Re: [nwst-dev] Audio on the NS1000 locks (help)

[Jochen R. <jo...@pa...>]

> 
> I have traced the problem when issuing this line:
> 
> modprobe cs4232 io=0x830 irq=10 dma=0 dma2=1
> 
> till this line of code:
> 
> if (request_irq(devc->irq, adintr, 0, devc->name, (void *)my_dev) < 0)
>
> It doesn't come back from the request_irq call, as it starts executing
> adintr again and again in a loop without stopping.
>

Perhaps the interrupt controller is configured for level-sensitive (PCI)
interrupt on irq 10, instead of edge-triggered (ISA).

In arch/ppc/kernel/prep_pci.c, change line 962:

                        irq_edge_mask_hi = 0xA4; /* irq's 10, 13, 15 level-triggered */

to this:

#ifdef CONFIG_NS1000
                        irq_edge_mask_hi = 0xA0; /* irq's 13, 15 level-triggered */
#else
                        irq_edge_mask_hi = 0xA4; /* irq's 10, 13, 15 level-triggered */
#endif

Hope this works.

I will try to put in a dynamic detection for the NS1000 at some point to avoid all
the #ifdef stuff.

Jochen