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From: "Thiago Galesi" <thiagogalesi@gmail.com>
To: "Alan Stern" <stern@rowland.harvard.edu>
Cc: "Alex Buell" <alex.buell@munted.org.uk>,
	linux-kernel@vger.kernel.org, "Robert Hancock" <hancockr@shaw.ca>,
	"Tomas Styblo" <tripie@cpan.org>,
	linux-usb@vger.kernel.org, usb-storage@lists.one-eyed-alien.net
Subject: Re: [PATCH] JMicron JM20337 USB-SATA data corruption bugfix - device 152d:2338
Date: Tue, 2 Sep 2008 17:16:22 -0300	[thread overview]
Message-ID: <82ecf08e0809021316l68272103q9daff7b12ed90e8b@mail.gmail.com> (raw)
In-Reply-To: <Pine.LNX.4.44L0.0809021508480.5583-100000@iolanthe.rowland.org>

Hello

>
> I can't tell exactly what's happening, but your device is sending back
> a lot of error messages (Not Ready - Medium not present).  Maybe it
> doesn't recognize the type of disc you have loaded. Also, there appears to be some program querying the state of your
> device 7 or 8 times every two seconds.

Ok, I suspect what this may be, and I'll disable it, hopefully
producing a cleaner log.

> However what finally caused the failure was a command (0xAC) which I
> don't recognize and apparently your drive doesn't recognize either.

Is this it? dfbb5d80 1845367929 C Bi:6:002:1 0 13 = 55534253 acc90100
00000000 00

Any idea who may be sending this? I mean,  can this be send via a
simple IOCTL to /dev/sr0 or it is something else?
Maybe stracing the program would be a good idea.

If I were to place a trace inside a driver, were would it be better?
sr_mod, sd_mod, usb-storage, cdrom? or somewhere else?

Thank you

-- 
-
Thiago Galesi

  reply	other threads:[~2008-09-02 20:16 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <fa.eWQqoO1e4Mdhu8SK5jzMFAI/3NU@ifi.uio.no>
2008-07-21 19:37 ` Robert Hancock
2008-07-22  2:37   ` Alan Stern
2008-07-22  9:03     ` Tomas Styblo
2008-07-23  2:38       ` Alan Stern
2008-07-23 23:20         ` Robert Hancock
2008-07-24  3:42           ` Alan Stern
2008-07-30 19:55             ` Robert Hancock
2008-07-30 20:00               ` [usb-storage] " Matthew Dharm
2008-07-30 20:46                 ` Robert Hancock
2008-07-30 21:18                 ` Alan Stern
2008-07-30 21:07               ` Alan Stern
2008-08-01 21:15                 ` Alex Buell
2008-08-01 22:22                   ` Alex Buell
2008-08-02  2:32                     ` Robert Hancock
2008-08-02 23:49                     ` Alan Stern
2008-08-03  9:07                       ` Alex Buell
2008-08-04 16:48                         ` Alan Stern
2008-08-04 20:17                           ` Alex Buell
2008-08-04 20:45                             ` Alan Stern
2008-09-02 12:10                               ` Thiago Galesi
2008-09-02 15:02                                 ` Alan Stern
2008-09-02 16:07                                   ` Thiago Galesi
2008-09-02 19:19                                     ` Alan Stern
2008-09-02 20:16                                       ` Thiago Galesi [this message]
2008-09-02 21:06                                         ` Alan Stern
2008-09-04 12:09                                           ` Thiago Galesi
2008-09-04 14:03                                             ` Alan Stern
2008-09-04 15:17                                               ` Thiago Galesi
2008-09-04 15:26                                                 ` Alan Stern
2008-07-25  8:44           ` Tomas Styblo
2008-07-25  8:54             ` Robert Hancock
2008-07-22  5:11   ` Tomas Styblo
2008-07-22  5:31     ` Robert Hancock
2008-07-22  6:11       ` Tomas Styblo
2008-07-22  8:45         ` Robert Hancock
2008-07-24  6:15           ` Alex Buell
2008-07-29 21:09           ` Alex Buell
2008-07-29 22:33             ` [usb-storage] " Matthew Dharm
2008-07-20  5:13 Tomas Styblo

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