linux-kernel - Re: [PATCH 2/6] Blackfin Serial Driver: Add a debug function to serial driver.

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Date:	Thu, 16 Oct 2008 21:58:21 +0800
From:	"Bryan Wu" <cooloney@...nel.org>
To:	"Alan Cox" <alan@...hat.com>
Cc:	gyang <graf.yang@...log.com>,
	"Alan Cox" <alan@...rguk.ukuu.org.uk>,
	linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org
Subject: Re: [PATCH 2/6] Blackfin Serial Driver: Add a debug function to serial driver.

On Wed, Oct 15, 2008 at 4:38 PM, Alan Cox <alan@...hat.com> wrote:
> On Wed, Oct 15, 2008 at 10:23:41AM +0800, gyang wrote:
>> We are making a SMP like patch to blackfin, cpu_relax() is replaced by a
>> data cache flush function which will count it to a per-cpu counter.
>> If this serial function is called too early, the per-cpu data area have
>> not been initialized, this call will cause crash.
>> So we'd like to use barrier() instead of cpu_relax().
>
> Can you split that out as a separate change and include the explanation in
> the patch then.
>
> Thanks
> Alan
>

I'll handle this and will resend the whole blackfin serial driver
patches again as well as Sonic updates some bug fixing recently.

Thanks
-Bryan
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