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=-9.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,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 E9FA9C43381 for ; Mon, 4 Mar 2019 08:39:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B885320836 for ; Mon, 4 Mar 2019 08:39:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1551688797; bh=EFko5CZtXZ6xLx1sXQrM9RK9rO9o5ACk7foEUeVkc90=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=r5nR92kbksYdH87ToH1hFWFpgyGDpGZKHyfZd6yjD66QKy/bbUN1EdIuFpCUcwJrX fr2MuN9A1uSfVV1f1s1KmZIgGyEGvk/jYTrPnB9VJcs5SbaT03oyzWZHVLjaVknYBx NgTdSMuC9KlTX9C4hs0PEYoBeG8TW7jp8MaROs4g= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726484AbfCDIju (ORCPT ); Mon, 4 Mar 2019 03:39:50 -0500 Received: from mail.kernel.org ([198.145.29.99]:37880 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727842AbfCDIdW (ORCPT ); Mon, 4 Mar 2019 03:33:22 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.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 5806120823; Mon, 4 Mar 2019 08:33:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1551688401; bh=EFko5CZtXZ6xLx1sXQrM9RK9rO9o5ACk7foEUeVkc90=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Oh+SD+g8Mz/hedOmKjDzuDTnBQfYtM1TKUyhCSz0MzuogZuTpNtS4b7/LgjxtvbIW u7D/fRcgRbXFQf3lok+fsU3fhD7hIp9ZulNrd/aLFvkrunopG60BtcPPx2jPzgWLlh HkkKpsfqn8TIzfheM7K5Kf4BjBeyjLMr7bhoou6E= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Nathan Chancellor , Sasha Levin Subject: [PATCH 4.20 33/88] staging: rtl8723bs: Fix build error with Clang when inlining is disabled Date: Mon, 4 Mar 2019 09:22:16 +0100 Message-Id: <20190304081631.904376999@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190304081630.610632175@linuxfoundation.org> References: <20190304081630.610632175@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org 4.20-stable review patch. If anyone has any objections, please let me know. ------------------ [ Upstream commit 97715058b70da1262fd07798c8b2e3e894f759dd ] When CONFIG_NO_AUTO_INLINE was present in linux-next (which added '-fno-inline-functions' to KBUILD_CFLAGS), an allyesconfig build with Clang failed at the modpost stage: ERROR: "is_broadcast_mac_addr" [drivers/staging/rtl8723bs/r8723bs.ko] undefined! ERROR: "is_zero_mac_addr" [drivers/staging/rtl8723bs/r8723bs.ko] undefined! ERROR: "is_multicast_mac_addr" [drivers/staging/rtl8723bs/r8723bs.ko] undefined! These functions were marked as extern inline, meaning that if inlining doesn't happen, the function will be undefined, as it is above. This happens to work with GCC because the '-fno-inline-functions' option respects the __inline attribute so all instances of these functions are inlined as expected and the definition doesn't actually matter. However, with Clang and '-fno-inline-functions', a function has to be marked with the __always_inline attribute to be considered for inlining, which none of these functions are. Clang tries to find the symbol definition elsewhere as it was told and fails, which trickles down to modpost. To make sure that this code compiles regardless of compiler and make the intention of the code clearer, use 'static' to ensure these functions are always defined, regardless of inlining. Additionally, silence a checkpatch warning by switching from '__inline' to 'inline'. Signed-off-by: Nathan Chancellor Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/staging/rtl8723bs/include/ieee80211.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/staging/rtl8723bs/include/ieee80211.h b/drivers/staging/rtl8723bs/include/ieee80211.h index bcc8dfa8e6728..9efb4dcb9d3a8 100644 --- a/drivers/staging/rtl8723bs/include/ieee80211.h +++ b/drivers/staging/rtl8723bs/include/ieee80211.h @@ -850,18 +850,18 @@ enum ieee80211_state { #define IP_FMT "%pI4" #define IP_ARG(x) (x) -extern __inline int is_multicast_mac_addr(const u8 *addr) +static inline int is_multicast_mac_addr(const u8 *addr) { return ((addr[0] != 0xff) && (0x01 & addr[0])); } -extern __inline int is_broadcast_mac_addr(const u8 *addr) +static inline int is_broadcast_mac_addr(const u8 *addr) { return ((addr[0] == 0xff) && (addr[1] == 0xff) && (addr[2] == 0xff) && \ (addr[3] == 0xff) && (addr[4] == 0xff) && (addr[5] == 0xff)); } -extern __inline int is_zero_mac_addr(const u8 *addr) +static inline int is_zero_mac_addr(const u8 *addr) { return ((addr[0] == 0x00) && (addr[1] == 0x00) && (addr[2] == 0x00) && \ (addr[3] == 0x00) && (addr[4] == 0x00) && (addr[5] == 0x00)); -- 2.19.1