From patchwork Thu Mar 21 12:09:59 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mika Westerberg X-Patchwork-Id: 229644 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id DE6542C00BE for ; Thu, 21 Mar 2013 23:09:41 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932121Ab3CUMJS (ORCPT ); Thu, 21 Mar 2013 08:09:18 -0400 Received: from mga14.intel.com ([143.182.124.37]:42847 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754899Ab3CUMIT (ORCPT ); Thu, 21 Mar 2013 08:08:19 -0400 Received: from azsmga002.ch.intel.com ([10.2.17.35]) by azsmga102.ch.intel.com with ESMTP; 21 Mar 2013 05:08:18 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.84,884,1355126400"; d="scan'208";a="217320619" Received: from blue.fi.intel.com ([10.237.72.156]) by AZSMGA002.ch.intel.com with ESMTP; 21 Mar 2013 05:08:16 -0700 Received: by blue.fi.intel.com (Postfix, from userid 1004) id D34D6E008C; Thu, 21 Mar 2013 14:10:00 +0200 (EET) From: Mika Westerberg To: linux-kernel@vger.kernel.org Cc: linux-i2c@vger.kernel.org, Wolfram Sang , ben-linux@fluff.org, Jean Delvare , Andy Shevchenko , Christian Ruppert , Mika Westerberg Subject: [PATCH 6/7] i2c-designware: use usleep_range() in the busy-loop Date: Thu, 21 Mar 2013 14:09:59 +0200 Message-Id: <1363867800-23861-6-git-send-email-mika.westerberg@linux.intel.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1363867800-23861-1-git-send-email-mika.westerberg@linux.intel.com> References: <1363867800-23861-1-git-send-email-mika.westerberg@linux.intel.com> Sender: linux-i2c-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org This is not an atomic context so there is no need to use mdelay() but instead use usleep_range(). Signed-off-by: Mika Westerberg --- drivers/i2c/busses/i2c-designware-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-designware-core.c b/drivers/i2c/busses/i2c-designware-core.c index 0e4f531..0849648 100644 --- a/drivers/i2c/busses/i2c-designware-core.c +++ b/drivers/i2c/busses/i2c-designware-core.c @@ -350,7 +350,7 @@ static int i2c_dw_wait_bus_not_busy(struct dw_i2c_dev *dev) return -ETIMEDOUT; } timeout--; - mdelay(1); + usleep_range(1000, 1100); } return 0;