From patchwork Fri Jun 18 06:14:25 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiri Slaby X-Patchwork-Id: 464155 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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, 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 8132EC48BDF for ; Fri, 18 Jun 2021 06:15:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6D67C6120A for ; Fri, 18 Jun 2021 06:15:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233135AbhFRGR4 (ORCPT ); Fri, 18 Jun 2021 02:17:56 -0400 Received: from smtp-out2.suse.de ([195.135.220.29]:46728 "EHLO smtp-out2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232964AbhFRGRl (ORCPT ); Fri, 18 Jun 2021 02:17:41 -0400 Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out2.suse.de (Postfix) with ESMTP id 31D851FDFC; Fri, 18 Jun 2021 06:15:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1623996921; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=F5/FmGrKE5ZFei42H0MztKDKgh/V6X8PtUx5LYCmr7s=; b=Vqm5iFk6Qq6iq3cIm1gz8jFI0zOB60Km+3XWaCkhZR5bWV3K9EW/NFmljf0E2LAW7SPEGg 04h+sUL83p3f7lLimDjZYvZKSC0eaLnfPId1g22gF9BqnrPGWkFHpeAWGnLJTUbslj7Kz6 nU3/3c/zundT6gLW6skDH6kINrBuxBo= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1623996921; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=F5/FmGrKE5ZFei42H0MztKDKgh/V6X8PtUx5LYCmr7s=; b=3D6fjC/4WBynAMzenbdUjmnwqqe0tTvWbwEokIokb4y2kT9h/DU8NNpE6dH/0aI2gev59V 1f9WJui9P/gP70DA== Received: from localhost.localdomain (unknown [10.100.208.98]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by relay2.suse.de (Postfix) with ESMTPS id 062C7A3BBA; Fri, 18 Jun 2021 06:15:21 +0000 (UTC) From: Jiri Slaby To: gregkh@linuxfoundation.org Cc: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, Jiri Slaby Subject: [PATCH 19/70] mxser: make xmit ring buffer variables unsigned Date: Fri, 18 Jun 2021 08:14:25 +0200 Message-Id: <20210618061516.662-20-jslaby@suse.cz> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210618061516.662-1-jslaby@suse.cz> References: <20210618061516.662-1-jslaby@suse.cz> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-serial@vger.kernel.org Make the xmit ring buffer pointers and counter (xmit_head, xmit_tail, xmit_cnt) unsigned. Now, the assumptions for the compiler are clear -- they cannot be negative. Signed-off-by: Jiri Slaby --- drivers/tty/mxser.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c index 45f36d92c5ea..53136a7d92b1 100644 --- a/drivers/tty/mxser.c +++ b/drivers/tty/mxser.c @@ -351,9 +351,9 @@ struct mxser_port { u8 read_status_mask; u8 ignore_status_mask; u8 xmit_fifo_size; - int xmit_head; - int xmit_tail; - int xmit_cnt; + unsigned int xmit_head; + unsigned int xmit_tail; + unsigned int xmit_cnt; int closing; struct ktermios normal_termios;