From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Peter Korsgaard <jacmet@sunsite.dk>
Cc: linux-kernel@vger.kernel.org
Subject: Re: serial/8250: Platform override of is_real_interrupt
Date: Wed, 29 Mar 2006 15:12:53 +0100 [thread overview]
Message-ID: <1143641573.17522.51.camel@localhost.localdomain> (raw)
In-Reply-To: <8764lxphh8.fsf@sleipner.barco.com>
On Mer, 2006-03-29 at 14:23 +0200, Peter Korsgaard wrote:
> is_real_interrupt() unfortunately interpretes IRQ0 as meaning no
> interrupt, so performance is kinda crap.
This was discussed some time ago and the answer is "none of the below"
http://lkml.org/lkml/2005/11/21/211
Your hardware platform should be mapping interrupts so that the cookie
dev->irq is not 0 for a valid IRQ.
Alan
next prev parent reply other threads:[~2006-03-29 14:05 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-29 12:23 Peter Korsgaard
2006-03-29 14:12 ` Alan Cox [this message]
2006-03-30 6:42 ` Peter Korsgaard
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