From patchwork Thu Aug 6 03:45:01 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mansur Alisha Shaik X-Patchwork-Id: 250758 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=-13.0 required=3.0 tests=BAYES_00, 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 84065C433E0 for ; Thu, 6 Aug 2020 03:45:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 581C7206D4 for ; Thu, 6 Aug 2020 03:45:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727792AbgHFDpW (ORCPT ); Wed, 5 Aug 2020 23:45:22 -0400 Received: from alexa-out.qualcomm.com ([129.46.98.28]:48070 "EHLO alexa-out.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727077AbgHFDpW (ORCPT ); Wed, 5 Aug 2020 23:45:22 -0400 Received: from ironmsg08-lv.qualcomm.com ([10.47.202.152]) by alexa-out.qualcomm.com with ESMTP; 05 Aug 2020 20:45:22 -0700 Received: from ironmsg01-blr.qualcomm.com ([10.86.208.130]) by ironmsg08-lv.qualcomm.com with ESMTP/TLS/AES256-SHA; 05 Aug 2020 20:45:20 -0700 Received: from c-mansur-linux.qualcomm.com ([10.204.90.208]) by ironmsg01-blr.qualcomm.com with ESMTP; 06 Aug 2020 09:15:08 +0530 Received: by c-mansur-linux.qualcomm.com (Postfix, from userid 461723) id 090D921C5C; Thu, 6 Aug 2020 09:15:06 +0530 (IST) From: Mansur Alisha Shaik To: linux-media@vger.kernel.org, stanimir.varbanov@linaro.org Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, vgarodia@codeaurora.org, Mansur Alisha Shaik Subject: [PATCH V2] venus: core: add shutdown callback for venus Date: Thu, 6 Aug 2020 09:15:01 +0530 Message-Id: <1596685501-4392-1-git-send-email-mansur@codeaurora.org> X-Mailer: git-send-email 2.7.4 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org After the SMMU translation is disabled in the arm-smmu shutdown callback during reboot, if any subsystem are still alive then IOVAs they are using will become PAs on bus, which may lead to crash. Below are the consumers of smmu from venus arm-smmu: consumer: aa00000.video-codec supplier=15000000.iommu arm-smmu: consumer: video-firmware.0 supplier=15000000.iommu So implemented shutdown callback, which detach iommu maps. Change-Id: I0f0f331056e0b84b92f1d86f66618d4b1caaa24a Signed-off-by: Mansur Alisha Shaik Reported-by: kernel test robot --- drivers/media/platform/qcom/venus/core.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/media/platform/qcom/venus/core.c b/drivers/media/platform/qcom/venus/core.c index 203c653..92aac06 100644 --- a/drivers/media/platform/qcom/venus/core.c +++ b/drivers/media/platform/qcom/venus/core.c @@ -341,6 +341,16 @@ static int venus_remove(struct platform_device *pdev) return ret; } +static void venus_core_shutdown(struct platform_device *pdev) +{ + struct venus_core *core = platform_get_drvdata(pdev); + int ret; + + ret = venus_remove(pdev); + if(ret) + dev_warn(core->dev, "shutdown failed \n", ret); +} + static __maybe_unused int venus_runtime_suspend(struct device *dev) { struct venus_core *core = dev_get_drvdata(dev); @@ -592,6 +602,7 @@ static struct platform_driver qcom_venus_driver = { .of_match_table = venus_dt_match, .pm = &venus_pm_ops, }, + .shutdown = venus_core_shutdown, }; module_platform_driver(qcom_venus_driver);