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From: Sergei Shtylyov <sshtylyov@ru.mvista.com>
To: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Cc: Suleiman Souhlal <ssouhlal@freebsd.org>,
	linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/3] Make the IDE DMA timeout modifiable
Date: Tue, 12 Jun 2007 23:11:18 +0400	[thread overview]
Message-ID: <466EEFD6.9030001@ru.mvista.com> (raw)
In-Reply-To: <200702210342.20775.bzolnier@gmail.com>

Bartlomiej Zolnierkiewicz wrote:
>>On Feb 20, 2007, at 5:44 PM, Bartlomiej Zolnierkiewicz wrote:

>>>On Wednesday 21 February 2007 02:19, Suleiman Souhlal wrote:

>>>>It can be changed via /proc/ide/hd?/settings.

>>>Why do we need to change IDE DMA timeout dynamically?

>>I've used it to test error recovery (for example).

> Seems quite useable for developers but I would prefer not to
> expose it in production kernels for end users.

    It seems that I have counter example of a customer asking if this timeout 
can be done configurable. :-)
    BTW, why the timeout is so damn long? 2*WAIT_CMD is 20 secs, and if DMA is 
not complete or interrupt pending, it may wait 10 more secs...

> Thanks,
> Bart

MBR, Sergei

  reply	other threads:[~2007-06-12 19:09 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-02-21  1:19 Suleiman Souhlal
2007-02-21  1:44 ` Bartlomiej Zolnierkiewicz
2007-02-21  2:13   ` Suleiman Souhlal
2007-02-21  2:42     ` Bartlomiej Zolnierkiewicz
2007-06-12 19:11       ` Sergei Shtylyov [this message]
2007-06-15 23:23         ` Bartlomiej Zolnierkiewicz
2007-07-10 19:10           ` Sergei Shtylyov
2007-07-13 15:16             ` Alan Cox
2007-07-13 15:12               ` Mark Lord
2007-07-13 15:21                 ` Sergei Shtylyov
2007-07-13 19:36                   ` Mark Lord
2007-07-13 19:40                     ` Sergei Shtylyov
2007-07-13 19:46                       ` Mark Lord
2007-07-13 20:03                         ` Sergei Shtylyov
2007-07-13 21:00                           ` Mark Lord
2007-07-16 19:29                             ` Rogier Wolff
2007-07-17 14:18                               ` Sergei Shtylyov
2007-07-13 20:08                     ` Sergei Shtylyov
2007-07-13 20:54                       ` Mark Lord
2007-07-13 21:00                         ` Mark Lord

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