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From: Jeff Garzik <jgarzik@pobox.com>
To: Tejun Heo <htejun@gmail.com>
Cc: linux-ide@vger.kernel.org, justin@jmicron.com,
	andrew.lyon@gmail.com, fredrik@obra.se
Subject: Re: [PATCH] ahci: ignore PORT_IRQ_IF_ERR on JMB controllers
Date: Tue, 28 Nov 2006 03:49:20 -0500	[thread overview]
Message-ID: <456BF810.3050604@pobox.com> (raw)
In-Reply-To: <20061121014802.GR2184@htj.dyndns.org>

Tejun Heo wrote:
> JMicron AHCI controllers set PORT_IRQ_IF_ERR on device errors.  The
> IRQ status bit indicates interface error or protocol mismatch and ahci
> driver interprets it into AC_ERR_ATA_BUS.  So, whenever an ATAPI
> device raises check condition, ahci interprets it as ATA bus error and
> thus resets it which, in turn, raises check condition thus creating a
> reset loop and rendering the device unuseable.
> 
> This patch makes JMB controllers ignore PORT_IRQ_IF_ERR when
> interpreting error condition.
> 
> Signed-off-by: Tejun Heo <htejun@gmail.com>
> Cc: Justin Tsai <justin@jmicron.com>

ACK, but please resend against latest #upstream-fixes (which includes 
Intel ahci ICH9 PCI IDs)


      reply	other threads:[~2006-11-28  8:49 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-11-21  1:48 [PATCH] ahci: ignore PORT_IRQ_IF_ERR on JMB controllers Tejun Heo
2006-11-28  8:49 ` Jeff Garzik [this message]

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