From: Sebastian Kemper <sebastian_ml@gmx.net>
To: Mark Lord <lkml@rtr.ca>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: libata/PATA: GPCMD_SET_STREAMING via SG_IO does nothing
Date: Wed, 14 Nov 2007 18:11:39 +0100 [thread overview]
Message-ID: <20071114171139.GA9387@section-eight> (raw)
In-Reply-To: <473B2541.10409@rtr.ca>
Hi Mark!
On Wed, Nov 14, 2007 at 11:41:37AM -0500, Mark Lord wrote:
> Ahh.. got it. The host_status returned (not checked by that code) was 7,
> which means "host error".
>
> In this case, that's because the cmd_len is (16), which is too large for
> ATAPI.
> It needs to be changed to (12) instead.
I don't understand. You seem to use a cmd_len of 16 in hdparm yourself.
And why does it work with the "old" ATA driver and not with libata if
16 is too large for ATAPI in general?
> The code (apart from totally mishandling any kinds of errors) works after
> that.
Greetings
Sebastian
next prev parent reply other threads:[~2007-11-14 17:11 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-13 16:43 libata/PATA: GPCMD_SET_STREAMING via SG_IO does nothing Sebastian Kemper
2007-11-13 21:22 ` Alan Cox
2007-11-13 23:28 ` Sebastian Kemper
2007-11-14 12:11 ` Sebastian Kemper
2007-11-14 15:09 ` Mark Lord
2007-11-14 15:38 ` Sebastian Kemper
2007-11-14 16:00 ` Mark Lord
2007-11-14 17:44 ` [PATCH] libata-scsi: be tolerant of 12-byte ATAPI commands in 16-byte CDBs Mark Lord
2007-11-14 17:50 ` Alan Cox
2007-11-15 2:26 ` Tejun Heo
2007-11-14 16:26 ` libata/PATA: GPCMD_SET_STREAMING via SG_IO does nothing Mark Lord
2007-11-14 16:41 ` Mark Lord
2007-11-14 17:11 ` Sebastian Kemper [this message]
2007-11-14 17:21 ` Mark Lord
2007-11-15 20:55 ` Bartlomiej Zolnierkiewicz
2007-11-15 20:59 ` Mark Lord
2007-11-14 17:16 ` Sebastian Kemper
2007-11-14 17:49 ` Mark Lord
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