latest 2.6.23 git missing ACPI POWER_SUPPLY

latest 2.6.23 git missing ACPI POWER_SUPPLY

[Jeff Chua]

Just pulled latest linux-2.6, and couldn't get ACPI to detect
ACPI_BATTERY and ACPI_AC.

It seems ACPI POWER_SUPPLY is still missing.

Thanks,
Jeff.

Re: latest 2.6.23 git missing ACPI POWER_SUPPLY

[Frans Pop]

Jeff Chua wrote:
> Just pulled latest linux-2.6, and couldn't get ACPI to detect
> ACPI_BATTERY and ACPI_AC.
> 
> It seems ACPI POWER_SUPPLY is still missing.

I had the same problem. It turns out you need to enable
   drivers -> Power supply class support
(either built in or as module) to get ACPI AC/Battery support.

I must say that having these relatively top-level ACPI settings depending on something that is relatively buried away is not very intuitive!
Especially not since at first glance you don't really seem to need that option except for some weird hardware.

CC'ing ACPI mailing list for other opinions.

Re: latest 2.6.23 git missing ACPI POWER_SUPPLY

[Alexey Starikovskiy]

[-- Attachment #1: Type: text/plain, Size: 965 bytes --]

Frans Pop wrote:
> Jeff Chua wrote:
>> Just pulled latest linux-2.6, and couldn't get ACPI to detect
>> ACPI_BATTERY and ACPI_AC.
>>
>> It seems ACPI POWER_SUPPLY is still missing.
> 
> I had the same problem. It turns out you need to enable
>    drivers -> Power supply class support
> (either built in or as module) to get ACPI AC/Battery support.
> 
> I must say that having these relatively top-level ACPI settings depending on something that is relatively buried away is not very intuitive!
> Especially not since at first glance you don't really seem to need that option except for some weird hardware.
> 
> CC'ing ACPI mailing list for other opinions.
I was thinking that 'select' might be more appropriate here...
Please take a look on attached patch.
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[-- Attachment #2: use_select_for_power_class.patch --]
[-- Type: text/x-diff, Size: 1350 bytes --]

ACPI: use select POWER_SUPPLY for AC, BATTERY and SBS

From: Alexey Starikovskiy <astarikovskiy@suse.de>

POWER_SUPPLY is needed for AC, battery, and SBS sysfs support.
Use 'select' instead of 'depends on', as it is will not be selected
by anything else, leading to confusion.

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
---

 drivers/acpi/Kconfig |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 5d0e26a..ecd87d7 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -88,7 +88,8 @@ config ACPI_PROC_EVENT
 
 config ACPI_AC
 	tristate "AC Adapter"
-	depends on X86 && POWER_SUPPLY
+	depends on X86
+	select POWER_SUPPLY
 	default y
 	help
 	  This driver adds support for the AC Adapter object, which indicates
@@ -97,7 +98,8 @@ config ACPI_AC
 
 config ACPI_BATTERY
 	tristate "Battery"
-	depends on X86 && POWER_SUPPLY
+	depends on X86
+	select POWER_SUPPLY
 	default y
 	help
 	  This driver adds support for battery information through
@@ -352,7 +354,7 @@ config ACPI_HOTPLUG_MEMORY
 config ACPI_SBS
 	tristate "Smart Battery System"
 	depends on X86
-	depends on POWER_SUPPLY
+	select POWER_SUPPLY
 	help
 	  This driver adds support for the Smart Battery System, another
 	  type of access to battery information, found on some laptops.

Re: latest 2.6.23 git missing ACPI POWER_SUPPLY

[Frans Pop]

On Monday 22 October 2007, Alexey Starikovskiy wrote:
> Frans Pop wrote:
> > I must say that having these relatively top-level ACPI settings
> > depending on something that is relatively buried away is not very
> > intuitive! Especially not since at first glance you don't really seem
> > to need that option except for some weird hardware.
> >
> > CC'ing ACPI mailing list for other opinions.
>
> I was thinking that 'select' might be more appropriate here...
> Please take a look on attached patch.

Perfect! The power supply option can now no longer be unselected while 
battery or ac options are selected and will automatically get correct 
modular or compiled in status. Thanks.

Tested-by: Frans Pop <elendil@planet.nl>

Re: latest 2.6.23 git missing ACPI POWER_SUPPLY

[Jeff Chua]

On 10/22/07, Frans Pop <elendil@planet.nl> wrote:
> On Monday 22 October 2007, Alexey Starikovskiy wrote:
> > Frans Pop wrote:
> > > I must say that having these relatively top-level ACPI settings
> > > depending on something that is relatively buried away is not very
> > > intuitive!

That's really something that's hard to imagine having another
dependency somewhere else. Got it now.

Thanks for your help.

Jeff.