Re: [PATCH] Register PCI host bridge resource earlier

[Sergei Shtylyov <sshtylyov@ru.mvista.com>]

Hello.

Thomas Bogendoerfer wrote:

>>   I'm just not seeing how using insert_resource() vs request_resource() 
>>   for i8259 ports can be relevant here.

> request_resource will fail, because the range is already taken by
> sni_io_resource, while insert_region inserts the resource into 
> sni_io_resource.

    No, it shouldn't according to what I'm seeing in the code.  Perhaps I'm 
missing something and need to actually try executing alike code a see...

> The problem is that init_i8259 doesn't have the right
> resource for doing the request_resource, if ioport_resource starting from
> 0x0000 is already taken by a PCI host bridge.

    I'm not at all sure that giving out I/O addresses from 0 to PCI is a great 
idea -- is it indeed necessary?

> I could probably write a
> patch, which adds a parameter to init_i8259 for the resource, where the
> request_resource is correct. No idea, whether this is worth the efford.

> Opions ?

    Did you mean options, opinions, or something else? :-)

> Thomas.

WBR, Sergei