

Noble 6.14 kernel:

root@noble-614-vm:~# uname -r
6.14.0-37-generic
root@noble-614-vm:~# modprobe xtrx
root@noble-614-vm:~#

Noble 6.17 kernel:

root@noble-hwe-vm:~# uname -r
6.17.0-7-generic
root@noble-hwe-vm:~# modprobe xtrx
root@noble-hwe-vm:~#