From patchwork Tue Apr 28 18:23:48 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "gregkh@linuxfoundation.org" X-Patchwork-Id: 226935 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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 1B883C83000 for ; Tue, 28 Apr 2020 18:29:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F187520B1F for ; Tue, 28 Apr 2020 18:29:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588098573; bh=9TDw9yuVJzxDpPiNYhrOdUb18Ovrfl5nqHEqUdzq4q0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=eI6cy4Jw7Ivm98L1pR4CEXc+RCT4Xv+iQypwVFrD2i98qR1vWW+c0Q4P0qOyeCAQf ewTrCriX07bBxIsfVxSC/6enYan6tO2rifFzirwFav/eb+93SowNyD2NuQ4a7kY3QL z2nVlKLT/1x3/BYib308LJHdu3iJ2MJZdaPBg5n0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729365AbgD1S3c (ORCPT ); Tue, 28 Apr 2020 14:29:32 -0400 Received: from mail.kernel.org ([198.145.29.99]:43244 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729349AbgD1S3b (ORCPT ); Tue, 28 Apr 2020 14:29:31 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 2BB7020730; Tue, 28 Apr 2020 18:29:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588098570; bh=9TDw9yuVJzxDpPiNYhrOdUb18Ovrfl5nqHEqUdzq4q0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tG2sgazYd9Q1q1YxxF2SknhdfuOYv6xk7DErmCeKatztm4paxV4FpIZKZz/H9kzbI 10NbodABr4GuC2lFTGYQko6wg2l/jEkNNHFlIC13fuptQqsRc4rwny2o0XAKBz29cE XYlEmk5mmTUcvEYNgjvDtF05qTNE7zy8Q8jJTQRo= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Geert Uytterhoeven , =?utf-8?q?Uwe_Kleine-K?= =?utf-8?b?w7ZuaWc=?= , Laurent Pinchart , Thierry Reding , Sasha Levin Subject: [PATCH 4.19 016/131] pwm: rcar: Fix late Runtime PM enablement Date: Tue, 28 Apr 2020 20:23:48 +0200 Message-Id: <20200428182227.199620407@linuxfoundation.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200428182224.822179290@linuxfoundation.org> References: <20200428182224.822179290@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Geert Uytterhoeven [ Upstream commit 1451a3eed24b5fd6a604683f0b6995e0e7e16c79 ] Runtime PM should be enabled before calling pwmchip_add(), as PWM users can appear immediately after the PWM chip has been added. Likewise, Runtime PM should be disabled after the removal of the PWM chip. Fixes: ed6c1476bf7f16d5 ("pwm: Add support for R-Car PWM Timer") Signed-off-by: Geert Uytterhoeven Reviewed-by: Uwe Kleine-König Reviewed-by: Laurent Pinchart Signed-off-by: Thierry Reding Signed-off-by: Sasha Levin --- drivers/pwm/pwm-rcar.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/pwm/pwm-rcar.c b/drivers/pwm/pwm-rcar.c index 748f614d53755..b7d71bf297d69 100644 --- a/drivers/pwm/pwm-rcar.c +++ b/drivers/pwm/pwm-rcar.c @@ -232,24 +232,28 @@ static int rcar_pwm_probe(struct platform_device *pdev) rcar_pwm->chip.base = -1; rcar_pwm->chip.npwm = 1; + pm_runtime_enable(&pdev->dev); + ret = pwmchip_add(&rcar_pwm->chip); if (ret < 0) { dev_err(&pdev->dev, "failed to register PWM chip: %d\n", ret); + pm_runtime_disable(&pdev->dev); return ret; } - pm_runtime_enable(&pdev->dev); - return 0; } static int rcar_pwm_remove(struct platform_device *pdev) { struct rcar_pwm_chip *rcar_pwm = platform_get_drvdata(pdev); + int ret; + + ret = pwmchip_remove(&rcar_pwm->chip); pm_runtime_disable(&pdev->dev); - return pwmchip_remove(&rcar_pwm->chip); + return ret; } static const struct of_device_id rcar_pwm_of_table[] = {