From patchwork Thu Aug 20 09:21:24 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 265731 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=-12.8 required=3.0 tests=BAYES_00,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 EB5B4C433DF for ; Thu, 20 Aug 2020 10:11:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B064820724 for ; Thu, 20 Aug 2020 10:11:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597918268; bh=aeLfuVpLgVSSDjcYFpoynPBNATote49CgUOoOfMWA3s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=mSdbZW7WkWdUYozLivgUtaMHO71JyLnV19TIWnqUQuhbHWBVADXN8EZRGbr+NQbIV jgVLvH5keFTbZ3X4XJL0T+1SXncefDKRc9r4CYWQe9aCpPrz7L8eK7QzDLAbFMUMC2 hbKBn9q2bGcIgRRacU15YfaQ+x3aE/Ob5eMo0EG8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730937AbgHTKLH (ORCPT ); Thu, 20 Aug 2020 06:11:07 -0400 Received: from mail.kernel.org ([198.145.29.99]:49092 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730291AbgHTKLF (ORCPT ); Thu, 20 Aug 2020 06:11:05 -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 A87AB2067C; Thu, 20 Aug 2020 10:11:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597918265; bh=aeLfuVpLgVSSDjcYFpoynPBNATote49CgUOoOfMWA3s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Sdj77wxHcZV5fOLHzzeDGZhHqZsTpq7R37nfOEa/f9ceIpjhU/Kt21pF7cITEJ1E3 LA87EYStRpl5H0jfVxMVt2Fd7F8n0Be8VXNrg7gg7l8aYBsdszw03Qyym1H3aV5tmW fv3f8yriDAnzJAHXktE6R9JxtWxcYDWS8wd0FC70= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Marco Felsch , Philipp Zabel , Sasha Levin Subject: [PATCH 4.14 109/228] drm/imx: tve: fix regulator_disable error path Date: Thu, 20 Aug 2020 11:21:24 +0200 Message-Id: <20200820091613.046756077@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200820091607.532711107@linuxfoundation.org> References: <20200820091607.532711107@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: Marco Felsch [ Upstream commit 7bb58b987fee26da2a1665c01033022624986b7c ] Add missing regulator_disable() as devm_action to avoid dedicated unbind() callback and fix the missing error handling. Fixes: fcbc51e54d2a ("staging: drm/imx: Add support for Television Encoder (TVEv2)") Signed-off-by: Marco Felsch Signed-off-by: Philipp Zabel Signed-off-by: Sasha Levin --- drivers/gpu/drm/imx/imx-tve.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/imx/imx-tve.c b/drivers/gpu/drm/imx/imx-tve.c index bc27c26994641..c22c3e6e9b7ac 100644 --- a/drivers/gpu/drm/imx/imx-tve.c +++ b/drivers/gpu/drm/imx/imx-tve.c @@ -498,6 +498,13 @@ static int imx_tve_register(struct drm_device *drm, struct imx_tve *tve) return 0; } +static void imx_tve_disable_regulator(void *data) +{ + struct imx_tve *tve = data; + + regulator_disable(tve->dac_reg); +} + static bool imx_tve_readable_reg(struct device *dev, unsigned int reg) { return (reg % 4 == 0) && (reg <= 0xdc); @@ -622,6 +629,9 @@ static int imx_tve_bind(struct device *dev, struct device *master, void *data) ret = regulator_enable(tve->dac_reg); if (ret) return ret; + ret = devm_add_action_or_reset(dev, imx_tve_disable_regulator, tve); + if (ret) + return ret; } tve->clk = devm_clk_get(dev, "tve"); @@ -668,18 +678,8 @@ static int imx_tve_bind(struct device *dev, struct device *master, void *data) return 0; } -static void imx_tve_unbind(struct device *dev, struct device *master, - void *data) -{ - struct imx_tve *tve = dev_get_drvdata(dev); - - if (!IS_ERR(tve->dac_reg)) - regulator_disable(tve->dac_reg); -} - static const struct component_ops imx_tve_ops = { .bind = imx_tve_bind, - .unbind = imx_tve_unbind, }; static int imx_tve_probe(struct platform_device *pdev)