lkml.org 
[lkml]   [2002]   [Oct]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: IDE subsystem issues with 2.4.18/19

If it is "empirically" derived and reproduceble, I like it.
Especially when the theory people actually do it the empirical way.
(noting your sig)


On Thu, 3 Oct 2002, Bernd Schubert wrote:

> On Friday 04 October 2002 14:01, Dexter Filmore wrote:
> > Got a motherboard with VIA VT8233 Southbridge (a MSI K7T266 Pro2),
> > Slackware 8.1 with a standard kernel (tried .18 as well as .19) patched
> > with SGI XFS support, two atapi drives attached with /dev/hdc is Pioneer115
> > DVD and /dev/hdd is a Traxdata 24x-writer, both running in scsi emulation.
> > Got VIA-support compiled in.
> >
> > Everythings runs fine: reading DVD, reading CD, writing CD.
> > *Apart from*: CD ripping. When trying to read audio CDs, the system locks
> > up, can't reproduce the exact error msgs right now, need a running system
> > atm. If you like, I'll post them later on.
> >
> > Tried cdparanoia 9.8-III, cdda2wav - nothing works.
> >
> > I contacted Vojtech Pavlik, the author of the via82xxx.c code who advised
> > me to ask Alan Cox or Andre Hedrick about this, so I thought best write to
> > this list.
> > Are there any workarounds/patches/voodoo magic for this problem?
> >
> > Dex
>
>
> Hi,
>
> I don't know if it is related to this, but there seems to be general bug in
> the cdrom-ide driver to get the exact size of a CD.
> When reading a CD-image using dd, my system also locks up until I eject the CD
> with the cdrom-drive-eject button.
>
> I've already send the following patch to Jens Axboe, but so far he hasn't
> answered yet:
>
> diff -rbBu linux-2.4.19/drivers/ide/ide-cd.c
> linux-2.4.19_mod/drivers/ide/ide-cd.c
> --- linux-2.4.19/drivers/ide/ide-cd.c Sat Aug 3 02:39:44 2002
> +++ linux-2.4.19_mod/drivers/ide/ide-cd.c Mon Sep 30 13:43:35 2002
> @@ -1903,7 +1903,7 @@
>
> stat = cdrom_queue_packet_command(drive, &pc);
> if (stat == 0)
> - *capacity = 1 + be32_to_cpu(capbuf.lba);
> + *capacity = be32_to_cpu(capbuf.lba) - 1;
>
> return stat;
> }
>
>
> Please note that I got the correct value of *capacity empirically, since I
> compered several values of the IDE-drive with the ones of my scsi drive.
>
> Since I don't understand the cdrom_read_capacity() function (would be nice if
> someone could explain me, where "capbuf.lba" gets its values and
> what be32_to_cpu() does), I'm not 100% sure that the patch is correct.
>
>
> Bernd
>
> --
> Bernd Schubert
> Physikalisch Chemisches Institut
> Abt. Theoretische Chemie
> INF 229, 69120 Heidelberg
> Tel.: 06221/54-5210
> e-mail: bernd (dot) schubert (at) pci (dot) uni-heidelberg (dot) de
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
>

Andre Hedrick
LAD Storage Consulting Group

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:29    [W:0.058 / U:0.936 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site