From patchwork Mon Oct 13 14:02:07 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ulf Hansson X-Patchwork-Id: 5076751 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 05ED7C11AC for ; Mon, 13 Oct 2014 14:07:17 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 317F62021A for ; Mon, 13 Oct 2014 14:07:15 +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 3EF422020E for ; Mon, 13 Oct 2014 14:07:14 +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 1XdgEV-0008Ad-6F; Mon, 13 Oct 2014 14:04:19 +0000 Received: from mail-wg0-f52.google.com ([74.125.82.52]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1XdgDJ-0007VT-7i for linux-arm-kernel@lists.infradead.org; Mon, 13 Oct 2014 14:03:06 +0000 Received: by mail-wg0-f52.google.com with SMTP id a1so8601056wgh.11 for ; Mon, 13 Oct 2014 07:02:43 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=S5bIjZOiYu0ypatf7Z+KEmTU/hSl58f3u1ba/Kim4M0=; b=NPzXR6R0slDmOM/Q41Lsk5FUqngYOEG4dtoIdMDnKpnpyYvq7pYvYJunj4eUh2JZi9 HshPE/lKjsxZnbvqlFrnVdnE0ksZDte/JcozqnIS5NtSS0nmDSGYp+uziVje4LOv7/+5 1BlRn0nnO7fR3r10WHErDawMRqbe+ml9ijF6K1kJTmiRkhYgUNEV92BkxQk8TDSMhXX5 6rwOhAoyHPjN1PYpjjJFWXkqXZFxqZap5hg2g6IsVfoEcMC7Leeg1Bw73Q8LZdBk1xsI aOx7vuqtmPVkuykhH1EBGmdWLJ/JWEm6w9x7kH/5tWydDYi5Vf04YOnfAQv+Da+iYuaQ 2rtA== X-Gm-Message-State: ALoCoQlIxwfmfwKx7MEwk47P3z6EJqcaetN7K4XD4An1VR8mEXJhMirsHRotuKr/JnMU8XA8Gs72 X-Received: by 10.194.237.164 with SMTP id vd4mr20569843wjc.46.1413208962498; Mon, 13 Oct 2014 07:02:42 -0700 (PDT) Received: from localhost.localdomain ([85.235.11.236]) by mx.google.com with ESMTPSA id fq1sm1533474wib.12.2014.10.13.07.02.40 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 13 Oct 2014 07:02:41 -0700 (PDT) From: Ulf Hansson To: "Rafael J. Wysocki" , Len Brown , Pavel Machek , linux-pm@vger.kernel.org Subject: [PATCH v3 6/9] spi: core: Keep PM domain powered during ->probe() Date: Mon, 13 Oct 2014 16:02:07 +0200 Message-Id: <1413208930-26019-7-git-send-email-ulf.hansson@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1413208930-26019-1-git-send-email-ulf.hansson@linaro.org> References: <1413208930-26019-1-git-send-email-ulf.hansson@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20141013_070305_554038_4BF2F68D X-CRM114-Status: GOOD ( 12.89 ) X-Spam-Score: -0.7 (/) Cc: Simon Horman , Ulf Hansson , Kevin Hilman , Russell King , Philipp Zabel , Geert Uytterhoeven , Wolfram Sang , Greg Kroah-Hartman , Mark Brown , Dmitry Torokhov , Magnus Damm , Tomasz Figa , linux-samsung-soc@vger.kernel.org, Alan Stern , Ben Dooks , Jinkun Hong , Kukjin Kim , Sylwester Nawrocki , Aaron Lu , Jack Dai , 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: , 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=-1.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE, T_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 To sucessfully probe some devices their corresponding PM domains may need to be powered. Use the dev_pm_domain_get|put() APIs, to control the behavior of the PM domain. Signed-off-by: Ulf Hansson --- drivers/spi/spi.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 3907f14..ad1a6f3 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -267,7 +267,14 @@ static int spi_drv_probe(struct device *dev) ret = dev_pm_domain_attach(dev, true); if (ret != -EPROBE_DEFER) { + ret = dev_pm_domain_get(dev->pm_domain); + if (ret) { + dev_pm_domain_detach(dev, true); + return ret; + } + ret = sdrv->probe(to_spi_device(dev)); + dev_pm_domain_put(dev->pm_domain); if (ret) dev_pm_domain_detach(dev, true); }