From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752843AbaIKIUI (ORCPT ); Thu, 11 Sep 2014 04:20:08 -0400 Received: from cnbjrel02.sonyericsson.com ([219.141.167.166]:14222 "EHLO cnbjrel02.sonyericsson.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751410AbaIKIUC convert rfc822-to-8bit (ORCPT ); Thu, 11 Sep 2014 04:20:02 -0400 From: "Wang, Yalin" To: "'broonie@kernel.org'" , "'linux-driver@qlogic.com'" , "'linux-kernel@vger.kernel.org'" , "'linux-arm-kernel@lists.infradead.org'" , "'linux@arm.linux.org.uk'" Date: Thu, 11 Sep 2014 16:19:49 +0800 Subject: [PATCH] regmap:change struct regmap's internal locks as union Thread-Topic: [PATCH] regmap:change struct regmap's internal locks as union Thread-Index: Ac/NmSfIko22QWRERAaJ/i5dugB5tw== Message-ID: <35FD53F367049845BC99AC72306C23D103CDBFBFB01A@CNBJMBX05.corpusers.net> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org this patch change struct regmap->mutex and struct regmap->spinlock as an union, because these 2 members are only used one of them, we change it to shrink the struct size. Signed-off-by: Yalin Wang --- drivers/base/regmap/internal.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h index bfc90b8..0da5865 100644 --- a/drivers/base/regmap/internal.h +++ b/drivers/base/regmap/internal.h @@ -49,8 +49,10 @@ struct regmap_async { }; struct regmap { - struct mutex mutex; - spinlock_t spinlock; + union { + struct mutex mutex; + spinlock_t spinlock; + }; unsigned long spinlock_flags; regmap_lock lock; regmap_unlock unlock; -- 2.1.0