From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755273Ab3ADRQR (ORCPT ); Fri, 4 Jan 2013 12:16:17 -0500 Received: from opensource.wolfsonmicro.com ([80.75.67.52]:39351 "EHLO opensource.wolfsonmicro.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755079Ab3ADRQQ (ORCPT ); Fri, 4 Jan 2013 12:16:16 -0500 From: Mark Brown To: Samuel Ortiz Cc: linux-kernel@vger.kernel.org, patches@opensource.wolfsonmicro.com, Mark Brown Subject: [PATCH] mfd: arizona: Check errors from regcache_sync() Date: Fri, 4 Jan 2013 17:16:12 +0000 Message-Id: <1357319772-11347-1-git-send-email-broonie@opensource.wolfsonmicro.com> X-Mailer: git-send-email 1.7.10.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If the control bus is unrelabile we may hit errors during regcache_sync(), especially given that it tends to be one the most dense bursts of I/O in many systems. Signed-off-by: Mark Brown --- drivers/mfd/arizona-core.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/mfd/arizona-core.c b/drivers/mfd/arizona-core.c index 2281e80..f8738aa 100644 --- a/drivers/mfd/arizona-core.c +++ b/drivers/mfd/arizona-core.c @@ -239,7 +239,12 @@ static int arizona_runtime_resume(struct device *dev) return ret; } - regcache_sync(arizona->regmap); + ret = regcache_sync(arizona->regmap); + if (ret != 0) { + dev_err(arizona->dev, "Failed to restore register cache\n"); + regulator_disable(arizona->dcvdd); + return ret; + } return 0; } -- 1.7.10.4