Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756298Ab1FTX2N (ORCPT ); Mon, 20 Jun 2011 19:28:13 -0400 Received: from mailhost.informatik.uni-hamburg.de ([134.100.9.70]:40173 "EHLO mailhost.informatik.uni-hamburg.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755167Ab1FTX2M (ORCPT ); Mon, 20 Jun 2011 19:28:12 -0400 Message-ID: <4DFFD738.4090206@metafoo.de> Date: Tue, 21 Jun 2011 01:26:48 +0200 From: Lars-Peter Clausen User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.16) Gecko/20110505 Icedove/3.0.11 MIME-Version: 1.0 To: Mark Brown CC: linux-kernel@vger.kernel.org, Dimitris Papastamos , Liam Girdwood , Samuel Oritz , Graeme Gregory Subject: Re: [PATCH 3/8] regmap: Add SPI bus support References: <20110620124608.GB31140@opensource.wolfsonmicro.com> <1308574489-31322-1-git-send-email-broonie@opensource.wolfsonmicro.com> <1308574489-31322-3-git-send-email-broonie@opensource.wolfsonmicro.com> In-Reply-To: <1308574489-31322-3-git-send-email-broonie@opensource.wolfsonmicro.com> X-Enigmail-Version: 1.0.1 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 736 Lines: 19 On 06/20/2011 02:54 PM, Mark Brown wrote: > [...] > + > +static int regmap_spi_read(struct device *dev, > + const void *reg, size_t reg_size, > + void *val, size_t val_size) > +{ > + struct spi_device *spi = to_spi_device(dev); > + > + return spi_write_then_read(spi, reg, reg_size, val, val_size); spi_write_then_read will use a bounce buffer internally, since we already have our own bounce buffer it is probably better to use the low-level spi interface directly in this case. -- 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/