From: Jeff Garzik <jgarzik@pobox.com>
To: Tejun Heo <htejun@gmail.com>
Cc: albertcc@tw.ibm.com, linux-ide@vger.kernel.org
Subject: Re: [PATCH 1/5] libata: check if port is disabled after internal command
Date: Fri, 24 Mar 2006 09:40:21 -0500 [thread overview]
Message-ID: <442404D5.7050504@pobox.com> (raw)
In-Reply-To: <11431815303557-git-send-email-htejun@gmail.com>
Tejun Heo wrote:
> libata core is being changed to disallow port/device disable on lower
> layers. However, some LLDDs (sata_mv) directly disable port on
> command failure. This patch makes ata_exec_internal() check whether a
> port got disabled after an internal command. If it is, AC_ERR_SYSTEM
> is added to err_mask and the port gets re-enabled.
>
> As internal command failure results in device disable for drivers
> which don't implement newer reset/EH callbacks, this change results in
> no behavior change for single device per port controllers. For
> slave-possible LLDDs which disable port on command failure, (1) such
> drivers don't exist currently, (2) issuing command to the other device
> of once-disabled port shouldn't result in catastrophe even if such
> driver exists. So, this should be enough as a temporary measure.
>
> Signed-off-by: Tejun Heo <htejun@gmail.com>
applied 1-4
next prev parent reply other threads:[~2006-03-24 14:40 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-24 6:25 [PATCHSET] libata: add @disable_on_err to ata_set_mode(), take#2 Tejun Heo
2006-03-24 6:25 ` [PATCH 1/5] libata: check if port is disabled after internal command Tejun Heo
2006-03-24 14:40 ` Jeff Garzik [this message]
2006-03-24 6:25 ` [PATCH 4/5] libata: make ata_set_mode() responsible for failure handling Tejun Heo
2006-03-24 6:25 ` [PATCH 3/5] libata: use ata_dev_disable() in ata_bus_probe() Tejun Heo
2006-03-24 6:25 ` [PATCH 5/5] libata: add @disable_on_err argument to ata_set_mode() Tejun Heo
2006-03-24 15:04 ` Jeff Garzik
2006-03-24 15:51 ` Alan Cox
2006-03-25 0:53 ` [PATCH 1/2] libata: implement ata_dev_enabled, disabled and present() Tejun Heo
2006-03-25 3:50 ` Jeff Garzik
2006-03-25 1:14 ` [PATCH 2/2] libata: add @disable_on_err argument to ata_set_mode() Tejun Heo
2006-03-25 4:03 ` Jeff Garzik
2006-03-25 5:40 ` Tejun Heo
2006-03-25 6:12 ` [PATCH 1/2] libata: implement ata_dev_enabled and disabled() Tejun Heo
2006-03-25 23:54 ` Alan Cox
2006-03-25 23:57 ` Tejun Heo
2006-03-27 11:17 ` Alan Cox
2006-03-29 6:58 ` Tejun Heo
2006-03-29 11:59 ` Alan Cox
2006-03-30 21:59 ` Jeff Garzik
2006-03-30 23:36 ` Tejun Heo
2006-03-25 6:13 ` [PATCH 2/2] libata: add @disable_on_err argument to ata_set_mode() Tejun Heo
2006-03-25 23:58 ` Alan Cox
2006-03-24 6:25 ` [PATCH 2/5] libata: implement ata_dev_disable() Tejun Heo
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