Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756185Ab1BCPIY (ORCPT ); Thu, 3 Feb 2011 10:08:24 -0500 Received: from lo.gmane.org ([80.91.229.12]:55364 "EHLO lo.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752404Ab1BCPIW (ORCPT ); Thu, 3 Feb 2011 10:08:22 -0500 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: linux-kernel@vger.kernel.org To: linux-kernel@vger.kernel.org From: Nikolaus Rath Subject: How to check if DMA uses bounce buffer Date: Thu, 03 Feb 2011 10:01:15 -0500 Message-ID: <87pqr9cgck.fsf@inspiron.ap.columbia.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: ebox.rath.org Mail-Copies-To: never User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux) Cancel-Lock: sha1:n5JcToBASTZ8qIjZ5dN8WNxJgoY= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 578 Lines: 15 Hello, Is there a way to check if a dma mapping set up with dma_map_single will write directly into the provided buffer, or if the transfer will go through a bounce buffer? Thanks, -Nikolaus -- »Time flies like an arrow, fruit flies like a Banana.« PGP fingerprint: 5B93 61F8 4EA2 E279 ABF6 02CF A9AD B7F8 AE4E 425C -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/