linux-kernel - Re: [PATCH] dw_dmac: switch to use dma

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Date:	Wed, 16 Jan 2013 15:39:11 +0200
From:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:	Viresh Kumar <viresh.kumar@...aro.org>
Cc:	Vinod Koul <vinod.koul@...el.com>, linux-kernel@...r.kernel.org,
	spear-devel <spear-devel@...t.st.com>
Subject: Re: [PATCH] dw_dmac: switch to use dma_pool API

On Wed, 2013-01-16 at 15:18 +0530, Viresh Kumar wrote: 
> > @@ -1125,7 +1083,6 @@ static int dwc_alloc_chan_resources(struct dma_chan *chan)
> > +               memset(desc, 0, sizeof(struct dw_desc));
> > +
> 
> why do we need this? We always fill all fields of this structure, isn't it?

No, it is not. At least we don't fill everything at
alloc_chan_resources() stage. Previous code used kzalloc. I decide to
use memset to avoid potential side effects in the future.

-- 
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Intel Finland Oy
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