From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761277AbbEEQaI (ORCPT ); Tue, 5 May 2015 12:30:08 -0400 Received: from mail-ig0-f171.google.com ([209.85.213.171]:38893 "EHLO mail-ig0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761247AbbEEQaF (ORCPT ); Tue, 5 May 2015 12:30:05 -0400 From: Michael Welling To: jic23@kernel.org, knaack.h@gmx.de, lars@metafoo.de, pmeerw@pmeerw.net, san@rosetechnology.dk, linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org Cc: Michael Welling Subject: [PATCH] iio: mcp320x: Fix occasional incorrect readings Date: Tue, 5 May 2015 11:29:55 -0500 Message-Id: <1430843395-19446-1-git-send-email-mwelling@ieee.org> X-Mailer: git-send-email 1.7.9.5 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Without the cacheline alignment, the readings will occasionally incorrectly return 0. Signed-off-by: Michael Welling --- drivers/iio/adc/mcp320x.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/adc/mcp320x.c b/drivers/iio/adc/mcp320x.c index efbfd12..46b98cf 100644 --- a/drivers/iio/adc/mcp320x.c +++ b/drivers/iio/adc/mcp320x.c @@ -60,7 +60,7 @@ struct mcp320x { struct spi_message msg; struct spi_transfer transfer[2]; - u8 tx_buf; + u8 tx_buf ____cacheline_aligned; u8 rx_buf[2]; struct regulator *reg; -- 1.7.9.5