linuxaudio.org

Device IRQs might be set is in the actual hardware itself. The

manufacturer might have hardwired that device (such as a USB or Firewire

controller) to a particular hardware IRQ line.
Device itself might be designed to require a particular IRQ. Don't know

if that's true anymore, used to be in the days of the E/ISA buses.
I don't think software can do anything about those situations.
BIOS might have option to change IRQs.
Diego Simak wrote:

quoted text
> Yes, that page is for set the priorities of IRQ handlers, not the IRQ to

> a certain device.

>

> If you find how to do that let us know.

> Thank you!

> Diego

>

> 2011/9/8 andy baxter

>

>     On 08/09/11 11:49, Diego Simak wrote:

>

>         http://subversion.ffado.org/ wiki/IrqPriorities

>

>

>

>     That link is good for setting the priorities of irq handlers, but

>     doesn't tell you how to move a device to a different irq, which is

>     what I'd really like.

>

>     I just had another look at the onboard firmware config system, and

>     it does have a page that lets you assign devices labelled A,B,C...

>     to different physical interrupts, but I'm not sure how to use this

>     properly or safely. (There's no indication what device 'A' actually

>     is). By default they are all set to INT 11, which doesn't come up in

>     /proc/interrupts.

>

>     andy

>

>

>         2011/9/8 Atte André Jensen

>         >>

>

>

>            On 09/08/2011 11:15 AM, andy baxter wrote:

>

>                If you work out how to change it, please let me know, as it

>                annoys me too!

>

>

>            Sure!

>

>            I've been using stock kernels for a while now, but is it true

>         that

>            this is only relevant when running a rt-patched kernel *and*

>            setting up rt-priorities for IRQ's?

>

>            In any case, where do I find a quick (re-)intro to how to

>         tune the

>            IRQ's?

--

David

gnome@hawaii.rr.com

authenticity, honesty, community

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