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

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Message-ID: <CAHp75VdNVyWxvnHDFjg_5vC95M_LwJYUDLQb+NmBA6GRVsea9g@mail.gmail.com>
Date:	Fri, 12 Oct 2012 18:53:14 +0300
From:	Andy Shevchenko <andy.shevchenko@...il.com>
To:	Viresh Kumar <viresh.kumar@...aro.org>
Cc:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	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 Fri, Oct 12, 2012 at 6:18 PM, Viresh Kumar <viresh.kumar@...aro.org> wrote:
> 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;
>>> +     }
1. This is an equivalent of
if (last_dw && (last_bus_id == ... ) && (last_dw == dw))
 return false;
2. In case dw is always non-NULL the last_dw == dw is false if last_dw is NULL.

Where am I wrong?

> You are already drunk.
Not yet, but tired.

-- 
With Best Regards,
Andy Shevchenko
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