[PATCH 0/13] ACPI / PM: Rework power resources management

[PATCH 0/13] ACPI / PM: Rework power resources management

[Rafael J. Wysocki]

Hi,

Unfortunately there are a few problems with ACPI power resources management
that should be fixed by the following series of patches.

Patch [1/13] is necessary to fix a recent regression in the mainline kernel and
patch [2/13] also should go into 2.6.37 IMO.  The remaining patches are not so
urgent, but they all are necessary.

[1/13] - Fix regression if fan resume resulting from the rework of power
         resources reference counting.

[2/13] - Do not reference count power resources that can't be turned on.

[3/13] - Rework acpi_power_get_inferred_state() so that it doesn't update
         device->power.state behind the caller's back.

[4/13] - Introduce functions for handling lists of power resources.

[5/13] - Introduce helper function for reference counting power resources
         for a given device and power state.

[6/13] - Introduce function for reading device power state without modifying
         the device object.

[7/13] - Add function for device power state initialization.

[8/13] - Add function for updating device power state in a consistent way.

[9/13] - Register acpi_power_driver before scanning the root of the namespace.

[10/13] - Add power resource ACPI device objects as soon as they are needed.

[11/13] - Rework the management of ACPI power resources in the ACPI fan driver.

[12/13] - Drop acpi_bus_get_power() that has no users now.

[13/13] - Drop acpi_power_nocheck which isn't necessary any more.

The patches have been tested on my HP nx6325 (which is the only machine using
ACPI power resources I have) and a combo patch functionally equivalen to this
series has been tested by Maciej Rutecki.

Please apply.

Thanks,
Rafael

Re: [PATCH 0/13] ACPI / PM: Rework power resources management

[Sedat Dilek]

Hi Rafael,

I applied your patch-set against linux-next (next-20101124) with
backlight-type patches from Matthew.

# grep "error:" build_linux-next_next20101124.dileks.2.log
/home/sd/src/linux-2.6/linux-2.6.37-rc3/debian/build/source_i386_none/drivers/platform/x86/fujitsu-laptop.c:692:
error: implicit declaration of function ‘acpi_bus_get_power’

Looking into the source:

# grep acpi_bus_get_power -r
/home/sd/src/linux-2.6/linux-2.6.37-rc3/debian/build/source_i386_none/drivers/platform/x86/
/home/sd/src/linux-2.6/linux-2.6.37-rc3/debian/build/source_i386_none/drivers/platform/x86/fujitsu-laptop.c:
   result = acpi_bus_get_power(fujitsu->acpi_handle, &state);
/home/sd/src/linux-2.6/linux-2.6.37-rc3/debian/build/source_i386_none/drivers/platform/x86/fujitsu-laptop.c:
   result = acpi_bus_get_power(fujitsu_hotkey->acpi_handle, &state);

Checking the acpi tree:

# grep "acpi_bus_get_power(" -r
/home/sd/src/linux-2.6/linux-2.6.37-rc3/debian/build/source_i386_none/drivers/acpi/
/home/sd/src/linux-2.6/linux-2.6.37-rc3/debian/build/source_i386_none/drivers/acpi/bus.c:static
int __acpi_bus_get_power(struct acpi_device *device, int *state)
/home/sd/src/linux-2.6/linux-2.6.37-rc3/debian/build/source_i386_none/drivers/acpi/bus.c:
      result = __acpi_bus_get_power(device, &state);
/home/sd/src/linux-2.6/linux-2.6.37-rc3/debian/build/source_i386_none/drivers/acpi/bus.c:
      result = __acpi_bus_get_power(device, &state);

Just wanna let you know.

Kind Regards,
- Sedat -

Re: [PATCH 0/13] ACPI / PM: Rework power resources management

[Sedat Dilek]

