[lm-sensors] ERROR: could not insert 'w83627ehf': Device or resource busy

[lm-sensors] ERROR: could not insert 'w83627ehf': Device or resource busy

[David Kremer]

Hello, the problem is what is stated in the topic of this mail.

I try to load w83627ehf and the system complains that the device or the 
resource is busy.

Any idea of how to fix this ?

Thank you very much.



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Re: [lm-sensors] ERROR: could not insert 'w83627ehf': Device or resource busy

[Guenter Roeck]

On Wed, Mar 14, 2012 at 09:44:10AM -0400, David Kremer wrote:
> Hello, the problem is what is stated in the topic of this mail.
> 
> I try to load w83627ehf and the system complains that the device or the 
> resource is busy.
> 
> Any idea of how to fix this ?
> 
Most likely

http://www.lm-sensors.org/wiki/FAQ/Chapter3#Mysensorshavestoppedworkinginkernel2.6.31

-- 
Guenter Roeck
Distinguished Engineer
PDU IP Systems

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Re: [lm-sensors] ERROR: could not insert 'w83627ehf': Device or resource busy

[David Kremer]

On 14/03/2012 14:55, Guenter Roeck wrote:
> Most likely
>
> http://www.lm-sensors.org/wiki/FAQ/Chapter3#Mysensorshavestoppedworkinginkernel2.6.31
>
Thank you guenter.

However, there is no clear explanation of how to fix this.

Indeed, I load the linux module asus_atk0110 and ran again sensors-detect.

The script ended up saying that the following modules was needed :

Driver `w83627ehf':
   * ISA bus, address 0x290
     Chip `Nuvoton NCT6776F Super IO Sensors' (confidence: 9)

Driver `coretemp':
   * Chip `Intel digital thermal sensor' (confidence: 9)

However, there is still no way to load w83627ehf as I read your link.

What do you think of this ?

David

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Re: [lm-sensors] ERROR: could not insert 'w83627ehf': Device or resource busy

[Guenter Roeck]

On Wed, 2012-03-14 at 10:23 -0400, David Kremer wrote:
> On 14/03/2012 14:55, Guenter Roeck wrote:
> > Most likely
> >
> > http://www.lm-sensors.org/wiki/FAQ/Chapter3#Mysensorshavestoppedworkinginkernel2.6.31
> >
> Thank you guenter.
> 
> However, there is no clear explanation of how to fix this.
> 
> Indeed, I load the linux module asus_atk0110 and ran again sensors-detect.
> 
Hi David,

Question is not what happens if you ran sensors-detect again; that is
not the point and has nothing to do with the ability to load the module
or not. 

Question is what you get when running the "sensors" command after
loading the asus_atk0110 module.

> The script ended up saying that the following modules was needed :
> 
> Driver `w83627ehf':
>    * ISA bus, address 0x290
>      Chip `Nuvoton NCT6776F Super IO Sensors' (confidence: 9)
> 
> Driver `coretemp':
>    * Chip `Intel digital thermal sensor' (confidence: 9)
> 
> However, there is still no way to load w83627ehf as I read your link.
> 
Did you get the acpi error message as described ?

If so, the link does provide the answer:

"If you want to restore the old behaviour (which might be dangerous)
add: "acpi_enforce_resources=lax" to the kernel cmdline when booting (or
add it in grub.conf to make this permanent)."

Just remember the "which might be dangerous". You might be better off
with asus_atk0100 if it works for you.

