linux-kernel - Re: [PATCH] fix return value of i8042_aux_test

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Message-ID: <20070726151042.0ae34e0e@the-village.bc.nu>
Date:	Thu, 26 Jul 2007 15:10:42 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	"Dmitry Torokhov" <dmitry.torokhov@...il.com>
Cc:	"Fernando Luis Vázquez Cao" <fernando@....ntt.co.jp>,
	linux-kernel@...r.kernel.org, vojtech@...e.cz,
	akpm@...ux-foundation.org
Subject: Re: [PATCH] fix return value of i8042_aux_test_irq

> The handler does handle the interrupt - both status and data registers
> are read so from the keyboard controller point of view the interrupt
> has been handled even if we happen to discard the data. As far as I
> know IRQ12 is never shared by BIOS... Vojtech, do you remember why we
> request IRQ12 with IRQF_SHARED?

A small number of boxes do share IRQ12 and it was switched to shared for
them. 

The debug check is an *aid* not a definitive proof of a problem
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