On Thu, Nov 25, 2010 at 10:11 AM, Sedat Dilek
<sedat.dilek@googlemail.com> wrote:
> Hi Rafael,
>
> I applied your patch-set against linux-next (next-20101124) with
> backlight-type patches from Matthew.
>
> # grep "error:" build_linux-next_next20101124.dileks.2.log
> /home/sd/src/linux-2.6/linux-2.6.37-rc3/debian/build/source_i386_none/drivers/platform/x86/fujitsu-laptop.c:692:
> error: implicit declaration of function ‘acpi_bus_get_power’
>
> Looking into the source:
>
> # grep acpi_bus_get_power -r
> /home/sd/src/linux-2.6/linux-2.6.37-rc3/debian/build/source_i386_none/drivers/platform/x86/
> /home/sd/src/linux-2.6/linux-2.6.37-rc3/debian/build/source_i386_none/drivers/platform/x86/fujitsu-laptop.c:
>   result = acpi_bus_get_power(fujitsu->acpi_handle, &state);
> /home/sd/src/linux-2.6/linux-2.6.37-rc3/debian/build/source_i386_none/drivers/platform/x86/fujitsu-laptop.c:
>   result = acpi_bus_get_power(fujitsu_hotkey->acpi_handle, &state);
>
> Checking the acpi tree:
>
> # grep "acpi_bus_get_power(" -r
> /home/sd/src/linux-2.6/linux-2.6.37-rc3/debian/build/source_i386_none/drivers/acpi/
> /home/sd/src/linux-2.6/linux-2.6.37-rc3/debian/build/source_i386_none/drivers/acpi/bus.c:static
> int __acpi_bus_get_power(struct acpi_device *device, int *state)
> /home/sd/src/linux-2.6/linux-2.6.37-rc3/debian/build/source_i386_none/drivers/acpi/bus.c:
>      result = __acpi_bus_get_power(device, &state);
> /home/sd/src/linux-2.6/linux-2.6.37-rc3/debian/build/source_i386_none/drivers/acpi/bus.c:
>      result = __acpi_bus_get_power(device, &state);
>
> Just wanna let you know.
>
> Kind Regards,
> - Sedat -
>

Guess this is conflicting with your patch
"12-13-ACPI-PM-Drop-acpi_bus_get_power.patch".

- Sedat -

P.S.: Note to myself, add the following snippet for testing purposes:

[ debian/config/i386/none/config.686 ]
...
##
## file: drivers/platform/x86/Kconfig
##
# CONFIG_FUJITSU_LAPTOP is not set
- EOT -

Re: [PATCH 0/13] ACPI / PM: Rework power resources management

[Sedat Dilek]

On Thu, Nov 25, 2010 at 10:41 AM, Sedat Dilek
<sedat.dilek@googlemail.com> wrote:
> On Thu, Nov 25, 2010 at 10:11 AM, Sedat Dilek
> <sedat.dilek@googlemail.com> wrote:
>> Hi Rafael,
>>
[ ... ]
>> # grep "error:" build_linux-next_next20101124.dileks.2.log
>> /home/sd/src/linux-2.6/linux-2.6.37-rc3/debian/build/source_i386_none/drivers/platform/x86/fujitsu-laptop.c:692:
>> error: implicit declaration of function ‘acpi_bus_get_power’
[ ... ]
>
> Guess this is conflicting with your patch
> "12-13-ACPI-PM-Drop-acpi_bus_get_power.patch".
>
> - Sedat -
>
> P.S.: Note to myself, add the following snippet for testing purposes:
>
> [ debian/config/i386/none/config.686 ]
> ...
> ##
> ## file: drivers/platform/x86/Kconfig
> ##
> # CONFIG_FUJITSU_LAPTOP is not set
> - EOT -
>

Applied on top of linux-next (next-20101125) and running.

     Tested-by: Sedat Dilek <sedat.dilek@gmail.com>

- Sedat -

Re: [PATCH 0/13] ACPI / PM: Rework power resources management

[Rafael J. Wysocki]

On Thursday, November 25, 2010, Sedat Dilek wrote:
> On Thu, Nov 25, 2010 at 10:41 AM, Sedat Dilek
> <sedat.dilek@googlemail.com> wrote:
> > On Thu, Nov 25, 2010 at 10:11 AM, Sedat Dilek
> > <sedat.dilek@googlemail.com> wrote:
> >> Hi Rafael,
> >>
> [ ... ]
> >> # grep "error:" build_linux-next_next20101124.dileks.2.log
> >> /home/sd/src/linux-2.6/linux-2.6.37-rc3/debian/build/source_i386_none/drivers/platform/x86/fujitsu-laptop.c:692:
> >> error: implicit declaration of function ‘acpi_bus_get_power’
> [ ... ]
> >
> > Guess this is conflicting with your patch
> > "12-13-ACPI-PM-Drop-acpi_bus_get_power.patch".
> >
> > - Sedat -
> >
> > P.S.: Note to myself, add the following snippet for testing purposes:
> >
> > [ debian/config/i386/none/config.686 ]
> > ...
> > ##
> > ## file: drivers/platform/x86/Kconfig
> > ##
> > # CONFIG_FUJITSU_LAPTOP is not set
> > - EOT -
> >
> 
> Applied on top of linux-next (next-20101125) and running.
> 
>      Tested-by: Sedat Dilek <sedat.dilek@gmail.com>

Great, thanks a lot!

I should have said the patchset is on top of the current Linus' tree.

