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=-13.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,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 26523C433DF for ; Mon, 10 Aug 2020 19:22:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E9AFF2080C for ; Mon, 10 Aug 2020 19:22:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597087365; bh=zU3gqLY6kXCnvnQO33yxmEPVxLImmHnlbLEUlpmEZko=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=nnH41qRnET4JSJPdTT4/W22hxaZqaNlMdUbrb98RSF2HMUx6/ov/PneZ/bb4AA4Ng yL1xtLqscIfXoCyagkAMHfzrniw2ERHb14RnOn6q373VSKjf4kUEho7zkknJ0niSVo 9FyNqgOwV7gBGNW3yUPkgztJMijiyCCxgy3xETh4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730357AbgHJTWm (ORCPT ); Mon, 10 Aug 2020 15:22:42 -0400 Received: from mail.kernel.org ([198.145.29.99]:43524 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728615AbgHJTND (ORCPT ); Mon, 10 Aug 2020 15:13:03 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id DD6E8207FF; Mon, 10 Aug 2020 19:13:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597086782; bh=zU3gqLY6kXCnvnQO33yxmEPVxLImmHnlbLEUlpmEZko=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bxQjQvEImmUWKX5MXcvIP3DMT/dXh5+URzZKcO/JVXk/1fZo+iebzbYwoHS3f68ye mCE2ft73xPeHE69tSpvqN49/U7pVYZDorEj14F5H2nEZWKIYIpyaBfJAH+5ztxvMe/ H5xo4Kt0SPMisJ58uawxT54sok1lOA6KiOmkJfpo= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Maulik Shah , Stephen Boyd , Bjorn Andersson , Sasha Levin , linux-arm-msm@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 02/31] soc: qcom: rpmh-rsc: Set suppress_bind_attrs flag Date: Mon, 10 Aug 2020 15:12:30 -0400 Message-Id: <20200810191259.3794858-2-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200810191259.3794858-1-sashal@kernel.org> References: <20200810191259.3794858-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Maulik Shah [ Upstream commit 1a53ce9ab4faeb841b33d62d23283dc76c0e7c5a ] rpmh-rsc driver is fairly core to system and should not be removable once its probed. However it allows to unbind driver from sysfs using below command which results into a crash on sc7180. echo 18200000.rsc > /sys/bus/platform/drivers/rpmh/unbind Lets prevent unbind at runtime by setting suppress_bind_attrs flag. Reviewed-by: Stephen Boyd Signed-off-by: Maulik Shah Link: https://lore.kernel.org/r/1592808805-2437-1-git-send-email-mkshah@codeaurora.org Signed-off-by: Bjorn Andersson Signed-off-by: Sasha Levin --- drivers/soc/qcom/rpmh-rsc.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/soc/qcom/rpmh-rsc.c b/drivers/soc/qcom/rpmh-rsc.c index 3c6f920535eae..519d19f57eee2 100644 --- a/drivers/soc/qcom/rpmh-rsc.c +++ b/drivers/soc/qcom/rpmh-rsc.c @@ -715,6 +715,7 @@ static struct platform_driver rpmh_driver = { .driver = { .name = "rpmh", .of_match_table = rpmh_drv_match, + .suppress_bind_attrs = true, }, }; -- 2.25.1