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Re: Atari TT



On Thu, Jan 5, 2012 at 13:55, Alan Hourihane <alanh@fairlite.co.uk> wrote:
> Linux version 3.1.0-atari-00246-gbff0dc7 (root@server) (gcc version

bff0dc7 = m68k-v3.1. That kernel still has the SCC driver, but it depends on
BROKEN, so you cannot select it.
If you revert 173808aa9203cf752518acd80fde3c9c910ddd0f ("m68k/atari: SCC
- Mark Atari serial driver BROKEN") you can select CONFIG_ATARI_SCC again,
and get a real serial console.

But first the interrupt storm must be fixed.

> unexpected interrupt from 112

That's the vector number, so the actual IRQ number is 112 / 4 = 28, which is
IRQ_TT_MFP_TIMD. Sorry, no clues.

Can you please try a pristine v3.1? The only relevant differences are the
conversion to the genirq framework and the Atari SCC driver.

If that works, I guess it's a regression introduced by the genirq conversion.
Then you can bisect between v3.1 and m68k-v3.1.

BTW, in between 9fa434585e5f6cfeae685505b4cd8465dbab1dff ("m68k/irq:
Add genirq support") and 971ae31663e817a5e5b673d30c7652d9160145f0
("m68k/irq: Remove obsolete m68k irq framework"), genirq support is a config
option that can be turned on or off.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds


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