From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Adam Litke <agl@us.ibm.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Determining pci bus from irq
Date: Tue, 09 Sep 2003 18:09:41 +0100 [thread overview]
Message-ID: <1063127380.30397.69.camel@dhcp23.swansea.linux.org.uk> (raw)
In-Reply-To: <1063123832.2037.40.camel@dyn318261bld.beaverton.ibm.com>
On Maw, 2003-09-09 at 17:10, Adam Litke wrote:
> Is there a nice way to determine, given an irq number, the pci bus
> number that raised the interrupt?
In general the answer is you can't find out. PCI IRQ lines are shared.
You can certainly lock and walk the pci device list looking for matches
but you may get a lot of devices on different busses
next prev parent reply other threads:[~2003-09-09 17:11 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-09-09 16:10 Adam Litke
2003-09-09 17:09 ` Alan Cox [this message]
2003-09-09 17:36 ` Richard B. Johnson
2003-09-09 21:20 ` Alan Cox
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