Rafael

Re: [PATCH 0/13] ACPI / PM: Rework power resources management

[Rafael J. Wysocki]

On Thursday, November 25, 2010, Rafael J. Wysocki wrote:
> On Thursday, November 25, 2010, Sedat Dilek wrote:
> > On Thu, Nov 25, 2010 at 10:41 AM, Sedat Dilek
> > <sedat.dilek@googlemail.com> wrote:
> > > On Thu, Nov 25, 2010 at 10:11 AM, Sedat Dilek
> > > <sedat.dilek@googlemail.com> wrote:
> > >> Hi Rafael,
> > >>
> > [ ... ]
> > >> # grep "error:" build_linux-next_next20101124.dileks.2.log
> > >> /home/sd/src/linux-2.6/linux-2.6.37-rc3/debian/build/source_i386_none/drivers/platform/x86/fujitsu-laptop.c:692:
> > >> error: implicit declaration of function ‘acpi_bus_get_power’
> > [ ... ]
> > >
> > > Guess this is conflicting with your patch
> > > "12-13-ACPI-PM-Drop-acpi_bus_get_power.patch".
> > >
> > > - Sedat -
> > >
> > > P.S.: Note to myself, add the following snippet for testing purposes:
> > >
> > > [ debian/config/i386/none/config.686 ]
> > > ...
> > > ##
> > > ## file: drivers/platform/x86/Kconfig
> > > ##
> > > # CONFIG_FUJITSU_LAPTOP is not set
> > > - EOT -
> > >
> > 
> > Applied on top of linux-next (next-20101125) and running.
> > 
> >      Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
> 
> Great, thanks a lot!
> 
> I should have said the patchset is on top of the current Linus' tree.

Actually it also breaks with the current Linus' tree, but the appended patch
should fix it.

Thanks,
Rafael

---
From: Rafael J. Wysocki <rjw@sisk.pl>
Subject: Platform / x86: Make fujitsu_laptop use acpi_bus_update_power()

Use the new function acpi_bus_update_power(), which is safer than
acpi_bus_get_power(), for getting device power state in
acpi_fujitsu_add().

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
---
 drivers/platform/x86/fujitsu-laptop.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6/drivers/platform/x86/fujitsu-laptop.c
===================================================================
--- linux-2.6.orig/drivers/platform/x86/fujitsu-laptop.c
+++ linux-2.6/drivers/platform/x86/fujitsu-laptop.c
@@ -689,7 +689,7 @@ static int acpi_fujitsu_add(struct acpi_
 	if (error)
 		goto err_free_input_dev;
 
-	result = acpi_bus_get_power(fujitsu->acpi_handle, &state);
+	result = acpi_bus_update_power(fujitsu->acpi_handle, &state);
 	if (result) {
 		printk(KERN_ERR "Error reading power state\n");
 		goto err_unregister_input_dev;

Re: [PATCH 0/13] ACPI / PM: Rework power resources management

[Sedat Dilek]

On Thu, Nov 25, 2010 at 9:29 PM, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> On Thursday, November 25, 2010, Rafael J. Wysocki wrote:
>> On Thursday, November 25, 2010, Sedat Dilek wrote:
>> > On Thu, Nov 25, 2010 at 10:41 AM, Sedat Dilek
>> > <sedat.dilek@googlemail.com> wrote:
>> > > On Thu, Nov 25, 2010 at 10:11 AM, Sedat Dilek
>> > > <sedat.dilek@googlemail.com> wrote:
>> > >> Hi Rafael,
>> > >>
>> > [ ... ]
>> > >> # grep "error:" build_linux-next_next20101124.dileks.2.log
>> > >> /home/sd/src/linux-2.6/linux-2.6.37-rc3/debian/build/source_i386_none/drivers/platform/x86/fujitsu-laptop.c:692:
>> > >> error: implicit declaration of function ‘acpi_bus_get_power’
>> > [ ... ]
>> > >
>> > > Guess this is conflicting with your patch
>> > > "12-13-ACPI-PM-Drop-acpi_bus_get_power.patch".
>> > >
>> > > - Sedat -
>> > >
>> > > P.S.: Note to myself, add the following snippet for testing purposes:
>> > >
>> > > [ debian/config/i386/none/config.686 ]
>> > > ...
>> > > ##
>> > > ## file: drivers/platform/x86/Kconfig
>> > > ##
>> > > # CONFIG_FUJITSU_LAPTOP is not set
>> > > - EOT -
>> > >
>> >
>> > Applied on top of linux-next (next-20101125) and running.
>> >
>> >      Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
>>
>> Great, thanks a lot!
>>
>> I should have said the patchset is on top of the current Linus' tree.
>
> Actually it also breaks with the current Linus' tree, but the appended patch
> should fix it.
>
> Thanks,
> Rafael
>
> ---
> From: Rafael J. Wysocki <rjw@sisk.pl>
> Subject: Platform / x86: Make fujitsu_laptop use acpi_bus_update_power()
>
> Use the new function acpi_bus_update_power(), which is safer than
> acpi_bus_get_power(), for getting device power state in
> acpi_fujitsu_add().
>
> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
> ---
>  drivers/platform/x86/fujitsu-laptop.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> Index: linux-2.6/drivers/platform/x86/fujitsu-laptop.c
> ===================================================================
> --- linux-2.6.orig/drivers/platform/x86/fujitsu-laptop.c
> +++ linux-2.6/drivers/platform/x86/fujitsu-laptop.c
> @@ -689,7 +689,7 @@ static int acpi_fujitsu_add(struct acpi_
>        if (error)
>                goto err_free_input_dev;
>
> -       result = acpi_bus_get_power(fujitsu->acpi_handle, &state);
> +       result = acpi_bus_update_power(fujitsu->acpi_handle, &state);
>        if (result) {
>                printk(KERN_ERR "Error reading power state\n");
>                goto err_unregister_input_dev;
>

