From mboxrd@z Thu Jan 1 00:00:00 1970 From: Larry Finger Subject: Re: [PATCH] drivers: rtl818x: request DMA-able memory Date: Mon, 25 Oct 2010 13:01:25 -0500 Message-ID: <4CC5C5F5.3080607@lwfinger.net> References: <902045.66378.qm@web29504.mail.ird.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: "John W. Linville" , Serafeim Zanikolas , herton-4qZELD6Fgxg39yzSjRtAkw@public.gmane.org, joe-6d6DIl74uiNBDgjK7y7TUQ@public.gmane.org, davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org, linux-wireless-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: htl10-Rn4VEauK+AKRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Return-path: In-Reply-To: <902045.66378.qm-gyycVyw5OoDyX4RqAA4FmIglqE1Y4D90QQ4Iyu8u01E@public.gmane.org> Sender: linux-wireless-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: netdev.vger.kernel.org On 10/25/2010 10:39 AM, Hin-Tak Leung wrote: > > 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"...) There are some devices driven by b43/b43legacy that implement only 24-bit DMA. For that reason, they need to allocate DMA buffers in the low 16 MB of RAM. For rtl8187, that consideration does not apply. Larry -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html