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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 14A7AC2BA12 for ; Wed, 1 Apr 2020 16:31:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 816F12137B for ; Wed, 1 Apr 2020 16:31:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1585758673; bh=JJOM3HjLV6LrQLoIliOpDZuu/rXCRNIy89pDV+AUuIc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=KuSEnL4exC0f5rj0L75mHHv9WZPf0xApHJWD9mPRQlarzTlrRrdt+IN97d6OAzi2S NqUYg97qGGSBChfXhjVsxNsLG38iIIfuOaeGTKKABSMYaNisIWle/H26xhCXiigr82 QrZxYbWPWCTO8xhm/qgaJC5SCGr6ETGyt0nrKAJo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387877AbgDAQbM (ORCPT ); Wed, 1 Apr 2020 12:31:12 -0400 Received: from mail.kernel.org ([198.145.29.99]:57234 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387811AbgDAQbI (ORCPT ); Wed, 1 Apr 2020 12:31:08 -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 DFF262137B; Wed, 1 Apr 2020 16:31:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1585758668; bh=JJOM3HjLV6LrQLoIliOpDZuu/rXCRNIy89pDV+AUuIc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eE3Mzxg25o+hCW4TXD1++I7qCr0eeocJ4HTaKXot3oAguo5Wf/aNkEW6dYGrif0T7 RQnP8etmheuWgc0suaMtR1smKEshnPymuBWr3pD3X/Cunma7qVFtdqoXFXIZ1ovEjz qa37EdZwY7iWFkAVCb38WhOpFc+0xzStYe2VamAQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dan Carpenter , "David S. Miller" Subject: [PATCH 4.4 38/91] NFC: fdp: Fix a signedness bug in fdp_nci_send_patch() Date: Wed, 1 Apr 2020 18:17:34 +0200 Message-Id: <20200401161527.174558949@linuxfoundation.org> X-Mailer: git-send-email 2.26.0 In-Reply-To: <20200401161512.917494101@linuxfoundation.org> References: <20200401161512.917494101@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: Dan Carpenter [ Upstream commit 0dcdf9f64028ec3b75db6b691560f8286f3898bf ] The nci_conn_max_data_pkt_payload_size() function sometimes returns -EPROTO so "max_size" needs to be signed for the error handling to work. We can make "payload_size" an int as well. Fixes: a06347c04c13 ("NFC: Add Intel Fields Peak NFC solution driver") Signed-off-by: Dan Carpenter Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/nfc/fdp/fdp.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) --- a/drivers/nfc/fdp/fdp.c +++ b/drivers/nfc/fdp/fdp.c @@ -191,7 +191,7 @@ static int fdp_nci_send_patch(struct nci const struct firmware *fw; struct sk_buff *skb; unsigned long len; - u8 max_size, payload_size; + int max_size, payload_size; int rc = 0; if ((type == NCI_PATCH_TYPE_OTP && !info->otp_patch) || @@ -214,8 +214,7 @@ static int fdp_nci_send_patch(struct nci while (len) { - payload_size = min_t(unsigned long, (unsigned long) max_size, - len); + payload_size = min_t(unsigned long, max_size, len); skb = nci_skb_alloc(ndev, (NCI_CTRL_HDR_SIZE + payload_size), GFP_KERNEL);