Compiling ALSA with 2.5.7

Compiling ALSA with 2.5.7

[Downing, Thomas]

I am unable to build ALSA for 2.5.7 either as a module or 
built in to kernel.

The problem is that ALSA code uses a function virt_to_bus( ).
This is #defined as virt_to_bus_not_defined_use_pci_map( ).
So there is an unresolved external.

The switch from virt_to_bus( ) to pci_map_*( ) is not obvious.

Am I missing something?  I think I must be.  So , is there
a kernel config option that needs to be set/unset, or is there
a patch I should get?

BTW I tried building 2.5.8, but that failed spectacularly in other
areas not related to ALSA...  Hmmmm, I've never had kernel build
problems before, I must be regressing!

thanks
td

Compiling ALSA with 2.5.7

[Downing, Thomas]

If this is off-topic, my apologies.

I am unable to build ALSA for 2.5.7 on i386.  The problem is that 
the ALSA code uses a function virt_to_bus( ). This is #defined in 
asm/io.h as virt_to_bus_not_defined_use_pci_map( ). So there is 
an unresolved external.

The correct replacement of virt_to_bus( ) to pci_map_*( ) is not 
obvious to a newbie from a look at pci.h.

Am I missing something?  I think I must be.  So , is there
a kernel config option that needs to be set/unset, or is there
a patch I should get?

BTW I tried building 2.5.8, but that failed spectacularly in other
areas not related to ALSA...  Hmmmm, I've never had kernel build
problems before, I must be regressing!

thanks
td

Re: Compiling ALSA with 2.5.7

[Takashi Iwai]

At Tue, 16 Apr 2002 11:35:17 -0400,
Downing, Thomas <Thomas.Downing@ipc.com> wrote:
> 
> If this is off-topic, my apologies.
> 
> I am unable to build ALSA for 2.5.7 on i386.  The problem is that 
> the ALSA code uses a function virt_to_bus( ). This is #defined in 
> asm/io.h as virt_to_bus_not_defined_use_pci_map( ). So there is 
> an unresolved external.
 
is include/asm correctly symlinked to asm-i386?

all ALSA drivers (except for rme9652-mem and ppc ones) don't use
virt_to_bus() any more.


Takashi

Re: Compiling ALSA with 2.5.7

[Alan Cox]

> The correct replacement of virt_to_bus( ) to pci_map_*( ) is not 
> obvious to a newbie from a look at pci.h.

Have a look at the DMA-Mapping.txt documentation file. Its not a trivial
replacement but its maybe one to have a go at. 

Alan

Re: Compiling ALSA with 2.5.7

[Joern Nettingsmeier]

"Downing, Thomas" wrote:
> 
> I am unable to build ALSA for 2.5.7 either as a module or
> built in to kernel.
> 
> The problem is that ALSA code uses a function virt_to_bus( ).
> This is #defined as virt_to_bus_not_defined_use_pci_map( ).
> So there is an unresolved external.
> 
> The switch from virt_to_bus( ) to pci_map_*( ) is not obvious.
> 
> Am I missing something?  I think I must be.  So , is there
> a kernel config option that needs to be set/unset, or is there
> a patch I should get?
> 
> BTW I tried building 2.5.8, but that failed spectacularly in other
> areas not related to ALSA...  Hmmmm, I've never had kernel build
> problems before, I must be regressing!

i think while you're at it, you should get a more recent kernel, and
be sure to grab the latest alsa packages (0.9.0beta12 at the time of
this writing).
don't go for 0.5.0, they are totally deprecated, even though the web
site still classifies it as the "stable" version.

2.4.19-pre plus latest alsa compiles fine for me.

if you have further problems with alsa, you should join the alsa
user list at alsa-project.org
linux-sound is a OSS list, and there's probably nobody who can
really help you here....

in case you're interested in getting involved in linux audio a
little more, i'd like to invite you to the linux-audio-{user|dev}
lists at http://www.linuxdj.com/audio/lad/

best,

jörn



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