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 E1FF7C433DF for ; Mon, 10 Aug 2020 19:26:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9CA482080C for ; Mon, 10 Aug 2020 19:26:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597087570; bh=VdDv/tPrzl9Gjvzoe32tHMeY4aINAE3rMv3C+4ryWME=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=FFLWK9dFRxnsEbxHl0e7d18j1MocNe4Qjopraub0rmK7Z3vCxee2xt6kCdx+/mu50 ySDI2apI3oE/ri2plcFDt4RM5olHbxBY9yW20XScjBFUs+IweRxdgHtoXHA+g54jrr CIqLSyk7Z6rpdilrEkCW8OXnrZMA06r4WYvTseDE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730365AbgHJT0J (ORCPT ); Mon, 10 Aug 2020 15:26:09 -0400 Received: from mail.kernel.org ([198.145.29.99]:40884 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728539AbgHJTL5 (ORCPT ); Mon, 10 Aug 2020 15:11:57 -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 E2F8E22B47; Mon, 10 Aug 2020 19:11:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597086716; bh=VdDv/tPrzl9Gjvzoe32tHMeY4aINAE3rMv3C+4ryWME=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qD+rLN+AqL+qKuz47bcWti9eVXB4aEWzje0Mi88LJ0wHDl5GkhMksu22InZscTvVL NsLvxTDmvfNozvwn130LYDoWX6EywAKtigM8eunt3wFhYqTfEzIZWPGnCxbI+Ixc9Q F4CM072UtlK4NWcFHxmngK4KFEbMz3u92DaDjBX4= 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 5.4 02/45] soc: qcom: rpmh-rsc: Set suppress_bind_attrs flag Date: Mon, 10 Aug 2020 15:11:10 -0400 Message-Id: <20200810191153.3794446-2-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200810191153.3794446-1-sashal@kernel.org> References: <20200810191153.3794446-1-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 0ba1f465db122..8924fcd9f5f59 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