Re: [PATCH 4/5] Centralise NO_IRQ definition

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Mon, 2005-11-21 at 22:20 +0000, Alan Cox wrote:
> > Yes, G5 powermacs have the SATA controller on irq 0.  So if we can't
> > use irq 0, I can't get to my hard disk. :)  Other powermacs also use
> > irq 0 for various things, as do embedded PPC machines.
> 
> G5 powermacs have the SATA controller on physical IRQ value 0. Linux IRQ
> values don't need to exactly map. One of the x86 ports handles 'real IRQ
> 0' exactly this way. Its a cookie. Sure would benefit from a function
> for turning an IRQ into a description as a cleanup.

Remapping in that way sounds like a half-arsed hack to work around the
problem which Matthew is trying to fix properly by using NO_IRQ == -1.

Yes, there are drivers which are currently broken and assume irq 0 is
'no irq'. They are broken. Let's just fix them and not continue the
brain-damage.

-- 
dwmw2


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux