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)
prev parent 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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