From patchwork Mon Jul 19 14:52:34 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "gregkh@linuxfoundation.org" X-Patchwork-Id: 480937 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=-20.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, 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 3DD48C07E9B for ; Mon, 19 Jul 2021 15:44:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 23E3661363 for ; Mon, 19 Jul 2021 15:44:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344836AbhGSPD0 (ORCPT ); Mon, 19 Jul 2021 11:03:26 -0400 Received: from mail.kernel.org ([198.145.29.99]:59810 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345142AbhGSPBf (ORCPT ); Mon, 19 Jul 2021 11:01:35 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 8D85260238; Mon, 19 Jul 2021 15:42:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1626709335; bh=DzsBD/kyy/iw7660HipZkUBCf2tXw1/RPJy8yl4d+Jo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=iagzEP2gzdNrRufkbbAl58ykevZ4tM4FqvHAB3gtAoBO/bpzsHap1brtecNh2nJcO JyoeSXb41yTu8s6UcP/eoG3YL/Tf3CfZK0UuiDtqobhbxoXQ75apqaGc1B1v8nR+Jp 14kf9/mRdilBQ+Ag91IJ6YBkzcmrZjbczgSL5GT8= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Srinivas Neeli , Bartosz Golaszewski , Sasha Levin Subject: [PATCH 4.19 343/421] gpio: zynq: Check return value of pm_runtime_get_sync Date: Mon, 19 Jul 2021 16:52:34 +0200 Message-Id: <20210719144958.189595903@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210719144946.310399455@linuxfoundation.org> References: <20210719144946.310399455@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Srinivas Neeli [ Upstream commit a51b2fb94b04ab71e53a71b9fad03fa826941254 ] Return value of "pm_runtime_get_sync" API was neither captured nor checked. Fixed it by capturing the return value and then checking for any warning. Addresses-Coverity: "check_return" Signed-off-by: Srinivas Neeli Signed-off-by: Bartosz Golaszewski Signed-off-by: Sasha Levin --- drivers/gpio/gpio-zynq.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpio/gpio-zynq.c b/drivers/gpio/gpio-zynq.c index 5dec96155814..c2279b28bcb9 100644 --- a/drivers/gpio/gpio-zynq.c +++ b/drivers/gpio/gpio-zynq.c @@ -919,8 +919,11 @@ err_pm_dis: static int zynq_gpio_remove(struct platform_device *pdev) { struct zynq_gpio *gpio = platform_get_drvdata(pdev); + int ret; - pm_runtime_get_sync(&pdev->dev); + ret = pm_runtime_get_sync(&pdev->dev); + if (ret < 0) + dev_warn(&pdev->dev, "pm_runtime_get_sync() Failed\n"); gpiochip_remove(&gpio->chip); clk_disable_unprepare(gpio->clk); device_set_wakeup_capable(&pdev->dev, 0);