linux-kernel - Re: [patch 10/50] libata: force hardreset if link is in powersave mode

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Date:	Fri, 6 Jun 2008 18:27:15 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Chris Wright <chrisw@...s-sol.org>
cc:	linux-kernel@...r.kernel.org, stable@...nel.org,
	Jeff Garzik <jeff@...zik.org>,
	IDE/ATA development list <linux-ide@...r.kernel.org>,
	Justin Forbes <jmforbes@...uxtx.org>,
	Zwane Mwaikambo <zwane@....linux.org.uk>,
	"Theodore Ts'o" <tytso@....edu>,
	Randy Dunlap <rdunlap@...otime.net>,
	Dave Jones <davej@...hat.com>,
	Chuck Wolber <chuckw@...ntumlinux.com>,
	Chris Wedgwood <reviews@...cw.f00f.org>,
	Michael Krufky <mkrufky@...uxtv.org>,
	Chuck Ebbert <cebbert@...hat.com>,
	Domenico Andreoli <cavokz@...il.com>,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Tejun Heo <htejun@...il.com>, matthieu.castet@...rot.com,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: Re: [patch 10/50] libata: force hardreset if link is in powersave
 mode



On Fri, 6 Jun 2008, Chris Wright wrote:
>
> -stable review patch.  If anyone has any objections, please let us know.
> ---------------------
> 
> From: Tejun Heo <htejun@...il.com>
> 
> Inhibiting link PM mode doesn't bring the link back online if it's
> already in powersave mode.  If SRST is used in these cases, libata EH
> thinks that the link is offline and fails detection.  Force hardreset
> if link is in powersave mode.

This isn't upstream. Maybe there's some reason it's not needed upstream, 
but it would be nice to know.

		Linus
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