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=-6.6 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=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 523E6C43441 for ; Sun, 11 Nov 2018 23:52:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1A57320866 for ; Sun, 11 Nov 2018 23:52:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="WkG6W9fD" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1A57320866 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732952AbeKLJmU (ORCPT ); Mon, 12 Nov 2018 04:42:20 -0500 Received: from mail.kernel.org ([198.145.29.99]:37302 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732830AbeKLIS3 (ORCPT ); Mon, 12 Nov 2018 03:18:29 -0500 Received: from localhost (unknown [206.108.79.134]) (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 A2F1421527; Sun, 11 Nov 2018 22:28:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1541975313; bh=HsCTycn7vNpwmWFPtxqiTUZjcl3N2nqyOReAXBP/kns=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WkG6W9fD35qTPf8dYNFmV9ZV+hS2mgInAoz6xS7LL7Eoz/7ZfTkxiAD8xuPPgqriU P3rdFZ+gFTqwHu1OXBFEPBl8hDWmflumqgJFa3ULmexXkaZpfTmqCveed4Gn7DaRPv b25zMtGK6gZsmsfSvNIqpkCB1GURoDZOyWwZ6wZU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Hans Verkuil , Mauro Carvalho Chehab Subject: [PATCH 4.19 298/361] media: cec: integrate cec_validate_phys_addr() in cec-api.c Date: Sun, 11 Nov 2018 14:20:45 -0800 Message-Id: <20181111221657.263533278@linuxfoundation.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181111221619.915519183@linuxfoundation.org> References: <20181111221619.915519183@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review 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 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Hans Verkuil commit e81bff39489a06384822bb38ce7a59f9e365bbe9 upstream. The cec_phys_addr_validate() function will be moved to V4L2, so use a simplified variant of that function in cec-api.c. cec now no longer calls cec_phys_addr_validate() and it can be safely moved to V4L2. Signed-off-by: Hans Verkuil Cc: # for v4.17 and up Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Greg Kroah-Hartman --- drivers/media/cec/cec-api.c | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) --- a/drivers/media/cec/cec-api.c +++ b/drivers/media/cec/cec-api.c @@ -101,6 +101,23 @@ static long cec_adap_g_phys_addr(struct return 0; } +static int cec_validate_phys_addr(u16 phys_addr) +{ + int i; + + if (phys_addr == CEC_PHYS_ADDR_INVALID) + return 0; + for (i = 0; i < 16; i += 4) + if (phys_addr & (0xf << i)) + break; + if (i == 16) + return 0; + for (i += 4; i < 16; i += 4) + if ((phys_addr & (0xf << i)) == 0) + return -EINVAL; + return 0; +} + static long cec_adap_s_phys_addr(struct cec_adapter *adap, struct cec_fh *fh, bool block, __u16 __user *parg) { @@ -112,7 +129,7 @@ static long cec_adap_s_phys_addr(struct if (copy_from_user(&phys_addr, parg, sizeof(phys_addr))) return -EFAULT; - err = cec_phys_addr_validate(phys_addr, NULL, NULL); + err = cec_validate_phys_addr(phys_addr); if (err) return err; mutex_lock(&adap->lock);