Sorry, I crapped my own quotes.
Missed to catch line #860?

- Sedat -

$ cd ~/src/linux-2.6/linux-2.6.37-rc3/debian/build/source_i386_none

$ grep --line-number -r acpi_bus_get_power -r drivers/platform/x86/
drivers/platform/x86/fujitsu-laptop.c:692:      result =
acpi_bus_get_power(fujitsu->acpi_handle, &state);
drivers/platform/x86/fujitsu-laptop.c:860:      result =
acpi_bus_get_power(fujitsu_hotkey->acpi_handle, &state);

Re: [PATCH 0/13] ACPI / PM: Rework power resources management

[Rafael J. Wysocki]

On Thursday, November 25, 2010, Sedat Dilek wrote:
> On Thu, Nov 25, 2010 at 9:29 PM, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> > On Thursday, November 25, 2010, Rafael J. Wysocki wrote:
> >> On Thursday, November 25, 2010, Sedat Dilek wrote:
> >> > On Thu, Nov 25, 2010 at 10:41 AM, Sedat Dilek
> >> > <sedat.dilek@googlemail.com> wrote:
> >> > > On Thu, Nov 25, 2010 at 10:11 AM, Sedat Dilek
> >> > > <sedat.dilek@googlemail.com> wrote:
> >> > >> Hi Rafael,
> >> > >>
> >> > [ ... ]
> >> > >> # grep "error:" build_linux-next_next20101124.dileks.2.log
> >> > >> /home/sd/src/linux-2.6/linux-2.6.37-rc3/debian/build/source_i386_none/drivers/platform/x86/fujitsu-laptop.c:692:
> >> > >> error: implicit declaration of function ‘acpi_bus_get_power’
> >> > [ ... ]
> >> > >
> >> > > Guess this is conflicting with your patch
> >> > > "12-13-ACPI-PM-Drop-acpi_bus_get_power.patch".
> >> > >
> >> > > - Sedat -
> >> > >
> >> > > P.S.: Note to myself, add the following snippet for testing purposes:
> >> > >
> >> > > [ debian/config/i386/none/config.686 ]
> >> > > ...
> >> > > ##
> >> > > ## file: drivers/platform/x86/Kconfig
> >> > > ##
> >> > > # CONFIG_FUJITSU_LAPTOP is not set
> >> > > - EOT -
> >> > >
> >> >
> >> > Applied on top of linux-next (next-20101125) and running.
> >> >
> >> >      Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
> >>
> >> Great, thanks a lot!
> >>
> >> I should have said the patchset is on top of the current Linus' tree.
> >
> > Actually it also breaks with the current Linus' tree, but the appended patch
> > should fix it.
> >
> > Thanks,
> > Rafael
> >
> > ---
> > From: Rafael J. Wysocki <rjw@sisk.pl>
> > Subject: Platform / x86: Make fujitsu_laptop use acpi_bus_update_power()
> >
> > Use the new function acpi_bus_update_power(), which is safer than
> > acpi_bus_get_power(), for getting device power state in
> > acpi_fujitsu_add().
> >
> > Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
> > ---
> >  drivers/platform/x86/fujitsu-laptop.c |    2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > Index: linux-2.6/drivers/platform/x86/fujitsu-laptop.c
> > ===================================================================
> > --- linux-2.6.orig/drivers/platform/x86/fujitsu-laptop.c
> > +++ linux-2.6/drivers/platform/x86/fujitsu-laptop.c
> > @@ -689,7 +689,7 @@ static int acpi_fujitsu_add(struct acpi_
> >        if (error)
> >                goto err_free_input_dev;
> >
> > -       result = acpi_bus_get_power(fujitsu->acpi_handle, &state);
> > +       result = acpi_bus_update_power(fujitsu->acpi_handle, &state);
> >        if (result) {
> >                printk(KERN_ERR "Error reading power state\n");
> >                goto err_unregister_input_dev;
> >
> 
> Sorry, I crapped my own quotes.
> Missed to catch line #860?