Guenter



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Re: [lm-sensors] ERROR: could not insert 'w83627ehf': Device or resource busy

[David Kremer]

On 14/03/2012 16:23, Guenter Roeck wrote:
> On Wed, 2012-03-14 at 10:23 -0400, David Kremer wrote:
>> On 14/03/2012 14:55, Guenter Roeck wrote:
>>> Most likely
>>>
>>> http://www.lm-sensors.org/wiki/FAQ/Chapter3#Mysensorshavestoppedworkinginkernel2.6.31
>>>
>> Thank you guenter.
>>
>> However, there is no clear explanation of how to fix this.
>>
>> Indeed, I load the linux module asus_atk0110 and ran again sensors-detect.
>>
> Hi David,
>
> Question is not what happens if you ran sensors-detect again; that is
> not the point and has nothing to do with the ability to load the module
> or not.
>
> Question is what you get when running the "sensors" command after
> loading the asus_atk0110 module.
>
>> The script ended up saying that the following modules was needed :
>>
>> Driver `w83627ehf':
>>     * ISA bus, address 0x290
>>       Chip `Nuvoton NCT6776F Super IO Sensors' (confidence: 9)
>>
>> Driver `coretemp':
>>     * Chip `Intel digital thermal sensor' (confidence: 9)
>>
>> However, there is still no way to load w83627ehf as I read your link.
>>
> Did you get the acpi error message as described ?
>
> If so, the link does provide the answer:
>
> "If you want to restore the old behaviour (which might be dangerous)
> add: "acpi_enforce_resources=lax" to the kernel cmdline when booting (or
> add it in grub.conf to make this permanent)."
>
> Just remember the "which might be dangerous". You might be better off
> with asus_atk0100 if it works for you.
>
> Guenter
>
>
>
I loaded the asus_atk0110 module into the kernel :

$ lsmod |grep atk
asus_atk0110           10131  0

However the interface is still using the coretemp linux module, so the 
pwm config says me :

/usr/sbin/pwmconfig: There are no pwm-capable sensor modules installed

I guess the only way to have my fancontrol working properly is to 
enforce the old way with the kernel command line.

How do you plan to fix the situation in future releases ?



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Re: [lm-sensors] ERROR: could not insert 'w83627ehf': Device or resource busy

[David Kremer]

I forgot to mention that your diagnostic is excellent.

The three last lines from dmesg are here :

[30023.283848] w83627ehf: Found NCT6776F chip at 0x290
[30023.283867] ACPI: resource w83627ehf [io  0x0295-0x0296] conflicts 
with ACPI region HWRE [io 0x290-0x299]
[30023.283869] ACPI: If an ACPI driver is available for this device, you 
should use it instead of the native driver


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Re: [lm-sensors] ERROR: could not insert 'w83627ehf': Device or resource busy

[Guenter Roeck]

On Wed, 2012-03-14 at 11:36 -0400, David Kremer wrote:
> I forgot to mention that your diagnostic is excellent.
> 
> The three last lines from dmesg are here :
> 
> [30023.283848] w83627ehf: Found NCT6776F chip at 0x290
> [30023.283867] ACPI: resource w83627ehf [io  0x0295-0x0296] conflicts 
> with ACPI region HWRE [io 0x290-0x299]
> [30023.283869] ACPI: If an ACPI driver is available for this device, you 
> should use it instead of the native driver

Not really ... we see this about once per week ;).

Guenter



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Re: [lm-sensors] ERROR: could not insert 'w83627ehf': Device or resource busy

[Guenter Roeck]

