linux-kernel - Re: [2.624-rc1 regression] lost battery information

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Date:	Fri, 26 Oct 2007 22:32:51 +0400
From:	Alexey Starikovskiy <aystarik@...il.com>
To:	Andrey Borzenkov <arvidjaar@...l.ru>
CC:	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [2.624-rc1 regression] lost battery information

Andrey Borzenkov wrote:
> On Friday 26 October 2007, Alexey Starikovskiy wrote:
>> Andrey Borzenkov wrote:
>>> On Friday 26 October 2007, Alexey Starikovskiy wrote:
>>>> Andrey Borzenkov wrote:
>>>>> I have lost battery in 2.6.24-rc1. Without CONFIG_ACPI_PROCFS I have
>>>>> no /proc/acpi/battery and cannot test netlink interface because right
>>>>> now there is no consumer of this.
>>>> for /sysfs interface you need to enable power_supply driver.
>>>> or you could apply this patch and power_supply will be selected by
>>>> battery itself.
>>> I already have power_supply module, battery depends on it and it is
>>> autloaded. But I fail to see where I can get battery info in /sys
>> Intent was to put into /sysfs same information:
>> aystarik@...sung:~/client_conf$ ls /sys/class/power_supply/BAT1/
>> alarm  charge_full  charge_full_design  charge_now  current_now  device 
>> manufacturer  model_name  present  status  subsystem  technology  type 
>> uevent  voltage_min_design  voltage_now
>>
> 
> is it in -rc1 or can you point me to the patch (I'd rather avoid having to 
> pull from different git trees). Thank you.
No, it should be rc1.
> 
> And what about ACPI_PROCFS case? It still needs attention I believe.
As you can see, there is info in /proc too:
>> aystarik@...sung:~/client_conf$ cat /proc/acpi/battery/BAT1/*
>> alarm:                   unsupported
>> present:                 yes
>> design capacity:         4300 mAh
>> last full capacity:      4172 mAh
>> battery technology:      rechargeable
>> design voltage:          14800 mV
>> design capacity warning: 208 mAh
>> design capacity low:     41 mAh
>> capacity granularity 1:  41 mAh
>> capacity granularity 2:  41 mAh
>> model number:            Bat1
>> serial number:           001
>> battery type:            LION
>> OEM info:                Pacifi
>> present:                 yes
>> capacity state:          ok
>> charging state:          charged
>> present rate:            0 mA
>> remaining capacity:      4172 mAh
>> present voltage:         16518 mV

Your cat's "Bad address" means -EFAULT, according to "man errno".
Please apply this patch to see what exactly failed...


View attachment "x.patch" of type "text/x-diff" (1373 bytes)