From patchwork Wed Sep 24 08:56:59 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bo Shen X-Patchwork-Id: 4963081 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 0E7339F32B for ; Wed, 24 Sep 2014 08:59:49 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id EF0A02026C for ; Wed, 24 Sep 2014 08:59:47 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8C4FE20173 for ; Wed, 24 Sep 2014 08:59:45 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1XWiOA-0006JI-Ik; Wed, 24 Sep 2014 08:57:30 +0000 Received: from nasmtp01.atmel.com ([192.199.1.245] helo=DVREDG01.corp.atmel.com) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1XWiO7-0006Fw-Tn for linux-arm-kernel@lists.infradead.org; Wed, 24 Sep 2014 08:57:28 +0000 Received: from sjogate2.atmel.com (10.42.103.223) by DVREDG01.corp.atmel.com (10.42.103.30) with Microsoft SMTP Server id 14.2.347.0; Wed, 24 Sep 2014 02:57:01 -0600 Received: from localhost.localdomain ([10.217.12.46]) by sjogate2.atmel.com (8.13.6/8.13.6) with ESMTP id s8O8uiTp007432; Wed, 24 Sep 2014 01:56:45 -0700 (PDT) From: Bo Shen To: Mark Brown Subject: [PATCH] misc: atmel-ssc: prepare clock only when request Date: Wed, 24 Sep 2014 16:56:59 +0800 Message-ID: <1411549019-12663-1-git-send-email-voice.shen@atmel.com> X-Mailer: git-send-email 2.1.0.24.g4109c28 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140924_015727_985444_893F87DB X-CRM114-Status: UNSURE ( 8.17 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.7 (/) Cc: boris.brezillon@free-electrons.com, Bo Shen , nicolas.ferre@atmel.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Prepare SSC clock only when request SSC channel, the clock will be enabled when initialize the SSC. Signed-off-by: Bo Shen --- drivers/misc/atmel-ssc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/misc/atmel-ssc.c b/drivers/misc/atmel-ssc.c index 60843a2..f9807a7 100644 --- a/drivers/misc/atmel-ssc.c +++ b/drivers/misc/atmel-ssc.c @@ -57,7 +57,7 @@ struct ssc_device *ssc_request(unsigned int ssc_num) ssc->user++; spin_unlock(&user_lock); - clk_prepare_enable(ssc->clk); + clk_prepare(ssc->clk); return ssc; } @@ -77,7 +77,7 @@ void ssc_free(struct ssc_device *ssc) spin_unlock(&user_lock); if (disable_clk) - clk_disable_unprepare(ssc->clk); + clk_unprepare(ssc->clk); } EXPORT_SYMBOL(ssc_free);