linux-kernel - Re: [PATCH] libata: implement ata_wait_after

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Date:	Thu, 17 May 2007 09:59:11 +0900
From:	Paul Mundt <lethal@...ux-sh.org>
To:	Tejun Heo <htejun@...il.com>, jeff@...zik.org,
	linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org,
	garyhade@...ibm.com
Subject: Re: [PATCH] libata: implement ata_wait_after_reset()

On Wed, May 16, 2007 at 06:44:53PM +0200, Tejun Heo wrote:
> +	/* FIXME: GoVault needs 2s but we can't afford that without
> +	 * parallel probing.  800ms is enough for iVDR disk
> +	 * HHD424020F7SV00.  Increase to 2secs when parallel probing
> +	 * is in place.
> +	 */
> +	ATA_TMOUT_FF_WAIT	= 4 * HZ / 5,
> +

Changing this to 4 * HZ / 4 gets rid of the occasional COMRESET failure.
So it would seem that 800ms is good enough for the common case, but it
seems to be cutting it pretty close..
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