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Date: Fri, 19 Apr 2013 13:13:34 +0200
Message-ID: <CAGXE3d-a00=4edmbpEgjkDEuax+bnkqJJ70osDhUMe__Jx_0=w@mail.gmail.com> (sfid-20130419_131341_865087_5B0AF999)
Subject: Re: [rt2x00-users] [PATCH 2/2] rt2800: nulify all last words of TXWI
From: Helmut Schaa <helmut.schaa@googlemail.com>
To: Gertjan van Wingerde <gwingerde@gmail.com>
Cc: Stanislaw Gruszka <stf_xl@wp.pl>,
	"John W. Linville" <linville@tuxdriver.com>,
	"linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
	rt2x00 Users List <users@rt2x00.serialmonkey.com>
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Hi Gertjan,

On Fri, Apr 19, 2013 at 11:49 AM, Gertjan van Wingerde
<gwingerde@gmail.com> wrote:
> Wouldn't it be easier / better to simply clear the whole descriptor at
> the start, instead of selective clearing parts of it after everything
> has been written already?

This would add a number of unneeded writes to DMA coherent memory.
And since the descriptor is initialized word by word Stanislaw's approach
looks reasonable to me.

Helmut