From patchwork Wed Aug 21 18:05:48 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sibi Sankar X-Patchwork-Id: 11107807 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3E22D13A4 for ; Wed, 21 Aug 2019 18:06:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1DABF214DA for ; Wed, 21 Aug 2019 18:06:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="S+ugcXV5"; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="WK0jp5Zh" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727041AbfHUSGG (ORCPT ); Wed, 21 Aug 2019 14:06:06 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:44670 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726252AbfHUSGG (ORCPT ); Wed, 21 Aug 2019 14:06:06 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 3BD7460DB4; Wed, 21 Aug 2019 18:06:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1566410766; bh=CaM47E+jHxWdx1PakdsEDGXID3inWAqQsaFwjMJf4v0=; h=From:To:Cc:Subject:Date:From; b=S+ugcXV59A0Tq0WoK+ytc/Vq0BdlyWOdm0Mx0CckJRHyhDjkDbIQw+hbV74rgNfh6 q1t3trCcr/x4eCwY2dmUR+eyYiCyu1aZqaHcjIeHvDU77c2OFLZuTiwLuztcWlg/Vm NfPb//s7c8CxMOxh4oeIKFMg0ZPVZ6flsIlP2c3Y= X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on pdx-caf-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.7 required=2.0 tests=ALL_TRUSTED,BAYES_00, DKIM_INVALID,DKIM_SIGNED,SPF_NONE autolearn=no autolearn_force=no version=3.4.0 Received: from blr-ubuntu-87.qualcomm.com (blr-bdr-fw-01_globalnat_allzones-outside.qualcomm.com [103.229.18.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: sibis@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id E177A608CC; Wed, 21 Aug 2019 18:06:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1566410765; bh=CaM47E+jHxWdx1PakdsEDGXID3inWAqQsaFwjMJf4v0=; h=From:To:Cc:Subject:Date:From; b=WK0jp5Zhu2nANQYLeEK7xT2m/qQZktsGf/NyHxylJkraBXhBiRwxdYL8GJIO24C9w JgCnFEQMxqdSgIqw9T0Z6Ar96+PwGKmN+4sUGpsttNVC8QJ+fShqi2EVKQ/HfkNN5l EoCE5YwxYk0u0NgPqn3+KoeBBy4sag54OxtMnb2w= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org E177A608CC Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=sibis@codeaurora.org From: Sibi Sankar To: bjorn.andersson@linaro.org Cc: agross@kernel.org, ohad@wizery.com, linux-arm-msm@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, rnayak@codeaurora.org, Sibi Sankar Subject: [PATCH] remoteproc: qcom: q6v5-mss: fixup q6v5_pds_enable error handling Date: Wed, 21 Aug 2019 23:35:48 +0530 Message-Id: <20190821180548.9458-1-sibis@codeaurora.org> X-Mailer: git-send-email 2.22.1 MIME-Version: 1.0 Sender: linux-remoteproc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org dev_pm_domain_attach_by_name will return NULL if the requested power-domain is not a part device node. This could result in NULL pointer de-reference in q6v5_pds_enable. Fix this by checking for IS_ERR_OR_NULL and forward the appropriate error code. Fixes: 4760a896be88e ("remoteproc: q6v5-mss: Vote for rpmh power domains") Signed-off-by: Sibi Sankar --- drivers/remoteproc/qcom_q6v5_mss.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c index 8fcf9d28dd731..de919f2e8b949 100644 --- a/drivers/remoteproc/qcom_q6v5_mss.c +++ b/drivers/remoteproc/qcom_q6v5_mss.c @@ -1282,8 +1282,8 @@ static int q6v5_pds_attach(struct device *dev, struct device **devs, for (i = 0; i < num_pds; i++) { devs[i] = dev_pm_domain_attach_by_name(dev, pd_names[i]); - if (IS_ERR(devs[i])) { - ret = PTR_ERR(devs[i]); + if (IS_ERR_OR_NULL(devs[i])) { + ret = PTR_ERR(devs[i]) ? : -ENODATA; goto unroll_attach; } }