On Wed, 15 Nov 2023 08:57:29 +0900, Tatsunosuke Tobita wrote:

Even if a user does not use their AES pen for an extended period,
the battery power supply attributes continue to exist.
This results in the desktop showing battery status for a pen
that is no longer in use and which may in fact be in a different
state (e.g. the user may be charging the pen).
To avoid confusion and ensure userspace has an accurate view
of the battery state, this patch automatically removes
the power_supply after 30 minutes of inactivity.

[...]

Applied to https://git.kernel.org/pub/scm/linux/kernel/git/hid/hid.git (for-6.8/wacom), thanks!

[1/1] HID: wacom: Remove AES power_supply after extended inactivity
      https://git.kernel.org/hid/hid/c/fd2a9b29dc9c

Cheers,
-- 
Benjamin Tissoires [off-list ref]