Hi, On my N900, with kernel 4.15-rc6 (I realise it's not the very latest), the (charging) status of the battery is confusing or plain wrong: When no charger is connected, this is reported: # cat /sys/devices/platform/68000000.ocp/48072000.i2c/i2c-2/2-0055/power_supply/bq27200-0/status Not charging When a charged is connected, this is reported: # cat /sys/devices/platform/68000000.ocp/48072000.i2c/i2c-2/2-0055/power_supply/bq27200-0/status Charging The odd part here is "Not charging" -- on all my other devices, a device that is discharging is reported as "Discharging", not as "Not charging". On the Morotola Droid 4, this is reported as: # cat /sys/devices/platform/44000000.ocp/48098000.spi/spi_master/spi0/spi0.0/48098000.spi:pmic@0:battery/power_supply/battery/status Charging # cat /sys/devices/platform/44000000.ocp/48098000.spi/spi_master/spi0/spi0.0/48098000.spi:pmic@0:battery/power_supply/battery/status Discharging The same is true for my ARM exynos chromebook - also "Charging" and "Discharging". The N900 reporting "Not charging" when it is in fact discharging confuses userspace, such as UPower. I am not particularly versed in the N900/RX-51 drivers, but from a quick glance this line looks suspicious [1]. Cheers, Merlijn [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/power/supply/bq27xxx_battery.c#n1673
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