Re: PCI IRQ's under 1.2.13

Wolfgang Jung (woju@keep.in-berlin.de)
Thu, 17 Aug 1995 20:36:34 +0200 (MET DST)

#
#Not for on my machine. The PCI video card use interrupt 10.
#This interrupt was not being registered in /proc/interrupts
#I had a ISA 3c509 on 10 that did not work until I noticed the VGA on 10
#on /proc/pci and changed it.
#
#Aleph One / aleph1@dfw.net
#http://underground.org/
#
#On Wed, 16 Aug 1995, Werner Fink wrote:
#
#> Date: Wed, 16 Aug 1995 21:43:51 +0200
#> From: Werner Fink <werner@suse.de>
#> To: aleph1@dfw.net
#> Cc: linux-kernel@vger.rutgers.edu
#> Subject: Re: PCI IRQ's under 1.2.13
#>
#>
#> IRQ's are not INT's....
#>
#> Werner
#>
#> PS: The IRQ of the hostadapter is reported by /proc/interrupts.
#>

I noticed the IRQ gets reported only if it gets used.
On one of my machines here one of the serial ports (which runs on IRQ
4) is not used and therefor does not report its interupts into
/proc/interupts until the port is opened and used.
Since most drivers use dynamic irq allocation (ie irq gets allocated
on either first use or each open).

Gruss
Wolfgang