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=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,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 E4E09C433E3 for ; Mon, 17 Aug 2020 15:22:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B6B6A2312B for ; Mon, 17 Aug 2020 15:22:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597677744; bh=VVwKLpYeuD89UFfGouxauKaEfbKlFUh+w/sVl+NZxHM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=uGmAQAdK2m7BmDSvP6HqYCmej0BFt3MogTCXb5knRyy9zTeMkcAfXi/6E2hGjXinl jVOLPEbxxYprZBfg7LxE4eK87cxgczhnJyBa7CJnpGTSIy3LPX+c6QRHT+ZyIdMXXx TNvGVcaOJ1VC7yp42pVbcWexXeXrFuL9DsJWLQG0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729455AbgHQPWW (ORCPT ); Mon, 17 Aug 2020 11:22:22 -0400 Received: from mail.kernel.org ([198.145.29.99]:44502 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729382AbgHQPVp (ORCPT ); Mon, 17 Aug 2020 11:21:45 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C952322BF5; Mon, 17 Aug 2020 15:21:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597677705; bh=VVwKLpYeuD89UFfGouxauKaEfbKlFUh+w/sVl+NZxHM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nZLHGjhcu4y10JWHm2JtK9t7d3cX+WNhuQzDM7G4dHXn+14Nznyx/KvAp65uF0cE4 hT3kjSboYzqvvHp0CpDfg2rV53nvWmKuK6z+3HnIjOHDy4pnF+YEh5hcMBySwMQ885 Xg7feWFZUPPFOI0rjx/eXf/lwU5t03aag61fv5+o= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Stephen Boyd , Maulik Shah , Bjorn Andersson , Sasha Levin Subject: [PATCH 5.8 078/464] soc: qcom: rpmh-rsc: Set suppress_bind_attrs flag Date: Mon, 17 Aug 2020 17:10:31 +0200 Message-Id: <20200817143837.516007275@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200817143833.737102804@linuxfoundation.org> References: <20200817143833.737102804@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 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 906778e2c1fae..ae66757825813 100644 --- a/drivers/soc/qcom/rpmh-rsc.c +++ b/drivers/soc/qcom/rpmh-rsc.c @@ -1031,6 +1031,7 @@ static struct platform_driver rpmh_driver = { .driver = { .name = "rpmh", .of_match_table = rpmh_drv_match, + .suppress_bind_attrs = true, }, }; -- 2.25.1