On Wed, 2012-03-14 at 11:32 -0400, David Kremer wrote:
> On 14/03/2012 16:23, Guenter Roeck wrote:
> > On Wed, 2012-03-14 at 10:23 -0400, David Kremer wrote:
> >> On 14/03/2012 14:55, Guenter Roeck wrote:
> >>> Most likely
> >>>
> >>> http://www.lm-sensors.org/wiki/FAQ/Chapter3#Mysensorshavestoppedworkinginkernel2.6.31
> >>>
> >> Thank you guenter.
> >>
> >> However, there is no clear explanation of how to fix this.
> >>
> >> Indeed, I load the linux module asus_atk0110 and ran again sensors-detect.
> >>
> > Hi David,
> >
> > Question is not what happens if you ran sensors-detect again; that is
> > not the point and has nothing to do with the ability to load the module
> > or not.
> >
> > Question is what you get when running the "sensors" command after
> > loading the asus_atk0110 module.
> >
> >> The script ended up saying that the following modules was needed :
> >>
> >> Driver `w83627ehf':
> >>     * ISA bus, address 0x290
> >>       Chip `Nuvoton NCT6776F Super IO Sensors' (confidence: 9)
> >>
> >> Driver `coretemp':
> >>     * Chip `Intel digital thermal sensor' (confidence: 9)
> >>
> >> However, there is still no way to load w83627ehf as I read your link.
> >>
> > Did you get the acpi error message as described ?
> >
> > If so, the link does provide the answer:
> >
> > "If you want to restore the old behaviour (which might be dangerous)
> > add: "acpi_enforce_resources=lax" to the kernel cmdline when booting (or
> > add it in grub.conf to make this permanent)."
> >
> > Just remember the "which might be dangerous". You might be better off
> > with asus_atk0100 if it works for you.
> >
> > Guenter
> >
> >
> >
> I loaded the asus_atk0110 module into the kernel :
> 
> $ lsmod |grep atk
> asus_atk0110           10131  0
> 
> However the interface is still using the coretemp linux module, so the 
> pwm config says me :
> 

David,

coretemp doesn't have anything to do with w83627ehf or asus_atk0110,
except that all are hwmon drivers. You are complaining that the
headlights of your car still work even after you tried to replace the
tail break lights.

> /usr/sbin/pwmconfig: There are no pwm-capable sensor modules installed
> 
> I guess the only way to have my fancontrol working properly is to 
> enforce the old way with the kernel command line.
> 
> How do you plan to fix the situation in future releases ?
> 
First question is if the asus_atk0110 module detects your board. You
would see that with the "sensors" command, not with pwmconfig (the asus
driver does not support manual fan control, so pwmconfig will not work).

Second question is if you actually _need_ manual fan control. The
automatic fan control implemented in NCT6776F is pretty good, and it
should be enabled by default. Do you have any problems with it ?

If you do have problems with automatic fan control, the only remedy I
can see would be for someone to implement manual fan control in
asus_atk0110. Not sure if that is even possible, though.

Guenter



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Re: [lm-sensors] ERROR: could not insert 'w83627ehf': Device or resource busy

[David Kremer]

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Re: [lm-sensors] ERROR: could not insert 'w83627ehf': Device or resource busy

[Guenter Roeck]

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Re: [lm-sensors] ERROR: could not insert 'w83627ehf': Device or resource busy

[David Kremer]

[-- Attachment #1: Type: text/plain, Size: 678 bytes --]


> The NCT chip supports it, and it works pretty well on my system (with
> NCT6775F). It is enabled if pwmX_enable is set to 5 after you
> force-loaded the w83627ehf module.
>
> I am working on an enhanced version of the nct6775/nct6776 driver which
> will let you configure automatic fan control. It is on github, so you
> could give it a try if you like (https://github.com/groeck/nct6775).
>
> Guenter
>
Thank you Guenter.

I slightly modified your makefile to make it suits the
archlinux installation.

See the attached patch.

Can you tell me if it's correct ?
<http://www.federationyoga.qc.ca/page-respiration.html>
<http://www.federationyoga.qc.ca/page-respiration.html>

[-- Attachment #2: patch-makefile.p0 --]
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diff --git a/Makefile b/Makefile
index f0f3bd5..8381f25 100644
--- a/Makefile
+++ b/Makefile
@@ -1,14 +1,14 @@
 # For building for the current running version of Linux
 TARGET		:= $(shell uname -r)
-HOME=$(shell pwd)
+HOME            := $(shell pwd)
 # Or for a specific version
 #TARGET		:= 2.6.33.5
 KERNEL_MODULES	:= /lib/modules/$(TARGET)
 # KERNEL_BUILD	:= $(KERNEL_MODULES)/build
-KERNEL_BUILD	:= /usr/src/linux-headers-$(TARGET)
+KERNEL_BUILD	:= /usr/src/linux-$(TARGET)
 
