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=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 B4CE0C43381 for ; Fri, 22 Feb 2019 14:43:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8B0AC20823 for ; Fri, 22 Feb 2019 14:43:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727135AbfBVOnY (ORCPT ); Fri, 22 Feb 2019 09:43:24 -0500 Received: from mout.kundenserver.de ([212.227.126.135]:51429 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725978AbfBVOnX (ORCPT ); Fri, 22 Feb 2019 09:43:23 -0500 Received: from wuerfel.lan ([109.192.41.194]) by mrelayeu.kundenserver.de (mreue009 [212.227.15.129]) with ESMTPA (Nemesis) id 1MLA6k-1ggD7c2B8s-00IEXc; Fri, 22 Feb 2019 15:43:10 +0100 From: Arnd Bergmann To: Catalin Marinas , Will Deacon Cc: natechancellor@gmail.com, ndesaulniers@google.com, Arnd Bergmann , Andrey Konovalov , Andrey Ryabinin , Dmitry Vyukov , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH] arm64: avoid clang warning about self-assignment Date: Fri, 22 Feb 2019 15:42:23 +0100 Message-Id: <20190222144301.3516708-1-arnd@arndb.de> X-Mailer: git-send-email 2.20.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Provags-ID: V03:K1:3vMyVhA/NmVqE8rVfJt7N/FIr5UNMdS5rMFHSOEzM3LfFmczuSG EzAhqToaSsNSdgXGQsijk7viVCnMc7EEKtj1uIaDoFTYr8f16BtiaZ/FdzEenc+spaitemW +E61FF0sTXICXZQaJwFD3iiKxXLaNf9E+YwRfuVvxArXKSh09EJfik25dgqHLqzC9Pkhema GiviClDZF+/BliRAHNftg== X-UI-Out-Filterresults: notjunk:1;V03:K0:pUS0q+W4c4E=:E90vViuwwtsZ9RWcqz+rmP X+CtVWP0w8KbG6uCQiAEFb8tJdRb9yg9x72I8fXOyzTKUzO0ngS6EduS+17FyD3sh7Yqzs8ei 9cNqtjRpaaUtOpoTGSVmTzcqHWBaoyU7XF6vmy2DoCl8hXoB9MHThBVXDnynh+nZPWF4hLCIL KoMQUOCARFPR7ewCyAKlOXD/jB49Miz1HVe1Ktq3s9A8Td04/i+BdfXm71sBLyhLFEVx+vJ+C rfEbz9/9idvSn/gdmiCIo1LQrqawsdT5CLyWmM1KTXBtififY1juoNujhgx/1JWxfdbBoxZcY CVZSttvrLRel0O1BbtRiBRVAzFPxC5Iaq3TKWBGGMKnPosflrx5dHY4hq4jxH+4yQizpiVvYe +1Uxw89GKpIcsbNqJtC+XgytymnUB0GROoXamayNUI2gCCaQFFt5ogiyeHv7HQ59oecG0yzcz unHt4ecf1ynVcQWwDjV5MPYR6zHO20i+pntYYiGnJast5JoimOhxXbuEWL0W4IDO8fuNFVoFa EYQTxYZQ8T+WHlgCghuJW3O4DED8M8WmgljPt6bcs4r07acH26kupzy2k7tJZ1XaMjkSpbbL/ i4jiDys7460v7AGGaAO6zu/Fw4htWneuDzcg4N2nemNL6NdEDXIxPe+X2gCrdUVsLs3tokhq6 LKVC5QcRE5ZhTTb0ke2LIRTPPdd7zR6mPkNfw26E6PSJGN3g8FvCONrgrEpLvd0E3wqux4Eks LrMqSATVcEFs48lJ7QOZGL7TJFyy3oC7jKwZRA== Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Building a preprocessed source file for arm64 now always produces a warning with clang because of the page_to_virt() macro assigning a variable to itself. Adding a new temporary variable avoids this issue. Fixes: 2813b9c02962 ("kasan, mm, arm64: tag non slab memory allocated via pagealloc") Signed-off-by: Arnd Bergmann --- arch/arm64/include/asm/memory.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h index b01ef0180a03..290195168bb3 100644 --- a/arch/arm64/include/asm/memory.h +++ b/arch/arm64/include/asm/memory.h @@ -312,8 +312,9 @@ static inline void *phys_to_virt(phys_addr_t x) #define page_to_virt(page) ({ \ unsigned long __addr = \ ((__page_to_voff(page)) | PAGE_OFFSET); \ - __addr = __tag_set(__addr, page_kasan_tag(page)); \ - ((void *)__addr); \ + unsigned long __addr_tag = \ + __tag_set(__addr, page_kasan_tag(page)); \ + ((void *)__addr_tag); \ }) #define virt_to_page(vaddr) ((struct page *)((__virt_to_pgoff(vaddr)) | VMEMMAP_START)) -- 2.20.0