From: Hin-Tak Leung <htl10@users.sourceforge.net>
To: "John W. Linville" <linville@tuxdriver.com>
Cc: Larry Finger <Larry.Finger@lwfinger.net>,
Serafeim Zanikolas <sez@debian.org>,
herton@mandriva.com.br, joe@perches.com, davem@davemloft.net,
linux-wireless@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] drivers: rtl818x: request DMA-able memory
Date: Mon, 25 Oct 2010 16:39:58 +0100 (BST) [thread overview]
Message-ID: <902045.66378.qm@web29504.mail.ird.yahoo.com> (raw)
In-Reply-To: <20101025142232.GC2414@tuxdriver.com>
--- On Mon, 25/10/10, John W. Linville <linville@tuxdriver.com> wrote:
> > I had a quick look for similiar constructs and AFAIK
> only the
> > b43/b43legacy drivers uses DMA buffers. Seems to be a
> rare practice.
> > Is that something we should or should not do?
>
> It doesn't mean what you think it means. It is a
> relic of the past,
> used to indicate memory below 16MB so that ISA devices
> could do DMA.
okay - sorry about the confusion - I was grep'ing for GFP_DMA and only b43/b43lagacy have it and it is relatively rare. AFAIK none of the rtl8187 devices are non-USB... probably a NACK then, but I should ask Serafeim if there is a reason for him to submit this patch? (other than "it says dma"...)
Hin-tak
next prev parent reply other threads:[~2010-10-25 15:46 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-24 20:32 [PATCH] drivers: rtl818x: request DMA-able memory Serafeim Zanikolas
2010-10-25 13:24 ` Larry Finger
2010-10-25 14:11 ` Hin-Tak Leung
2010-10-25 14:22 ` John W. Linville
2010-10-25 15:39 ` Hin-Tak Leung [this message]
2010-10-25 18:01 ` Larry Finger
2010-10-25 18:01 ` Larry Finger
2010-10-25 17:44 ` Serafeim Zanikolas
2010-10-25 14:23 ` Johannes Berg
2010-10-25 13:35 ` John W. Linville
-- strict thread matches above, loose matches on Subject: below --
2010-10-24 20:32 Serafeim Zanikolas
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