From: Jeff Garzik <jeff@garzik.org>
To: Fajun Chen <fajunchen@gmail.com>
Cc: "linux-ide@vger.kernel.org" <linux-ide@vger.kernel.org>,
Mark Lord <liml@rtr.ca>, Tejun Heo <htejun@gmail.com>
Subject: Re: PATA Sil680 Disabling IRQ
Date: Tue, 26 Feb 2008 19:58:38 -0500 [thread overview]
Message-ID: <47C4B5BE.7010709@garzik.org> (raw)
In-Reply-To: <8202f4270802261647t505cccf7ra3c81e5fccc9366a@mail.gmail.com>
Fajun Chen wrote:
> Hi All,
>
> Attached is the source code to Identify Device through sg (courtesy of
> Mark Lord). I intentionally change the data transfer from
> SG_DXFER_FROM_DEV to SG_DXFER_TO_DEV to expose the problem. When the
> code is run on SATA Sil3124 controller, it's working well. But when
> it is run on PATA Sil680, IRQ was disabled right away (see dmesg log
> below). I have a old kernel 2.6.18 rc2 but I suspect the same problem
> exists in latest kernel release as well. Please execute above code in
> your system and see what happens.
root has permission to do anything -- including misprogram the device
resulting in a lockup / data corruption / nuclear explosion.
We do not work around problems that only present themselves when a
privileged administrator is doing something really wrong.
Jeff
next prev parent reply other threads:[~2008-02-27 0:58 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-27 0:47 PATA Sil680 Disabling IRQ Fajun Chen
2008-02-27 0:58 ` Jeff Garzik [this message]
2008-02-28 0:20 ` Fajun Chen
2008-02-28 20:22 ` Alan Cox
2008-02-28 22:11 ` Fajun Chen
2008-02-28 22:24 ` Jeff Garzik
2008-02-28 23:10 ` Alan Cox
2008-02-29 1:07 ` Fajun Chen
2008-02-29 11:21 ` Alan Cox
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