linux-kernel - Re: RESEND: [PATCH] libata-sff: Fix oops reported in kerneloops.org for pnp devices with no ctl

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Message-ID: <20080529221922.48c9fcb8@core>
Date:	Thu, 29 May 2008 22:19:22 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Jeff Garzik <jeff@...zik.org>, linux-kernel@...r.kernel.org,
	linux-ide@...r.kernel.org
Subject: Re: RESEND: [PATCH] libata-sff: Fix oops reported in kerneloops.org
 for pnp devices with no ctl

> 	void ata_sff_pause(struct ata_port *ap)
> 	{
> 		ata_sff_altstatus();
> 		ndelay(400);
> 	}
> 
> and again, if there is no altstatus register, that's a low-level driver 
> issue.

This takes away the ability to shoot yourself directly in the foot and
replaces it with the ability to shoot yourself in the foot in a more
abstract way. The dma_pause case still needs to check as that is the one
where you can make an actual mess but yes it certainly cleans up the
others.

(Next rev brewing ;))
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