From: Jeff Garzik <jeff@garzik.org>
To: Tejun Heo <tj@kernel.org>
Cc: linux-ide@vger.kernel.org
Subject: Re: [PATCH 8/8] libata: implement HORKAGE_1_5_GBPS and apply it to WD My Book
Date: Mon, 02 Feb 2009 23:04:51 -0500 [thread overview]
Message-ID: <4987C263.90000@garzik.org> (raw)
In-Reply-To: <1233228696-10562-9-git-send-email-tj@kernel.org>
Tejun Heo wrote:
> 3Gbps is often much more prone to transmission failures. It's usually
> okay to let EH handle speed down after transmission failures but some
> WD My Book drives completely shutdown after certain transmission
> failures and after it only power cycling can revive them. Combined
> with the fact that external drives often end up with cable assembly
> which is longer than usual and more likely to have intervening gender,
> this makes these drives very likely to shutdown under certain
> configurations virtually rendering them unusable.
>
> This patch implements HOARKGE_1_5_GBPS and applies it to WD My Book
> such that 1.5Gbps is forced once the device is identified.
>
> Please take a look at the following bz for related reports.
>
> http://bugzilla.kernel.org/show_bug.cgi?id=9913
>
> Signed-off-by: Tejun Heo <tj@kernel.org>
applied 1-8
next prev parent reply other threads:[~2009-02-03 4:04 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-29 11:31 [PATCHSET #upstream-fixes] libata: improve flaky link handling Tejun Heo
2009-01-29 11:31 ` [PATCH 1/8] libata: fix EH device failure handling Tejun Heo
2009-01-29 11:31 ` [PATCH 2/8] libata: move ata_dev_disable() to libata-eh.c Tejun Heo
2009-01-29 11:31 ` [PATCH 3/8] libata: check onlineness before using SPD in sata_down_spd_limit() Tejun Heo
2009-01-29 11:31 ` [PATCH 4/8] libata: clear dev->ering in smarter way Tejun Heo
2009-01-29 11:31 ` [PATCH 5/8] libata: add @spd_limit to sata_down_spd_limit() Tejun Heo
2009-01-29 11:31 ` [PATCH 6/8] libata: improve probe failure handling Tejun Heo
2009-01-29 11:31 ` [PATCH 7/8] libata: add no penalty retry request for EH device handling routines Tejun Heo
2009-01-29 11:31 ` [PATCH 8/8] libata: implement HORKAGE_1_5_GBPS and apply it to WD My Book Tejun Heo
2009-02-03 4:04 ` Jeff Garzik [this message]
2009-01-29 14:07 ` [PATCHSET #upstream-fixes] libata: improve flaky link handling Greg Freemyer
2009-01-29 15:50 ` Mark Lord
2009-01-29 23:57 ` Tejun Heo
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