From patchwork Thu May 6 15:25:43 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mauro Carvalho Chehab X-Patchwork-Id: 432338 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 408A0C433ED for ; Thu, 6 May 2021 15:27:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 159426196E for ; Thu, 6 May 2021 15:27:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235694AbhEFP2T (ORCPT ); Thu, 6 May 2021 11:28:19 -0400 Received: from mail.kernel.org ([198.145.29.99]:41092 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235581AbhEFP1z (ORCPT ); Thu, 6 May 2021 11:27:55 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id E75AD613E8; Thu, 6 May 2021 15:26:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1620314800; bh=OywYIi5a3XqVfdfwDSr/a7KsGKnino28d76Xjqz0XV4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=D751wvuiOPx9QcShg2gaxNRgYh+dHvLZyhMhCqiu2X0Z7Y4obIHDESjR3pBMlyDoM wXo9pzZlE7LXN4Zb48UBzaocIUcSIUwWkPsnZhfpxat3KNf0RiBDFkp55QHiG7TV2r 6Zg3uFxV+pm8Y36nykGAi8W3WuKWhm6r4XUl8Wi7Tm6E8slZtCFen7dFndqFRKXJt9 CAeyyU+wAHuwXHCPgUfhqsHGFT/2HaWNSA5nR7291aQxKSFoJwq8RdheqQWe6aYfin VDar0eost/MTF3s9IK34NCvn0wqvYVO03tfXLI7L1Z4x10RN90yXyxKvAK6zl+HWMs l2gQbj91OoC6A== Received: by mail.kernel.org with local (Exim 4.94.2) (envelope-from ) id 1left7-000SBL-QF; Thu, 06 May 2021 17:26:05 +0200 From: Mauro Carvalho Chehab Cc: linuxarm@huawei.com, mauro.chehab@huawei.com, Mauro Carvalho Chehab , Dmitry Osipenko , Greg Kroah-Hartman , Jonathan Hunter , Mauro Carvalho Chehab , Thierry Reding , linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-staging@lists.linux.dev, linux-tegra@vger.kernel.org Subject: [PATCH v5 05/25] staging: media: tegra-vde: use pm_runtime_resume_and_get() Date: Thu, 6 May 2021 17:25:43 +0200 Message-Id: X-Mailer: git-send-email 2.30.2 In-Reply-To: References: MIME-Version: 1.0 Sender: Mauro Carvalho Chehab To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Commit dd8088d5a896 ("PM: runtime: Add pm_runtime_resume_and_get to deal with usage counter") added pm_runtime_resume_and_get() in order to automatically handle dev->power.usage_count decrement on errors. Use the new API, in order to cleanup the error check logic. Signed-off-by: Mauro Carvalho Chehab --- drivers/staging/media/tegra-vde/vde.c | 21 ++++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-) diff --git a/drivers/staging/media/tegra-vde/vde.c b/drivers/staging/media/tegra-vde/vde.c index 28845b5bafaf..e025b69776f2 100644 --- a/drivers/staging/media/tegra-vde/vde.c +++ b/drivers/staging/media/tegra-vde/vde.c @@ -775,9 +775,9 @@ static int tegra_vde_ioctl_decode_h264(struct tegra_vde *vde, if (ret) goto release_dpb_frames; - ret = pm_runtime_get_sync(dev); + ret = pm_runtime_resume_and_get(dev); if (ret < 0) - goto put_runtime_pm; + goto unlock; /* * We rely on the VDE registers reset value, otherwise VDE @@ -843,6 +843,8 @@ static int tegra_vde_ioctl_decode_h264(struct tegra_vde *vde, put_runtime_pm: pm_runtime_mark_last_busy(dev); pm_runtime_put_autosuspend(dev); + +unlock: mutex_unlock(&vde->lock); release_dpb_frames: @@ -1069,11 +1071,19 @@ static int tegra_vde_probe(struct platform_device *pdev) * power-cycle it in order to put hardware into a predictable lower * power state. */ - pm_runtime_get_sync(dev); + if (pm_runtime_resume_and_get(dev) < 0) + goto err_pm_runtime; + pm_runtime_put(dev); return 0; +err_pm_runtime: + misc_deregister(&vde->miscdev); + + pm_runtime_dont_use_autosuspend(dev); + pm_runtime_disable(dev); + err_deinit_iommu: tegra_vde_iommu_deinit(vde); @@ -1089,7 +1099,12 @@ static int tegra_vde_remove(struct platform_device *pdev) struct tegra_vde *vde = platform_get_drvdata(pdev); struct device *dev = &pdev->dev; + /* + * As it increments RPM usage_count even on errors, we don't need to + * check the returned code here. + */ pm_runtime_get_sync(dev); + pm_runtime_dont_use_autosuspend(dev); pm_runtime_disable(dev);