Received: by 2002:a05:6a10:8c0a:0:0:0:0 with SMTP id go10csp108092pxb; Tue, 2 Feb 2021 00:03:21 -0800 (PST) X-Google-Smtp-Source: ABdhPJwNHH86Z5u/Grn62uVARX4ptUesY/nVxsm1LFbiVJVR+17pe7/jk1mRqYZbtHSAqAwnYku8 X-Received: by 2002:a17:907:78d5:: with SMTP id kv21mr8824127ejc.461.1612253001533; Tue, 02 Feb 2021 00:03:21 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1612253001; cv=none; d=google.com; s=arc-20160816; b=i1Tek/jToLVV/IVqAxt3AcRA+61OzNF/SSeLJiueJyyj714ebexDAChmV0nXLzFT2k TeOeT33yFyVZ/8m7TN0oVZtQUSMnlIrl2eL/lyoRpmuz06Jcj+SQAcnSG0vFxbsAplG7 wWLONBnccfA53wCM7cSGdNfw8QH5AeiEdkYQbUH3h1/foUAkqYLvudzfir0Lm36kV5Qr JtlyQjeCri25RX+7nwC1oVbU7uEtJG7Btu1rllRH8pd5Mn9vGBSQWnaUs5PZXFoNfRFg bQhgC9wD01hnu2URvzgUF0Ib3wDmbG+zxjjcSJDungGoiUwOlWwvmtbvXlwTVDZA7YdE HQtQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:message-id:date:subject:cc:to:from; bh=CVjrU20G9gFPxmALiU+bjxPFhjghGfs1KoehGI3M4yw=; b=wOcRyINdk8vTc71mxPKBec0XkvhSHKj9riHo8ALx7Gk8WNeAHdww6+tv134RkUOJnY Ita4EhYz5b2BKSlaSLbayF5RQkeBFmbg/pnLC+2HnyZPqnvwY9QwbX71e1R15rW6Y6nD wA2ZJ2ZdIf2k4+I4RkhXSCr7mgf3uQIuG6/qgqo+lWmEWDtXxZkwhWquwd2IOesb2Jpn /2mADGJOH03QHkcuKmEQ9LXcXsVbrFSqqr2774ljPZ9tsrqWG/cQBO830F2o9c7jaVXo kMY0fRCgeBmJcd79CVMQWrEYBQa8eqySv2a8vN2qhydyxVZXL9Le86OK/eKrwgevJJSj 0DkQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id n19si11725480ejh.295.2021.02.02.00.02.56; Tue, 02 Feb 2021 00:03:21 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231641AbhBBIBN (ORCPT + 99 others); Tue, 2 Feb 2021 03:01:13 -0500 Received: from szxga05-in.huawei.com ([45.249.212.191]:12062 "EHLO szxga05-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231658AbhBBIBH (ORCPT ); Tue, 2 Feb 2021 03:01:07 -0500 Received: from DGGEMS406-HUB.china.huawei.com (unknown [172.30.72.60]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4DVHJ60VjMzMT4W; Tue, 2 Feb 2021 15:58:46 +0800 (CST) Received: from localhost.localdomain (10.67.165.24) by DGGEMS406-HUB.china.huawei.com (10.3.19.206) with Microsoft SMTP Server id 14.3.498.0; Tue, 2 Feb 2021 16:00:18 +0800 From: Qi Liu To: , CC: , , Subject: [PATCH] drivers/perf: Prevent forced unbinding of ARM_DMC620_PMU drivers Date: Tue, 2 Feb 2021 15:58:06 +0800 Message-ID: <1612252686-50329-1-git-send-email-liuqi115@huawei.com> X-Mailer: git-send-email 2.8.1 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.67.165.24] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Set "suppress_bind_attrs" to true, so that bind/unbind can be disabled via sysfs and prevent unbinding ARM_DMC620_PMU drivers during perf sampling. Signed-off-by: Qi Liu --- drivers/perf/arm_dmc620_pmu.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/perf/arm_dmc620_pmu.c b/drivers/perf/arm_dmc620_pmu.c index 27f54c0..66ad5b3 100644 --- a/drivers/perf/arm_dmc620_pmu.c +++ b/drivers/perf/arm_dmc620_pmu.c @@ -717,6 +717,7 @@ static struct platform_driver dmc620_pmu_driver = { .driver = { .name = DMC620_DRVNAME, .acpi_match_table = dmc620_acpi_match, + .suppress_bind_attrs = true, }, .probe = dmc620_pmu_device_probe, .remove = dmc620_pmu_device_remove, -- 2.8.1