Indeed, sorry.  Updated patch is appended.

Rafael


---
From: Rafael J. Wysocki <rjw@sisk.pl>
Subject: Platform / x86: Make fujitsu_laptop use acpi_bus_update_power()

Use the new function acpi_bus_update_power(), which is safer than
acpi_bus_get_power(), for getting device power state in
acpi_fujitsu_add().

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
---
 drivers/platform/x86/fujitsu-laptop.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Index: linux-2.6/drivers/platform/x86/fujitsu-laptop.c
===================================================================
--- linux-2.6.orig/drivers/platform/x86/fujitsu-laptop.c
+++ linux-2.6/drivers/platform/x86/fujitsu-laptop.c
@@ -689,7 +689,7 @@ static int acpi_fujitsu_add(struct acpi_
 	if (error)
 		goto err_free_input_dev;
 
-	result = acpi_bus_get_power(fujitsu->acpi_handle, &state);
+	result = acpi_bus_update_power(fujitsu->acpi_handle, &state);
 	if (result) {
 		printk(KERN_ERR "Error reading power state\n");
 		goto err_unregister_input_dev;
@@ -857,7 +857,7 @@ static int acpi_fujitsu_hotkey_add(struc
 	if (error)
 		goto err_free_input_dev;
 
-	result = acpi_bus_get_power(fujitsu_hotkey->acpi_handle, &state);
+	result = acpi_bus_update_power(fujitsu_hotkey->acpi_handle, &state);
 	if (result) {
 		printk(KERN_ERR "Error reading power state\n");
 		goto err_unregister_input_dev;

Re: [PATCH 0/13] ACPI / PM: Rework power resources management

[Sedat Dilek]

