[Bug 215531] Lenovo charge limit feature stops 1% short of the configured limit and says it's still charging

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=215531

Hans de Goede (jwrdegoede@fedoraproject.org) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |jwrdegoede@fedoraproject.or
                   |                            |g
         Resolution|---                         |CODE_FIX

--- Comment #1 from Hans de Goede (jwrdegoede@fedoraproject.org) ---
This has been fixed in kernels >= 5.16.3 with this commit:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e96c1197aca628f7d2480a1cc3214912b40b3414

With these kernels:

cat /sys/class/power_supply/BAT0/status

Will now output "not charging" under these conditions. This is what the
device's firmware gives us, so this is the best the kernel can do. Translating
"not charging" + the capacity in % being more or less equal to the
charge_control_end_threshold(1) value to "full" is something for userspace
(upower) to sort out. Since we are looking on adding UI options to set
charge_control_end_threshold, it would be good if we can get upower reporting
"full" under these conditions.

Note the upower issue should be re-opened to track this.

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