From mboxrd@z Thu Jan 1 00:00:00 1970 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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 E38FAC433F5 for ; Thu, 9 Sep 2021 13:39:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C0625611C9 for ; Thu, 9 Sep 2021 13:39:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1347865AbhIINkv (ORCPT ); Thu, 9 Sep 2021 09:40:51 -0400 Received: from mail.kernel.org ([198.145.29.99]:59100 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1356711AbhIIMzm (ORCPT ); Thu, 9 Sep 2021 08:55:42 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id CCE8163259; Thu, 9 Sep 2021 11:58:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1631188696; bh=bbwQ7qaaek0b1eGHS5zbSzr0sQq1cumGAQxaFHr5mcc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gduyxzLiaSrhds+fM8KxHIgUBpi4BaPql133RXHxlJ1U2LXUmpn/nThzly1jA3opJ Gc69lw2jSiyOZXcq0G9TWWZO2DWcx1ugllOfnq6939Ag4kW+N2L9nHPFi7pg1qTcO2 cO+70HvAD3zteWO74FUtDa1H1IgBg+WfEEmoxVREtEE2wZ0NpP+BMDJa/Teu30ZSaH XOSZ65YJiGyQdWFB7sQtYg0G4GKJpRxTPx3vqUDzQueaPT7pDUunA+8tGfFSPlW10d cBX8UXOPjejarSkwW0XB3vjMMmwTPO+c73zRPQSh7qH1zcLf7pcetru+wRGx4slk1Y 27c3mJ/wIHhVQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Evgeny Novikov , Hans Verkuil , Mauro Carvalho Chehab , Sasha Levin , linux-media@vger.kernel.org, linux-tegra@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 40/74] media: tegra-cec: Handle errors of clk_prepare_enable() Date: Thu, 9 Sep 2021 07:56:52 -0400 Message-Id: <20210909115726.149004-40-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210909115726.149004-1-sashal@kernel.org> References: <20210909115726.149004-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Evgeny Novikov [ Upstream commit 38367073c796a37a61549b1f66a71b3adb03802d ] tegra_cec_probe() and tegra_cec_resume() ignored possible errors of clk_prepare_enable(). The patch fixes this. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Evgeny Novikov Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- drivers/media/platform/tegra-cec/tegra_cec.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/media/platform/tegra-cec/tegra_cec.c b/drivers/media/platform/tegra-cec/tegra_cec.c index aba488cd0e64..a2c20ca799c4 100644 --- a/drivers/media/platform/tegra-cec/tegra_cec.c +++ b/drivers/media/platform/tegra-cec/tegra_cec.c @@ -383,7 +383,11 @@ static int tegra_cec_probe(struct platform_device *pdev) return -ENOENT; } - clk_prepare_enable(cec->clk); + ret = clk_prepare_enable(cec->clk); + if (ret) { + dev_err(&pdev->dev, "Unable to prepare clock for CEC\n"); + return ret; + } /* set context info. */ cec->dev = &pdev->dev; @@ -462,9 +466,7 @@ static int tegra_cec_resume(struct platform_device *pdev) dev_notice(&pdev->dev, "Resuming\n"); - clk_prepare_enable(cec->clk); - - return 0; + return clk_prepare_enable(cec->clk); } #endif -- 2.30.2