From mboxrd@z Thu Jan  1 00:00:00 1970
From: Michael Schwingen <rincewind@discworld.dascon.de>
Date: Wed, 20 May 2009 14:40:12 +0200
Subject: [ath9k-devel] PCI IRQ Pins
In-Reply-To: <4A13EC76.3020206@hiramoto.org>
References: <4A13EC76.3020206@hiramoto.org>
Message-ID: <4A13FA2C.6050204@discworld.dascon.de>
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To: ath9k-devel@lists.ath9k.org

Karl Hiramoto wrote:
> Hi,
>
> I'm using wireless testing with a mini-pci AR5416 on an arm xscale 
> ixp4xx.  It seems the IRQ always comes on IRQ Pin A.     Is there a way 
> to force the atheros AR5416 to use Pin B of the mini-pci?  I don't have 
> access to a AR5416 datasheet to actually know if the chip has more than 
> one IRQ line.  I'm not sure if this is possible to do in PCI or the 
> kernel either.
>   
The PCI standard mandates that a single-function device only use IRQ A.
> This Pin A line is shared with a IDE htp371N chip which only has one IRQ 
> line.  Sometimes (randomly) during boot i get the "IRQ X  Nobody cared" 
> message.   This usually happens right when the BLK_DEV_HPT366  or  ath9k 
> driver is loaded.
>   
Either find the cause and fix the drivers, or re-wire the pins on the 
mainboard to use separate IRQ lines for IRQA on the affected sockets.

cu
Michael