 #SYSTEM_MAP	:= $(KERNEL_BUILD)/System.map
-SYSTEM_MAP	:= /boot/System.map-$(TARGET)
+SYSTEM_MAP	:= /lib/modules/$(TARGET)/build/Module.symvers
 
 DRIVER := nct6775
 
@@ -33,4 +33,4 @@ install: modules_install
 
 modules_install:
 	cp $(DRIVER).ko $(KERNEL_MODULES)/kernel/$(MOD_SUBDIR)
-	depmod -a -F $(SYSTEM_MAP) $(TARGET)
+	depmod -a -E $(SYSTEM_MAP) $(TARGET)

[-- Attachment #3: Type: text/plain, Size: 153 bytes --]

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Re: [lm-sensors] ERROR: could not insert 'w83627ehf': Device or resource busy

[David Kremer]

Guenter, I tested your module with the makefile I sent you.

Here is the result. I can't still load your module into my kernel.

  [42029.144832] nct6775: Found NCT6776F chip at 0x290
  [42029.144852] ACPI: resource nct6775 [io 0x0295-0x0296] conflicts 
with ACPI region HWRE [io 0x290-0x299]
  [42029.144853] ACPI: If an ACPI driver is available for this device, 
you should use it instead of the native driver

Tell me if you see something else than to force ACPI.

Do you suggest to try with a newer version of the kernel ? Mine is 
3.0.23-1-lts.
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Re: [lm-sensors] ERROR: could not insert 'w83627ehf': Device or resource busy

[Guenter Roeck]

On Wed, 2012-03-14 at 15:01 -0400, David Kremer wrote:
> Guenter, I tested your module with the makefile I sent you.
> 
> Here is the result. I can't still load your module into my kernel.
> 
>   [42029.144832] nct6775: Found NCT6776F chip at 0x290
>   [42029.144852] ACPI: resource nct6775 [io 0x0295-0x0296] conflicts 
> with ACPI region HWRE [io 0x290-0x299]
>   [42029.144853] ACPI: If an ACPI driver is available for this device, 
> you should use it instead of the native driver
> 
> Tell me if you see something else than to force ACPI.

David,

that driver will (and can) not solve the acpi resource problem, so you
will still have to force-load it. It can only help with automatic fan
control (which, after being configured, runs automatically in the NCT
chip).

The problem with acpi vs. driver access is that there is no
synchronization between acpi accesses (through the bios) and linux
driver accesses. If both are active, there are potential access
conflicts, with unpredictable results. There is really nothing we can do
about that.

Guenter



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Re: [lm-sensors] ERROR: could not insert 'w83627ehf': Device or resource busy

[David Kremer]

Thank you Guenter. I read your driver's README and I would like to thank 
you for that work.

What I wonder is, if there is actually an automatic mode and a 
temperature range that could be defined for the NCT6776F to stay in (so 
called "cruiser mode"), why this is not accessible from whithin the BIOS 
setting ?

David

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Re: [lm-sensors] ERROR: could not insert 'w83627ehf': Device or resource busy

[Guenter Roeck]

On Wed, Mar 14, 2012 at 04:57:51PM -0400, David Kremer wrote:
> Thank you Guenter. I read your driver's README and I would like to thank 
> you for that work.
> 
> What I wonder is, if there is actually an automatic mode and a 
> temperature range that could be defined for the NCT6776F to stay in (so 
> called "cruiser mode"), why this is not accessible from whithin the BIOS 
> setting ?
> 
David,

that is really a question to ask the board vendor. NCT6776F actually has several
automatic modes - thermal cruise mode, fan speed cruise mode, and SmartFan IV mode.
In SmartFan IV mode, one can also enable an additional "weight" mode, in which
fan speed is controlled by two temperatures. This is configured on my Intel board
and works quite well. That mode can be configured with the various "weight" attributes
in the latest version of the nct6775 driver.

Guenter

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