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=-6.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 3D148C4360F for ; Mon, 1 Apr 2019 17:29:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 01B5320856 for ; Mon, 1 Apr 2019 17:29:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1554139797; bh=rvDgQ9ZvYXZmV+FlgaYrZTYDytkJz8P4BaPupGVSxMA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=KY+bldIyeogz/FQkAW6kTrlPDVGjBbdT+uYjDFCsfeF7WClbp6aOK2YW8P1JsPjwr 3my6jPXUFEhXMORsLzuvCyemVy2WobrYBR8vxKqmuu4BFfK39rntan6f4ecLLJh/If 6/QRkXYYD3GtJHtw8DxAzNGJdA3IRtvlJeqip3CM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733016AbfDAR34 (ORCPT ); Mon, 1 Apr 2019 13:29:56 -0400 Received: from mail.kernel.org ([198.145.29.99]:36488 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732092AbfDAR3w (ORCPT ); Mon, 1 Apr 2019 13:29:52 -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 94FA020880; Mon, 1 Apr 2019 17:29:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1554139792; bh=rvDgQ9ZvYXZmV+FlgaYrZTYDytkJz8P4BaPupGVSxMA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rFh2L7qhCDumqiDMsn16wfq7kgPdrsP0eDIe95d/h6vIGHsrY0Or7DDp13ioYKH/8 Mv1la9mHUSigNUBG3kBlaaR6CVuC2BO9l7RN1IHK/5gslqhXjutd2HgL6hXQggFHdN /PtuWaNJnbuv+3Ksa6apZhOjZSWtXvkd45SYJgoY= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Yuan Juntao , Pawel Wodkowski , Ulf Hansson , Arnd Bergmann Subject: [PATCH 4.4 016/131] mmc: debugfs: Add a restriction to mmc debugfs clock setting Date: Mon, 1 Apr 2019 19:01:26 +0200 Message-Id: <20190401170053.272201270@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190401170051.645954551@linuxfoundation.org> References: <20190401170051.645954551@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore 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 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Chuanxiao Dong commit e5905ff1281f0a0f5c9863c430ac1ed5faaf5707 upstream. Clock frequency values written to an mmc host should not be less than the minimum clock frequency which the mmc host supports. Signed-off-by: Yuan Juntao Signed-off-by: Pawel Wodkowski Signed-off-by: Ulf Hansson Signed-off-by: Arnd Bergmann Signed-off-by: Greg Kroah-Hartman --- drivers/mmc/core/debugfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/mmc/core/debugfs.c +++ b/drivers/mmc/core/debugfs.c @@ -220,7 +220,7 @@ static int mmc_clock_opt_set(void *data, struct mmc_host *host = data; /* We need this check due to input value is u64 */ - if (val > host->f_max) + if (val != 0 && (val > host->f_max || val < host->f_min)) return -EINVAL; mmc_claim_host(host);