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=-19.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,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 D6BA3C433DB for ; Mon, 22 Mar 2021 21:51:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 964DB619A8 for ; Mon, 22 Mar 2021 21:51:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229872AbhCVVui (ORCPT ); Mon, 22 Mar 2021 17:50:38 -0400 Received: from mail.kernel.org ([198.145.29.99]:40382 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229467AbhCVVuL (ORCPT ); Mon, 22 Mar 2021 17:50:11 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id C6864619A3; Mon, 22 Mar 2021 21:50:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1616449810; bh=kXIKly4tZYQVuwd+3BpHcBsCSfm7/1M3LxzZllM8rXg=; h=From:To:Cc:Subject:Date:From; b=cMt+7qQe84KlJyfvT1fhd6a7E0bUco+56VgGUjja+j0UcqTS6Id58qTDELwfvuHr5 Q/AJdK5LRIYs2nTp7KGW4vYkAsFnufELpKGlOe7qnAxwUHLP0PlNk1qS5at+rYDzgJ pkx7ha1dvpwFCnzB5Ix+HYilsiEaxC1RLVbK730ydMnIzwmnm3fGwLAKUb/i7MOnmp qRclC6vQ3iGVSqS0XwrFwwYXx4oSHqvp7x+eQxEXXZFAY9H+cmXkzcJt11nneboPN1 T5t6cIls9UfwaE5KCiTSBZ5H0wutuTItgtGhpAeWqeiiP+VyiKcL/JzIA69qlj//3z xksU3fvLFljAA== From: Arnd Bergmann To: Steven Rostedt , Ingo Molnar Cc: Arnd Bergmann , "Peter Zijlstra (Intel)" , Adrian Hunter , Tobias Klauser , Wei Yang , Chengming Zhou , "Naveen N. Rao" , "Paul E. McKenney" , linux-kernel@vger.kernel.org Subject: [PATCH] ftrace: shut up -Wcast-function-type warning for ftrace_ops_no_ops Date: Mon, 22 Mar 2021 22:49:58 +0100 Message-Id: <20210322215006.1028517-1-arnd@kernel.org> X-Mailer: git-send-email 2.29.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Arnd Bergmann With 'make W=1', gcc warns about casts between incompatible function types: kernel/trace/ftrace.c:128:31: error: cast between incompatible function types from 'void (*)(long unsigned int, long unsigned int)' to 'void (*)(long unsigned int, long unsigned int, struct ftrace_ops *, struct ftrace_regs *)' [-Werror=cast-function-type] 128 | #define ftrace_ops_list_func ((ftrace_func_t)ftrace_ops_no_ops) | ^ As the commet here explains, this one was intentional, so shut up the warning harder by using a double cast. Signed-off-by: Arnd Bergmann --- kernel/trace/ftrace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 4d8e35575549..d8fc87a17421 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -125,7 +125,7 @@ static void ftrace_ops_list_func(unsigned long ip, unsigned long parent_ip, #else /* See comment below, where ftrace_ops_list_func is defined */ static void ftrace_ops_no_ops(unsigned long ip, unsigned long parent_ip); -#define ftrace_ops_list_func ((ftrace_func_t)ftrace_ops_no_ops) +#define ftrace_ops_list_func ((ftrace_func_t)(void *)ftrace_ops_no_ops) #endif static inline void ftrace_ops_init(struct ftrace_ops *ops) -- 2.29.2