From: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
To: linux-sh@vger.kernel.org
Subject: Re: [PATCH v3] dmaengine: sh: Add Support SuperH DMA Engine driver
Date: Thu, 02 Apr 2009 09:16:47 +0000 [thread overview]
Message-ID: <49D4827F.6080906@renesas.com> (raw)
In-Reply-To: <49C9D558.7030002@renesas.com>
Hi, Dan.
Thank you for your commnets.
Dan Williams wrote:
> Paul Mundt wrote:
>> On Wed, Mar 25, 2009 at 03:55:20PM +0900, Nobuhiro Iwamatsu wrote:
>>> This supported all DMA channels, and it was tested in SH7722,
>>> SH7780 and SH7763.
>>> This can not use with SH DMA API.
>>>
>>> Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
>>> Reviewed-by: Matt Fleming <matt@console-pimps.org>
>>
>> I don't know why you dropped Dan from the CC, but you need his Acked-by
>> or Reviewed-by before this can be merged.
>
> Thanks Paul.
>
> This version still has the problem of up leveling the descriptor lock to
> spin_lock_irqsave from spin_lock_bh. This poses a problem for
> completion callback support where callbacks assume that interrupts are
> enabled, like a timer callback. I have also spotted a new problem below:
>
I understood. I fix your undication part.
Best regards,
Nobuhiro
prev parent reply other threads:[~2009-04-02 9:16 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-25 6:55 [PATCH v3] dmaengine: sh: Add Support SuperH DMA Engine driver Nobuhiro Iwamatsu
2009-03-30 22:55 ` Paul Mundt
2009-03-31 12:05 ` Sosnowski, Maciej
2009-03-31 16:01 ` Dan Williams
2009-04-02 9:14 ` Nobuhiro Iwamatsu
2009-04-02 9:16 ` Nobuhiro Iwamatsu [this message]
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