linux-kernel - Re: [PATCH 1/2 take #2] libata: Support PIO polling-only hosts.

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Message-ID: <20071108105235.636accd4@the-village.bc.nu>
Date:	Thu, 8 Nov 2007 10:52:35 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Paul Mundt <lethal@...ux-sh.org>
Cc:	Jeff Garzik <jeff@...zik.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org,
	linuxsh-dev@...ts.sourceforge.net
Subject: Re: [PATCH 1/2 take #2] libata: Support PIO polling-only hosts.

On Thu, 8 Nov 2007 11:14:56 +0900
Paul Mundt <lethal@...ux-sh.org> wrote:

> By default ata_host_activate() expects a valid IRQ in order to
> successfully register the host. This patch enables a special case
> for registering polling-only hosts that either don't have IRQs
> or have buggy IRQ generation (either in terms of handling or
> sensing), which otherwise work fine.
> 
> Hosts that want to use polling mode can simply set ATA_FLAG_PIO_POLLING
> and pass in an invalid IRQ.
> 
> Signed-off-by: Paul Mundt <lethal@...ux-sh.org>

Acked-by: Alan Cox <alan@...hat.com>


May need to tweak polled isapnp support (or add it) to avoid the WARN but
I will take care of it
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