From patchwork Wed Jan 18 00:30:00 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Javier Martinez Canillas X-Patchwork-Id: 9522335 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id B6E676043D for ; Wed, 18 Jan 2017 00:30:45 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A4A7C28481 for ; Wed, 18 Jan 2017 00:30:45 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 993392857C; Wed, 18 Jan 2017 00:30:45 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id DD3D028481 for ; Wed, 18 Jan 2017 00:30:44 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1cTe9B-000887-Qh; Wed, 18 Jan 2017 00:30:41 +0000 Received: from ec2-52-27-115-49.us-west-2.compute.amazonaws.com ([52.27.115.49] helo=osg.samsung.com) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1cTe98-0007wI-5d for linux-arm-kernel@lists.infradead.org; Wed, 18 Jan 2017 00:30:39 +0000 Received: from localhost (localhost [127.0.0.1]) by osg.samsung.com (Postfix) with ESMTP id 6D5CFA1314; Wed, 18 Jan 2017 00:30:32 +0000 (UTC) X-Virus-Scanned: amavisd-new at osg.samsung.com Received: from osg.samsung.com ([127.0.0.1]) by localhost (s-opensource.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id dnexMpw5HniG; Wed, 18 Jan 2017 00:30:31 +0000 (UTC) Received: from minerva.localdomain (unknown [181.121.136.80]) by osg.samsung.com (Postfix) with ESMTPSA id 4D69FA0DE2; Wed, 18 Jan 2017 00:30:25 +0000 (UTC) From: Javier Martinez Canillas To: linux-kernel@vger.kernel.org Subject: [PATCH 1/2] [media] exynos-gsc: Fix unbalanced pm_runtime_enable() error Date: Tue, 17 Jan 2017 21:30:00 -0300 Message-Id: <1484699402-28738-1-git-send-email-javier@osg.samsung.com> X-Mailer: git-send-email 2.7.4 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170117_163038_254235_C15383C4 X-CRM114-Status: UNSURE ( 9.13 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Ulf Hansson , linux-samsung-soc@vger.kernel.org, linux-media@vger.kernel.org, Shuah Khan , Andi Shyti , Inki Dae , Javier Martinez Canillas , Kukjin Kim , Krzysztof Kozlowski , Sylwester Nawrocki , Mauro Carvalho Chehab , linux-arm-kernel@lists.infradead.org, Marek Szyprowski MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Commit a006c04e6218 ("[media] exynos-gsc: Fixup clock management at ->remove()") changed the driver's .remove function logic to fist do a pm_runtime_get_sync() to make sure the device is powered before attempting to gate the gsc clock. But the commit also removed a pm_runtime_disable() call that leads to an unbalanced pm_runtime_enable() error if the driver is removed and re-probed: exynos-gsc 13e00000.video-scaler: Unbalanced pm_runtime_enable! exynos-gsc 13e10000.video-scaler: Unbalanced pm_runtime_enable! Fixes: a006c04e6218 ("[media] exynos-gsc: Fixup clock management at ->remove()") Signed-off-by: Javier Martinez Canillas Acked-by: Marek Szyprowski --- drivers/media/platform/exynos-gsc/gsc-core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/media/platform/exynos-gsc/gsc-core.c b/drivers/media/platform/exynos-gsc/gsc-core.c index cbf75b6194b4..83272f10722d 100644 --- a/drivers/media/platform/exynos-gsc/gsc-core.c +++ b/drivers/media/platform/exynos-gsc/gsc-core.c @@ -1118,6 +1118,7 @@ static int gsc_remove(struct platform_device *pdev) clk_disable_unprepare(gsc->clock[i]); pm_runtime_put_noidle(&pdev->dev); + pm_runtime_disable(&pdev->dev); dev_dbg(&pdev->dev, "%s driver unloaded\n", pdev->name); return 0;