The first patch uses kernel universal linked list to implement
ax25_dev_list, which makes the operation of the list easier.
The second and third patch fix reference count leak issues of
the object "ax25_dev" and "net_device". The last patch uses
ax25_dev_put() to replace kfree() in ax25_dev_free().

You can see the former discussion in the following link:
https://lore.kernel.org/netdev/20240501060218.32898-1-duoming@zju.edu.cn/

Duoming Zhou (4):
  ax25: Use kernel universal linked list to implement ax25_dev_list
  ax25: Fix reference count leak issues of ax25_dev
  ax25: Fix reference count leak issues of net_device
  ax25: Change kfree() in ax25_dev_free() to ax25_dev_put()

 include/net/ax25.h  |  3 +--
 net/ax25/ax25_dev.c | 52 +++++++++++++++++----------------------------
 2 files changed, 20 insertions(+), 35 deletions(-)

-- 
2.17.1

…
>  include/net/ax25.h  |  3 +--
>  net/ax25/ax25_dev.c | 52 +++++++++++++++++----------------------------
>  2 files changed, 20 insertions(+), 35 deletions(-)

Did you accidentally overlook to provide corresponding patch version descriptions
(or changelogs) for this change iteration?
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?h=v6.9-rc7#n725

Regards,
Markus