From patchwork Wed Jun 19 11:14:54 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Boris BREZILLON X-Patchwork-Id: 2748781 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 254F19F39E for ; Wed, 19 Jun 2013 11:46:14 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id EFAD1201B9 for ; Wed, 19 Jun 2013 11:46:12 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 71F02201B8 for ; Wed, 19 Jun 2013 11:46:11 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UpGNA-0008RR-2O; Wed, 19 Jun 2013 11:16:22 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UpGMD-0007wg-Ql; Wed, 19 Jun 2013 11:15:21 +0000 Received: from 18.mo3.mail-out.ovh.net ([87.98.172.162] helo=mo3.mail-out.ovh.net) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UpGMA-0007wG-Gl for linux-arm-kernel@lists.infradead.org; Wed, 19 Jun 2013 11:15:18 +0000 Received: from mail432.ha.ovh.net (b6.ovh.net [213.186.33.56]) by mo3.mail-out.ovh.net (Postfix) with SMTP id 1408CFF9B6B for ; Wed, 19 Jun 2013 13:14:57 +0200 (CEST) Received: from b0.ovh.net (HELO queueout) (213.186.33.50) by b0.ovh.net with SMTP; 19 Jun 2013 13:15:37 +0200 Received: from unknown (HELO bbrezillon-laptop.private.s2ih) (b.brezillon@overkiz.com@80.245.18.66) by ns0.ovh.net with SMTP; 19 Jun 2013 13:15:35 +0200 From: Boris BREZILLON To: Nicolas Ferre , Ludovic Desroches , Jean-Christophe Plagniol-Villard , Dan Williams , Vinod Koul X-Ovh-Mailout: 178.32.228.3 (mo3.mail-out.ovh.net) Subject: [PATCH 2/8] at_hdmac: prepare clk before calling enable Date: Wed, 19 Jun 2013 13:14:54 +0200 Message-Id: <1371640494-9472-1-git-send-email-b.brezillon@overkiz.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1371640263-9268-1-git-send-email-b.brezillon@overkiz.com> References: <1371640263-9268-1-git-send-email-b.brezillon@overkiz.com> X-Ovh-Tracer-Id: 10580925850895153260 X-Ovh-Remote: 80.245.18.66 () X-Ovh-Local: 213.186.33.20 (ns0.ovh.net) X-OVH-SPAMSTATE: OK X-OVH-SPAMSCORE: -100 X-OVH-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrfeeiiedrjedtucetufdoteggodetrfcurfhrohhfihhlvgemucfqggfjnecuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmd X-Spam-Check: DONE|U 0.5/N X-VR-SPAMSTATE: OK X-VR-SPAMSCORE: -100 X-VR-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrfeeiiedrjedtucetufdoteggodetrfcurfhrohhfihhlvgemucfqggfjnecuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmd X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130619_071518_690531_3724CE4E X-CRM114-Status: GOOD ( 13.65 ) X-Spam-Score: -1.9 (-) Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Boris BREZILLON X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-5.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, 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 Replace clk_enable/disable with clk_prepare_enable/disable_unprepare to avoid common clk framework warnings. Signed-off-by: Boris BREZILLON Acked-by: Nicolas Ferre --- drivers/dma/at_hdmac.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c index e923cda..19a484a 100644 --- a/drivers/dma/at_hdmac.c +++ b/drivers/dma/at_hdmac.c @@ -1374,7 +1374,9 @@ static int __init at_dma_probe(struct platform_device *pdev) err = PTR_ERR(atdma->clk); goto err_clk; } - clk_enable(atdma->clk); + err = clk_prepare_enable(atdma->clk); + if (err) + goto err_clk_prepare; /* force dma off, just in case */ at_dma_off(atdma); @@ -1475,7 +1477,8 @@ err_pool_create: platform_set_drvdata(pdev, NULL); free_irq(platform_get_irq(pdev, 0), atdma); err_irq: - clk_disable(atdma->clk); + clk_disable_unprepare(atdma->clk); +err_clk_prepare: clk_put(atdma->clk); err_clk: iounmap(atdma->regs); @@ -1512,7 +1515,7 @@ static int at_dma_remove(struct platform_device *pdev) list_del(&chan->device_node); } - clk_disable(atdma->clk); + clk_disable_unprepare(atdma->clk); clk_put(atdma->clk); iounmap(atdma->regs); @@ -1531,7 +1534,7 @@ static void at_dma_shutdown(struct platform_device *pdev) struct at_dma *atdma = platform_get_drvdata(pdev); at_dma_off(platform_get_drvdata(pdev)); - clk_disable(atdma->clk); + clk_disable_unprepare(atdma->clk); } static int at_dma_prepare(struct device *dev) @@ -1588,7 +1591,7 @@ static int at_dma_suspend_noirq(struct device *dev) /* disable DMA controller */ at_dma_off(atdma); - clk_disable(atdma->clk); + clk_disable_unprepare(atdma->clk); return 0; } @@ -1618,7 +1621,9 @@ static int at_dma_resume_noirq(struct device *dev) struct dma_chan *chan, *_chan; /* bring back DMA controller */ - clk_enable(atdma->clk); + err = clk_prepare_enable(atdma->clk); + if (err) + return err; dma_writel(atdma, EN, AT_DMA_ENABLE); /* clear any pending interrupt */