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Bug#348572: marked as done (linux-2.6: please enable SATA ATAPI support in drivers/scsi/libata-core.c)

Your message dated Thu, 11 Jan 2007 10:34:41 +0100
with message-id <20070111093441.GH26700@baikonur.stro.at>
and subject line Bug#326004: http://wiki.debian.org/DebianInstaller/SataAtapiHowto
has caused the attached Bug report to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what I am
talking about this indicates a serious mail system misconfiguration
somewhere.  Please contact me immediately.)

Debian bug tracking system administrator
(administrator, Debian Bugs database)
--- Begin Message --- 
Package: kernel-image
Version: 2.6.15-rc6-test
Severity: Wishlist

I would like to bring to your attention the desire for Debian
to support SATA ATAPI CD Drives.

In case you are not aware, the 2.6.15 kernel from www.kernel.org
does support SATA ATAPI CD Drives. 

However, that support is disabled by default in the 2.6.15
kernel because some consider it not production ready.

It is easy to enable the SATA ATAPI support by default in 
the 2.6.15 kernel. It needs one small change in one of the 
device driver files in the kernel source.

The file is drivers/scsi/libata-core.c. You will see a variable
called atapi_enabled. It is set to 0. You need to change it so that
it is set to 1. 

Here is a suggested patch:

Tags: patch
##################################################################
--- libata-core.c.old      2006-01-17 11:01:14.000000000 -0800
+++ libata-core.c     2006-01-17 11:01:41.000000000 -0800
@@ -78,7 +78,7 @@
 static unsigned int ata_unique_id = 1;
 static struct workqueue_struct *ata_wq;

-int atapi_enabled = 0;
+int atapi_enabled = 1;
 module_param(atapi_enabled, int, 0444);
 MODULE_PARM_DESC(atapi_enabled, "Enable discovery of ATAPI devices
(0=off,1=on)");

##################################################################

I am calling this to your attention because there may be systems
delivered in the future which would not have a PATA (IDE)
controller, or CD-ROM drive; they would only have a SATA ATAPI 
CD-ROM drive. 

In order for any of your customers to be able to install Debian on
a system with only a SATA ATAPI CD-ROM drive; both the installer
kernel, as well as the running kernel, would have to be at least
version 2.6.15 and would need to have the SATA ATAPI support enabled
(by setting the atapi_enabled value in drivers/scsi/libata-core.c
to 1).

Installing a distro in a SATA ATAPI CD-ROM drive equipped system 
without having SATA ATAPI enabled would be a complicated process
(using either a 2nd system and moving the hard drive or temporarily
installing a PATA (IDE) controller and CD-ROM) would be beyond the
means of many of your users and customers.

I would like to suggest that you consider enabling SATA ATAPI support
within Debian. 

I have done some testing on an Intel 865 chipset based system that is 
equipped with a Plextor PX-716SA Serial SATA ATAPI DVD/CD Read-Write
drive. All of these components are available off-the-shelf. I performed
CD and DVD writing and reading; using checksums to verify that what is
written on the DVD and CD are in agreement with what is read off of the
DVD and CD.

What additional testing would you suggest before enabling the SATA
ATAPI support?

Truly,

Mark Allyn
(Intel Corporation)

--- End Message ---
--- Begin Message --- 
Version: 2.6.17-1

On Thu, Jan 11, 2007 at 01:39:14AM +0000, Sam Morris wrote:
> For the sake of those finding this bug via Google, etc: according to
> <http://wiki.debian.org/DebianInstaller/SataAtapiHowto> the kernel
> parameter 'libata.atapi_enabled=1' will enable the use of SATA optical
> drives.

this bug is no longer present as upstream has enabled libata.
inefficient bug hoarding, kicking.

-- 
maks

--- End Message ---
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