On Thu, Nov 25, 2010 at 9:45 PM, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> On Thursday, November 25, 2010, Sedat Dilek wrote:
>> On Thu, Nov 25, 2010 at 9:29 PM, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> > On Thursday, November 25, 2010, Rafael J. Wysocki wrote:
>> >> On Thursday, November 25, 2010, Sedat Dilek wrote:
>> >> > On Thu, Nov 25, 2010 at 10:41 AM, Sedat Dilek
>> >> > <sedat.dilek@googlemail.com> wrote:
>> >> > > On Thu, Nov 25, 2010 at 10:11 AM, Sedat Dilek
>> >> > > <sedat.dilek@googlemail.com> wrote:
>> >> > >> Hi Rafael,
>> >> > >>
>> >> > [ ... ]
>> >> > >> # grep "error:" build_linux-next_next20101124.dileks.2.log
>> >> > >> /home/sd/src/linux-2.6/linux-2.6.37-rc3/debian/build/source_i386_none/drivers/platform/x86/fujitsu-laptop.c:692:
>> >> > >> error: implicit declaration of function ‘acpi_bus_get_power’
>> >> > [ ... ]
>> >> > >
>> >> > > Guess this is conflicting with your patch
>> >> > > "12-13-ACPI-PM-Drop-acpi_bus_get_power.patch".
>> >> > >
>> >> > > - Sedat -
>> >> > >
>> >> > > P.S.: Note to myself, add the following snippet for testing purposes:
>> >> > >
>> >> > > [ debian/config/i386/none/config.686 ]
>> >> > > ...
>> >> > > ##
>> >> > > ## file: drivers/platform/x86/Kconfig
>> >> > > ##
>> >> > > # CONFIG_FUJITSU_LAPTOP is not set
>> >> > > - EOT -
>> >> > >
>> >> >
>> >> > Applied on top of linux-next (next-20101125) and running.
>> >> >
>> >> >      Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
>> >>
>> >> Great, thanks a lot!
>> >>
>> >> I should have said the patchset is on top of the current Linus' tree.
>> >
>> > Actually it also breaks with the current Linus' tree, but the appended patch
>> > should fix it.
>> >
>> > Thanks,
>> > Rafael
>> >
>> > ---
>> > From: Rafael J. Wysocki <rjw@sisk.pl>
>> > Subject: Platform / x86: Make fujitsu_laptop use acpi_bus_update_power()
>> >
>> > Use the new function acpi_bus_update_power(), which is safer than
>> > acpi_bus_get_power(), for getting device power state in
>> > acpi_fujitsu_add().
>> >
>> > Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
>> > ---
>> >  drivers/platform/x86/fujitsu-laptop.c |    2 +-
>> >  1 file changed, 1 insertion(+), 1 deletion(-)
>> >
>> > Index: linux-2.6/drivers/platform/x86/fujitsu-laptop.c
>> > ===================================================================
>> > --- linux-2.6.orig/drivers/platform/x86/fujitsu-laptop.c
>> > +++ linux-2.6/drivers/platform/x86/fujitsu-laptop.c
>> > @@ -689,7 +689,7 @@ static int acpi_fujitsu_add(struct acpi_
>> >        if (error)
>> >                goto err_free_input_dev;
>> >
>> > -       result = acpi_bus_get_power(fujitsu->acpi_handle, &state);
>> > +       result = acpi_bus_update_power(fujitsu->acpi_handle, &state);
>> >        if (result) {
>> >                printk(KERN_ERR "Error reading power state\n");
>> >                goto err_unregister_input_dev;
>> >
>>
>> Sorry, I crapped my own quotes.
>> Missed to catch line #860?
>
> Indeed, sorry.  Updated patch is appended.
>
> Rafael
>
>
> ---
> From: Rafael J. Wysocki <rjw@sisk.pl>
> Subject: Platform / x86: Make fujitsu_laptop use acpi_bus_update_power()
>
> Use the new function acpi_bus_update_power(), which is safer than
> acpi_bus_get_power(), for getting device power state in
> acpi_fujitsu_add().
>
> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
> ---
>  drivers/platform/x86/fujitsu-laptop.c |    4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> Index: linux-2.6/drivers/platform/x86/fujitsu-laptop.c
> ===================================================================
> --- linux-2.6.orig/drivers/platform/x86/fujitsu-laptop.c
> +++ linux-2.6/drivers/platform/x86/fujitsu-laptop.c
> @@ -689,7 +689,7 @@ static int acpi_fujitsu_add(struct acpi_
>        if (error)
>                goto err_free_input_dev;
>
> -       result = acpi_bus_get_power(fujitsu->acpi_handle, &state);
> +       result = acpi_bus_update_power(fujitsu->acpi_handle, &state);
>        if (result) {
>                printk(KERN_ERR "Error reading power state\n");
>                goto err_unregister_input_dev;
> @@ -857,7 +857,7 @@ static int acpi_fujitsu_hotkey_add(struc
>        if (error)
>                goto err_free_input_dev;
>
> -       result = acpi_bus_get_power(fujitsu_hotkey->acpi_handle, &state);
> +       result = acpi_bus_update_power(fujitsu_hotkey->acpi_handle, &state);
>        if (result) {
>                printk(KERN_ERR "Error reading power state\n");
>                goto err_unregister_input_dev;
>

Feel free to add for
"Platform-x86-Make-fujitsu_laptop-use-acpi_bus_update_power.patch":

     Reported-and-Tested-by: Sedat Dilek <sedat.dilek@gmail.com>

- Sedat -

# grep OK setup_linux-next_next20101126.dileks.1.log | grep ACPI-PM
  (+) OK   ACPI-PM/1-13-ACPI-PM-Check-device-state-before-refcounting-power-resources.patch
  (+) OK   ACPI-PM/2-13-ACPI-PM-Do-not-refcount-power-resources-that-can-t-be-turned-on.patch
  (+) OK   ACPI-PM/3-13-ACPI-PM-Prevent-acpi_power_get_inferred_state-from-making-changes.patch
  (+) OK   ACPI-PM/4-13-ACPI-PM-Add-functions-for-manipulating-lists-of-power-resources.patch
  (+) OK   ACPI-PM/5-13-ACPI-PM-Introduce-function-for-refcounting-device-power-resources.patch
  (+) OK   ACPI-PM/6-13-ACPI-PM-Introduce-__acpi_bus_get_power.patch
  (+) OK   ACPI-PM/7-13-ACPI-PM-Add-function-for-device-power-state-initialization.patch
  (+) OK   ACPI-PM/8-13-ACPI-PM-Add-function-for-updating-device-power-state-consistently.patch
  (+) OK   ACPI-PM/9-13-ACPI-PM-Register-acpi_power_driver-early.patch
  (+) OK   ACPI-PM/10-13-ACPI-PM-Register-power-resource-devices-as-soon-as-they-are-needed.patch
  (+) OK   ACPI-PM/11-13-ACPI-Fan-Rework-the-handling-of-power-resources.patch
  (+) OK   ACPI-PM/12-13-ACPI-PM-Drop-acpi_bus_get_power.patch
  (+) OK   ACPI-PM/13-13-ACPI-PM-Drop-acpi_power_nocheck.patch
  (+) OK   ACPI-PM-fix/Platform-x86-Make-fujitsu_laptop-use-acpi_bus_update_power.patch

