From patchwork Wed Apr 10 10:36:41 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mika Westerberg X-Patchwork-Id: 235353 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 C74B72C00C0 for ; Wed, 10 Apr 2013 20:34:50 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S937173Ab3DJKet (ORCPT ); Wed, 10 Apr 2013 06:34:49 -0400 Received: from mga11.intel.com ([192.55.52.93]:63542 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S937154Ab3DJKer (ORCPT ); Wed, 10 Apr 2013 06:34:47 -0400 Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga102.fm.intel.com with ESMTP; 10 Apr 2013 03:34:46 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.87,445,1363158000"; d="scan'208";a="320238862" Received: from blue.fi.intel.com ([10.237.72.156]) by fmsmga002.fm.intel.com with ESMTP; 10 Apr 2013 03:34:44 -0700 Received: by blue.fi.intel.com (Postfix, from userid 1004) id 80722E008C; Wed, 10 Apr 2013 13:36:42 +0300 (EEST) 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 v2 6/7] i2c-designware: use usleep_range() in the busy-loop Date: Wed, 10 Apr 2013 13:36:41 +0300 Message-Id: <1365590202-1623-6-git-send-email-mika.westerberg@linux.intel.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1365590202-1623-1-git-send-email-mika.westerberg@linux.intel.com> References: <1365590202-1623-1-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 5cc4ebf..7c10c5b 100644 --- a/drivers/i2c/busses/i2c-designware-core.c +++ b/drivers/i2c/busses/i2c-designware-core.c @@ -355,7 +355,7 @@ static int i2c_dw_wait_bus_not_busy(struct dw_i2c_dev *dev) return -ETIMEDOUT; } timeout--; - mdelay(1); + usleep_range(1000, 1100); } return 0;