From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759163AbZBEKGg (ORCPT ); Thu, 5 Feb 2009 05:06:36 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757210AbZBEKFr (ORCPT ); Thu, 5 Feb 2009 05:05:47 -0500 Received: from nwd2mail10.analog.com ([137.71.25.55]:29526 "EHLO nwd2mail10.analog.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755009AbZBEKFn (ORCPT ); Thu, 5 Feb 2009 05:05:43 -0500 X-IronPort-AV: E=Sophos;i="4.37,384,1231131600"; d="scan'208";a="82351962" From: Bryan Wu To: dbrownell@users.sourceforge.net, spi-devel-general@lists.sourceforge.net Cc: linux-kernel@vger.kernel.org, Mike Frysinger , Bryan Wu Subject: [PATCH 2/5] Blackfin SPI Driver: add comment about full duplex dma according to David Brownell Date: Thu, 5 Feb 2009 18:07:30 +0800 Message-Id: <1233828453-13311-3-git-send-email-cooloney@kernel.org> X-Mailer: git-send-email 1.5.6.3 In-Reply-To: <1233828453-13311-1-git-send-email-cooloney@kernel.org> References: <1233828453-13311-1-git-send-email-cooloney@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Mike Frysinger Signed-off-by: Mike Frysinger Signed-off-by: Bryan Wu --- drivers/spi/spi_bfin5xx.c | 7 ++++--- 1 files changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c index 74c5bb9..ce24d5e 100644 --- a/drivers/spi/spi_bfin5xx.c +++ b/drivers/spi/spi_bfin5xx.c @@ -766,9 +766,10 @@ static void bfin_spi_pump_transfers(unsigned long data) width, transfer->len); /* - * Try to map dma buffer and do a dma transfer if - * successful use different way to r/w according to - * drv_data->cur_chip->enable_dma + * Try to map dma buffer and do a dma transfer. If successful use, + * different way to r/w according to the enable_dma settings and if + * we are not doing a full duplex transfer (since the hardware does + * not support full duplex DMA transfers). */ if (!full_duplex && drv_data->cur_chip->enable_dma && drv_data->len > 6) { -- 1.5.6.3