From: Jens Axboe <axboe@suse.de>
To: Jeff Garzik <jgarzik@pobox.com>
Cc: Alan Chandler <alan@chandlerfamily.org.uk>, linux-kernel@vger.kernel.org
Subject: Re: ide-cd problem
Date: Tue, 23 Nov 2004 20:13:50 +0100 [thread overview]
Message-ID: <20041123191349.GM13174@suse.de> (raw)
In-Reply-To: <41A3829C.4060901@pobox.com>
On Tue, Nov 23 2004, Jeff Garzik wrote:
> Jens Axboe wrote:
> > /* packet command */
> >- HWIF(drive)->OUTB(WIN_PACKETCMD, IDE_COMMAND_REG);
> >+ spin_lock_irqsave(&ide_lock, flags);
> >+ HWIF(drive)->OUTBSYNC(drive, WIN_PACKETCMD, IDE_COMMAND_REG);
> >+ ndelay(400);
> >+ spin_unlock_irqrestore(&ide_lock, flags);
> > return (*handler) (drive);
>
>
> FWIW this ndelay(400) is required by the spec, when you submit a command.
Yes, I know it isn't pulled out of thin air :)
--
Jens Axboe
prev parent reply other threads:[~2004-11-23 19:18 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-11-20 18:42 ide-cd problem Alan Chandler
2004-11-20 19:47 ` Jens Axboe
2004-11-21 0:53 ` Alan Chandler
2004-11-21 8:56 ` Jens Axboe
2004-11-21 10:25 ` Alan Chandler
2004-11-21 16:13 ` Alan Chandler
2004-11-22 7:52 ` Alan Chandler
2004-11-22 8:01 ` Jens Axboe
2004-11-22 10:30 ` Alan Chandler
2004-11-22 10:51 ` Jens Axboe
2004-11-22 11:29 ` Alan Chandler
2004-11-22 11:31 ` Jens Axboe
2004-11-22 12:53 ` Alan Chandler
2004-11-22 13:02 ` Jens Axboe
2004-11-22 19:19 ` Alan Chandler
2004-11-22 23:48 ` Alan Chandler
2004-11-23 7:13 ` Alan Chandler
2004-11-23 14:51 ` Jens Axboe
2004-11-23 21:49 ` Alan Chandler
2004-11-26 23:39 ` Alan Chandler
2004-11-29 17:29 ` Bill Davidsen
2004-11-30 8:59 ` Alan Chandler
2004-12-10 21:32 ` ide-cd problem revisited - more brainpower needed Alan Chandler
2004-12-10 23:14 ` Alan Cox
2004-12-12 0:17 ` Alan Chandler
2004-12-12 11:39 ` Alan Cox
2004-12-12 13:34 ` Alan Chandler
2004-12-14 0:20 ` Alan Chandler
2004-12-16 15:56 ` Bill Davidsen
2004-12-17 23:59 ` Alan Chandler
2004-11-24 23:19 ` ide-cd problem Alan Cox
2004-11-25 15:29 ` Jens Axboe
2004-11-25 16:25 ` Alan Cox
2004-11-25 18:12 ` Jens Axboe
2004-11-25 18:45 ` Alan Chandler
2004-11-23 18:34 ` Jeff Garzik
2004-11-23 19:13 ` Jens Axboe [this message]
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