From patchwork Wed Jul 12 08:18:05 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiri Slaby X-Patchwork-Id: 702672 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9B56BEB64DD for ; Wed, 12 Jul 2023 08:24:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232498AbjGLIYW (ORCPT ); Wed, 12 Jul 2023 04:24:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51604 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232959AbjGLIXW (ORCPT ); Wed, 12 Jul 2023 04:23:22 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EEEB42D79; Wed, 12 Jul 2023 01:19:18 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 475B2616F5; Wed, 12 Jul 2023 08:18:27 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9E66BC433C7; Wed, 12 Jul 2023 08:18:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1689149906; bh=V1/NAcLOoOa408WI8W7uk/rZlfmxwm9QHIbOEt5OwRU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=orYkW1njU+RHfilaABGyP3E8fD2KCKvgMlwDZ/xaDUL61kCYDr5IJGu1yuTGgcUdS c8FS53v7/jFz+7J3sBg7e6wAJuRIF7Bs9PWsN0jH29ZRH+CpUUjiSUvgFFLhZo33Iw JL9mfrVzDgQ0LQJvxBwyIvdZHR65ES/qNNn1k65UmLGrqFanhSybws+xGmS0NtRZOS 0csZKoT1L6PP2ybXfrD77GiEdpNoK0HgnKPc8PWv8SaIpmstBhyalJV9Kp8PIrDktX RX8AqE5I5FNNdzu3qcniAlfryHJ8VQ8j7GDn10CfL4IPRw42kEfPJcqfyX8B4poB+G hReKvcMeHEFWw== From: "Jiri Slaby (SUSE)" To: gregkh@linuxfoundation.org Cc: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, "Jiri Slaby (SUSE)" Subject: [PATCH 04/10] tty: sysrq: use switch in sysrq_key_table_key2index() Date: Wed, 12 Jul 2023 10:18:05 +0200 Message-ID: <20230712081811.29004-5-jirislaby@kernel.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230712081811.29004-1-jirislaby@kernel.org> References: <20230712081811.29004-1-jirislaby@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-serial@vger.kernel.org Using switch with range cases makes the code more aligned and readable. Expand also that 36 as explicit addition of 10 + 26 to make the source of the constant more obvious. Signed-off-by: Jiri Slaby (SUSE) --- drivers/tty/sysrq.c | 21 ++++++++++----------- 1 file changed, 10 insertions(+), 11 deletions(-) diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c index ccf429ba348e..23198e3f1461 100644 --- a/drivers/tty/sysrq.c +++ b/drivers/tty/sysrq.c @@ -532,17 +532,16 @@ static const struct sysrq_key_op *sysrq_key_table[62] = { /* key2index calculation, -1 on invalid index */ static int sysrq_key_table_key2index(u8 key) { - int retval; - - if ((key >= '0') && (key <= '9')) - retval = key - '0'; - else if ((key >= 'a') && (key <= 'z')) - retval = key + 10 - 'a'; - else if ((key >= 'A') && (key <= 'Z')) - retval = key + 36 - 'A'; - else - retval = -1; - return retval; + switch (key) { + case '0' ... '9': + return key - '0'; + case 'a' ... 'z': + return key - 'a' + 10; + case 'A' ... 'Z': + return key - 'A' + 10 + 26; + default: + return -1; + } } /*