linux-kernel - Re: [PATCH V2 2/3] dmaengine: dw_dmac: Enhance device tree support

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Message-ID: <CAKohponS+mkj6rN6hzJC1FrbpSS+jWZBii4xQgN+4z2h=zFTWA@mail.gmail.com>
Date:	Fri, 12 Oct 2012 20:48:56 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:	vinod.koul@...el.com, linux-kernel@...r.kernel.org,
	spear-devel@...t.st.com, linux-arm-kernel@...ts.infradead.org,
	devicetree-discuss@...ts.ozlabs.org
Subject: Re: [PATCH V2 2/3] dmaengine: dw_dmac: Enhance device tree support

On 12 October 2012 20:28, Andy Shevchenko
<andriy.shevchenko@...ux.intel.com> wrote:
> On Fri, 2012-10-12 at 20:01 +0530, Viresh Kumar wrote:

>> +     if (last_dw) {
>> +             if ((last_bus_id == param) && (last_dw == dw))
>> +                     return false;
>> +     }

> Just came to my mind.
> dw can't be NULL, can't it?
> Then
> if (last_dw) {
> ...
> }
> is unneeded.

dw can't be but last_dw can be, which we are making NULL when
we find a channel :)

You are already drunk.

--
viresh
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