From patchwork Mon Jul 12 06:12:42 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 473789 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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, 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 F1DADC07E9E for ; Mon, 12 Jul 2021 07:30:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DABA761419 for ; Mon, 12 Jul 2021 07:30:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243424AbhGLHdm (ORCPT ); Mon, 12 Jul 2021 03:33:42 -0400 Received: from mail.kernel.org ([198.145.29.99]:36830 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344499AbhGLH3e (ORCPT ); Mon, 12 Jul 2021 03:29:34 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 3A7F261419; Mon, 12 Jul 2021 07:25:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1626074731; bh=0Mhtj2ALqFzzEzlMYegUNK373szXjXHWvZKnVqs60so=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ypWljUF782jr0MS2nHPK7malTi+hXRgMnG+R3xaf8SL9DYmfmKtViFqE2HqH4lxTJ sPsz4YUzxRhywMK12P+RVx2dueiUb7JAeQ/ZiQUJg9k09mv729dqQ9IxMJsFNtFjKP 1sKrPlbFM3QXS66Cmq9yf+oX/v+ZBI1KVOt99/JI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Randy Dunlap , Guo Ren , linux-csky@vger.kernel.org, Arnd Bergmann , Sasha Levin Subject: [PATCH 5.12 679/700] csky: fix syscache.c fallthrough warning Date: Mon, 12 Jul 2021 08:12:42 +0200 Message-Id: <20210712061048.132835607@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210712060924.797321836@linuxfoundation.org> References: <20210712060924.797321836@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Randy Dunlap [ Upstream commit 0679d29d3e2351a1c3049c26a63ce1959cad5447 ] This case of the switch statement falls through to the following case. This appears to be on purpose, so declare it as OK. ../arch/csky/mm/syscache.c: In function '__do_sys_cacheflush': ../arch/csky/mm/syscache.c:17:3: warning: this statement may fall through [-Wimplicit-fallthrough=] 17 | flush_icache_mm_range(current->mm, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 18 | (unsigned long)addr, | ~~~~~~~~~~~~~~~~~~~~ 19 | (unsigned long)addr + bytes); | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ../arch/csky/mm/syscache.c:20:2: note: here 20 | case DCACHE: | ^~~~ Fixes: 997153b9a75c ("csky: Add flush_icache_mm to defer flush icache all") Signed-off-by: Randy Dunlap Signed-off-by: Guo Ren Cc: linux-csky@vger.kernel.org Cc: Arnd Bergmann Signed-off-by: Sasha Levin --- arch/csky/mm/syscache.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/csky/mm/syscache.c b/arch/csky/mm/syscache.c index ffade2f9a4c8..4e51d63850c4 100644 --- a/arch/csky/mm/syscache.c +++ b/arch/csky/mm/syscache.c @@ -17,6 +17,7 @@ SYSCALL_DEFINE3(cacheflush, flush_icache_mm_range(current->mm, (unsigned long)addr, (unsigned long)addr + bytes); + fallthrough; case DCACHE: dcache_wb_range((unsigned long)addr, (unsigned long)addr + bytes);