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Subject: Re: unexpected irq 71 on ip32
From:	Giuseppe Sacco <giuseppe@eppesuigoccas.homedns.org>
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Date:	Mon, 17 Mar 2008 11:07:20 +0100
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Hi Thomas,

Il giorno lun, 17/03/2008 alle 11.01 +0100, Thomas Bogendoerfer ha
scritto:
> On Mon, Mar 17, 2008 at 10:41:44AM +0100, Giuseppe Sacco wrote:
> > from what I understand, this is an irq related to serial line ttyS1. On

my understanding is due to:

$ grep 71 arch/mips/sgi-ip32/*irq*
arch/mips/sgi-ip32/ip32-irq.c: * 26-31 -> 66-71 Serial 2 (28 E)

> not on my O2:
> 
> serial8250.0: ttyS0 at MMIO 0x1f390000 (irq = 60) is a 16550A
> console [ttyS0] enabled
> serial8250.0: ttyS1 at MMIO 0x1f398000 (irq = 66) is a 16550A
> 
> Is there something listed for irq 71 in /proc/interrupts ?

nope:
giuseppe@sgi:~$ cat /proc/interrupts 
           CPU0       
  7:    1949649            MIPS  timer
 11:     106073       IP32 MACE  SGI O2 Fast Ethernet
 15:          0       IP32 MACE  MACE PCI error
 16:     487646   IP32 MACE PCI  aic7xxx
 17:         15   IP32 MACE PCI  aic7xxx
 18:          0   IP32 MACE PCI  ohci_hcd:usb1
 21:          0   IP32 MACE PCI  ohci_hcd:usb2
 22:      62066   IP32 MACE PCI  ehci_hcd:usb3, eth100
 28:          0      IP32 CRIME  CRIME CPU error
 29:          1      IP32 CRIME  CRIME memory error
 48:          0   IP32 MACE ISA  rtc
 49:         10   IP32 MACE ISA  PS2 port
 51:        133   IP32 MACE ISA  PS2 port
 60:        133   IP32 MACE ISA  serial

ERR:          0

Bye,
Giuseppe