# modinfo fujitsu-laptop
filename:
/lib/modules/2.6.37-rc3-686/kernel/drivers/platform/x86/fujitsu-laptop.ko
alias:          dmi:*:svnFUJITSU:*:pvr:rvnFUJITSU:rnFJNB19C:*:cvrS7020:*
alias:          dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1E6:*:cvrS6420:*
alias:          dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1D3:*:cvrS6410:*
license:        GPL
version:        0.6.0
description:    Fujitsu laptop extras support
author:         Jonathan Woithe, Peter Gruber, Tony Vroon
srcversion:     FFA7AB6B6C940453C0946B4
alias:          acpi*:FUJ02E3:*
alias:          pnp:dFUJ02E3*
alias:          acpi*:FUJ02B1:*
alias:          pnp:dFUJ02B1*
alias:          acpi*:FUJ02BF:*
alias:          pnp:dFUJ02bf*
depends:
vermagic:       2.6.37-rc3-686 SMP mod_unload modversions 686
parm:           use_alt_lcd_levels:Use alternative interface for
lcd_levels (needed for Lifebook s6410). (uint)
parm:           disable_brightness_adjust:Disable brightness adjustment . (uint)

Re: [PATCH 0/13] ACPI / PM: Rework power resources management

[Rafael J. Wysocki]

On Friday, November 26, 2010, Sedat Dilek wrote:
> On Thu, Nov 25, 2010 at 9:45 PM, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> > On Thursday, November 25, 2010, Sedat Dilek wrote:
> >> On Thu, Nov 25, 2010 at 9:29 PM, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >> > On Thursday, November 25, 2010, Rafael J. Wysocki wrote:
> >> >> On Thursday, November 25, 2010, Sedat Dilek wrote:
> >> >> > On Thu, Nov 25, 2010 at 10:41 AM, Sedat Dilek
> >> >> > <sedat.dilek@googlemail.com> wrote:
> >> >> > > On Thu, Nov 25, 2010 at 10:11 AM, Sedat Dilek
> >> >> > > <sedat.dilek@googlemail.com> wrote:
> >> >> > >> Hi Rafael,
> >> >> > >>
> >> >> > [ ... ]
> >> >> > >> # grep "error:" build_linux-next_next20101124.dileks.2.log
> >> >> > >> /home/sd/src/linux-2.6/linux-2.6.37-rc3/debian/build/source_i386_none/drivers/platform/x86/fujitsu-laptop.c:692:
> >> >> > >> error: implicit declaration of function ‘acpi_bus_get_power’
> >> >> > [ ... ]
> >> >> > >
> >> >> > > Guess this is conflicting with your patch
> >> >> > > "12-13-ACPI-PM-Drop-acpi_bus_get_power.patch".
> >> >> > >
> >> >> > > - Sedat -
> >> >> > >
> >> >> > > P.S.: Note to myself, add the following snippet for testing purposes:
> >> >> > >
> >> >> > > [ debian/config/i386/none/config.686 ]
> >> >> > > ...
> >> >> > > ##
> >> >> > > ## file: drivers/platform/x86/Kconfig
> >> >> > > ##
> >> >> > > # CONFIG_FUJITSU_LAPTOP is not set
> >> >> > > - EOT -
> >> >> > >
> >> >> >
> >> >> > Applied on top of linux-next (next-20101125) and running.
> >> >> >
> >> >> >      Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
> >> >>
> >> >> Great, thanks a lot!
> >> >>
> >> >> I should have said the patchset is on top of the current Linus' tree.
> >> >
> >> > Actually it also breaks with the current Linus' tree, but the appended patch
> >> > should fix it.
> >> >
> >> > Thanks,
> >> > Rafael
> >> >
> >> > ---
> >> > From: Rafael J. Wysocki <rjw@sisk.pl>
> >> > Subject: Platform / x86: Make fujitsu_laptop use acpi_bus_update_power()
> >> >
> >> > Use the new function acpi_bus_update_power(), which is safer than
> >> > acpi_bus_get_power(), for getting device power state in
> >> > acpi_fujitsu_add().
> >> >
> >> > Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
> >> > ---
> >> >  drivers/platform/x86/fujitsu-laptop.c |    2 +-
> >> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >> >
> >> > Index: linux-2.6/drivers/platform/x86/fujitsu-laptop.c
> >> > ===================================================================
> >> > --- linux-2.6.orig/drivers/platform/x86/fujitsu-laptop.c
> >> > +++ linux-2.6/drivers/platform/x86/fujitsu-laptop.c
> >> > @@ -689,7 +689,7 @@ static int acpi_fujitsu_add(struct acpi_
> >> >        if (error)
> >> >                goto err_free_input_dev;
> >> >
> >> > -       result = acpi_bus_get_power(fujitsu->acpi_handle, &state);
> >> > +       result = acpi_bus_update_power(fujitsu->acpi_handle, &state);
> >> >        if (result) {
> >> >                printk(KERN_ERR "Error reading power state\n");
> >> >                goto err_unregister_input_dev;
> >> >
> >>
> >> Sorry, I crapped my own quotes.
> >> Missed to catch line #860?
> >
> > Indeed, sorry.  Updated patch is appended.
> >
> > Rafael
> >
> >
> > ---
> > From: Rafael J. Wysocki <rjw@sisk.pl>
> > Subject: Platform / x86: Make fujitsu_laptop use acpi_bus_update_power()
> >
> > Use the new function acpi_bus_update_power(), which is safer than
> > acpi_bus_get_power(), for getting device power state in
> > acpi_fujitsu_add().
> >
> > Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
> > ---
> >  drivers/platform/x86/fujitsu-laptop.c |    4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > Index: linux-2.6/drivers/platform/x86/fujitsu-laptop.c
> > ===================================================================
> > --- linux-2.6.orig/drivers/platform/x86/fujitsu-laptop.c
> > +++ linux-2.6/drivers/platform/x86/fujitsu-laptop.c
> > @@ -689,7 +689,7 @@ static int acpi_fujitsu_add(struct acpi_
> >        if (error)
> >                goto err_free_input_dev;
> >
> > -       result = acpi_bus_get_power(fujitsu->acpi_handle, &state);
> > +       result = acpi_bus_update_power(fujitsu->acpi_handle, &state);
> >        if (result) {
> >                printk(KERN_ERR "Error reading power state\n");
> >                goto err_unregister_input_dev;
> > @@ -857,7 +857,7 @@ static int acpi_fujitsu_hotkey_add(struc
> >        if (error)
> >                goto err_free_input_dev;
> >
> > -       result = acpi_bus_get_power(fujitsu_hotkey->acpi_handle, &state);
> > +       result = acpi_bus_update_power(fujitsu_hotkey->acpi_handle, &state);
> >        if (result) {
> >                printk(KERN_ERR "Error reading power state\n");
> >                goto err_unregister_input_dev;
> >
> 
> Feel free to add for
> "Platform-x86-Make-fujitsu_laptop-use-acpi_bus_update_power.patch":
> 
>      Reported-and-Tested-by: Sedat Dilek <sedat.dilek@gmail.com>

