From: Tejun Heo <htejun@gmail.com>
To: Alan <alan@lxorguk.ukuu.org.uk>
Cc: albertl@mail.com, albertcc@tw.ibm.com,
Jeff Garzik <jeff@garzik.org>,
Linux IDE <linux-ide@vger.kernel.org>,
Mark Lord <mlord@pobox.com>,
matthieu castet <castet.matthieu@free.fr>,
Tobias Powalowski <t.powa@gmx.de>
Subject: Re: [PATCH] libata: waits up to 10 microseconds for early irq problem
Date: Tue, 28 Nov 2006 19:27:29 +0900 [thread overview]
Message-ID: <456C0F11.30301@gmail.com> (raw)
In-Reply-To: <20061128102534.5a42c9b2@localhost.localdomain>
Alan wrote:
> On Tue, 28 Nov 2006 14:52:28 +0800
> Albert Lee <albertcc@tw.ibm.com> wrote:
>
>> Some devices raise irq early before clearing the BSY.
>> This patch waits up to 10 microseconds to workaround the early irq problem.
>>
>> Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Does this early IRQ happen for any command other than SET XFERMODE?
Generic fix for SET XFERMODE is in the tree now.
> Acked-by: Alan Cox <alan@redhat.com>
>
> The IRQ delivery is async to the I/O so this makes a lot of sense for all
> cases.
I don't think that's true unless the controller is doing something funky
as in SET XFERMODE. Can you enlighten me?
--
tejun
next prev parent reply other threads:[~2006-11-28 10:27 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200611180759.34622.t.powa@gmx.de>
[not found] ` <20061118002357.564dbb9d.akpm@osdl.org>
2006-11-18 21:20 ` possibility to merge via_pata fixes to .19 stable series? Jeff Garzik
2006-11-18 22:43 ` Alan
2006-11-19 3:07 ` Andrew Morton
2006-11-19 5:34 ` Tejun Heo
2006-11-19 6:02 ` Andrew Morton
2006-11-28 6:52 ` [PATCH] libata: waits up to 10 microseconds for early irq problem Albert Lee
2006-11-28 10:25 ` Alan
2006-11-28 10:27 ` Tejun Heo [this message]
2006-11-28 10:46 ` Alan
2006-11-28 14:00 ` Mark Lord
2006-11-28 14:12 ` Alan
2006-11-28 14:16 ` Mark Lord
2006-11-28 11:32 ` Albert Lee
2006-11-28 14:17 ` Albert Lee
2006-11-28 14:42 ` Mark Lord
2006-11-28 19:13 ` Jeff Garzik
2006-11-30 9:43 ` [PATCH] libata: blacklist " Albert Lee
2006-11-30 11:29 ` Alan
2006-11-30 20:37 ` Mark Lord
2006-11-30 20:45 ` Mark Lord
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