loading 'acpiphp' fails after the system boot?‏

loading 'acpiphp' fails after the system boot?‏

[Shiro Itou 伊東]

Hi All,
 
In kernel version 3.0, when ‘apciphp’ driver module is loaded, after the system comes up, it fails with error “no such device”. When I tried to debug I see that it fails in acpiphp_get_num_slots () function with error "Total 0 slots". In this case ‘bridge_list’  seem to be NULL.
 
But when the ‘acpiphp’ is loaded during boot time,  it seems to work file.
 
Where does the ‘bridge_list’ get populated and why does loading ‘apciphp’ after the system comes up fails to load.
 
Regards,
Shiro 		 	   		  

Re: loading 'acpiphp' fails after the system boot?‏

[gregkh]

On Tue, Sep 10, 2013 at 08:43:05AM -0700, Shiro Itou 伊東 wrote:
> Hi All,
>  
> In kernel version 3.0, when ‘apciphp’ driver module is loaded, after
> the system comes up, it fails with error “no such device”. When I
> tried to debug I see that it fails in acpiphp_get_num_slots ()
> function with error "Total 0 slots". In this case ‘bridge_list’  seem
> to be NULL.   
> But when the ‘acpiphp’ is loaded during boot time,  it seems to work file.

What happens in the 3.11 kernel release?  Lots of work has been done in
this area in the past 2 years, please try a newer kernel.  If there are
still problems, please let the linux-pci@vger.kernel.org mailing list
know about it.

thanks,

greg k-h
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RE: loading 'acpiphp' fails after the system boot?‏

[Shiro Itou 伊東]

----------------------------------------
> Date: Tue, 10 Sep 2013 08:51:03 -0700
> From: gregkh@linuxfoundation.org
> To: shiro.itou@outlook.com
> CC: linux-hotplug@vger.kernel.org; linux-acpi@vger.kernel.org
> Subject: Re: loading 'acpiphp' fails after the system boot?‏
>
> On Tue, Sep 10, 2013 at 08:43:05AM -0700, Shiro Itou 伊東 wrote:
>> Hi All,
>>
>> In kernel version 3.0, when ‘apciphp’ driver module is loaded, after
>> the system comes up, it fails with error “no such device”. When I
>> tried to debug I see that it fails in acpiphp_get_num_slots ()
>> function with error "Total 0 slots". In this case ‘bridge_list’ seem
>> to be NULL.
>> But when the ‘acpiphp’ is loaded during boot time, it seems to work file.
>
> What happens in the 3.11 kernel release? Lots of work has been done in
> this area in the past 2 years, please try a newer kernel. If there are
> still problems, please let the linux-pci@vger.kernel.org mailing list
> know about it.

Thank you for reply. I did not try 3.11 kernel. I will check 3.11 kernel and see. But I use 3.0 kernel as a requirement.

Thank You,
Shiro

>
> thanks,
>
> greg k-h
> --
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> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html 		 	   		  

Re: loading 'acpiphp' fails after the system boot?‏

[gregkh]

On Wed, Sep 11, 2013 at 10:46:19AM -0700, Shiro Itou 伊東 wrote:
> ----------------------------------------
> > Date: Tue, 10 Sep 2013 08:51:03 -0700
> > From: gregkh@linuxfoundation.org
> > To: shiro.itou@outlook.com
> > CC: linux-hotplug@vger.kernel.org; linux-acpi@vger.kernel.org
> > Subject: Re: loading 'acpiphp' fails after the system boot?‏
> >
> > On Tue, Sep 10, 2013 at 08:43:05AM -0700, Shiro Itou 伊東 wrote:
> >> Hi All,
> >>
> >> In kernel version 3.0, when ‘apciphp’ driver module is loaded, after
> >> the system comes up, it fails with error “no such device”. When I
> >> tried to debug I see that it fails in acpiphp_get_num_slots ()
> >> function with error "Total 0 slots". In this case ‘bridge_list’ seem
> >> to be NULL.
> >> But when the ‘acpiphp’ is loaded during boot time, it seems to work file.
> >
> > What happens in the 3.11 kernel release? Lots of work has been done in
> > this area in the past 2 years, please try a newer kernel. If there are
> > still problems, please let the linux-pci@vger.kernel.org mailing list
> > know about it.
> 
> Thank you for reply. I did not try 3.11 kernel. I will check 3.11
> kernel and see. But I use 3.0 kernel as a requirement.

Then please contact the people who is in charge of that requirement, as
they are the only ones that can support you, the community can not.

Best of luck,

greg k-h
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