Thanks for testing!

Rafael

Re: [PATCH 0/13] ACPI / PM: Rework power resources management

[Sedat Dilek]

Hi Rafael,

nice to see your patchset is in linux-next (next-20101213) now.
More precisely in linux-acpi-2.6: 1/13 + 2/13 in release and rest/13
in test GIT branch.

What about the fix
"Platform-x86-Make-fujitsu_laptop-use-acpi_bus_update_power.patch"
[1]?
Will this go over platform-x86/linux-next into linux-next GIT tree?
Are you co-ordinating this with mjg?

Regards,
- Sedat -

[1] https://patchwork.kernel.org/patch/357422/
[2] http://git.kernel.org/?p=linux/kernel/git/mjg59/platform-drivers-x86.git;a=shortlog;h=refs/heads/linux-next

Re: [PATCH 0/13] ACPI / PM: Rework power resources management

[Sedat Dilek]

On Mon, Dec 13, 2010 at 4:43 PM, Sedat Dilek <sedat.dilek@googlemail.com> wrote:
> Hi Rafael,
>
> nice to see your patchset is in linux-next (next-20101213) now.
> More precisely in linux-acpi-2.6: 1/13 + 2/13 in release and rest/13
> in test GIT branch.
>
> What about the fix
> "Platform-x86-Make-fujitsu_laptop-use-acpi_bus_update_power.patch"
> [1]?
> Will this go over platform-x86/linux-next into linux-next GIT tree?
> Are you co-ordinating this with mjg?
>
> Regards,
> - Sedat -
>
> [1] https://patchwork.kernel.org/patch/357422/
> [2] http://git.kernel.org/?p=linux/kernel/git/mjg59/platform-drivers-x86.git;a=shortlog;h=refs/heads/linux-next
>

Thanks, the patch is now included in linux-next (next-20101214) (see [1]).

- Sedat -

[1] http://git.kernel.org/?p=linux/kernel/git/lenb/linux-acpi-2.6.git;a=commit;h=5fd12c41e206d6bfda6eef1ed50e995a293e0777