From patchwork Tue Sep 22 14:34:21 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe Leroy X-Patchwork-Id: 521078 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 35AA9140291 for ; Wed, 23 Sep 2015 00:34:31 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756816AbbIVOe1 (ORCPT ); Tue, 22 Sep 2015 10:34:27 -0400 Received: from 2.236.17.93.rev.sfr.net ([93.17.236.2]:23835 "EHLO mailhub1.si.c-s.fr" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1758154AbbIVOe0 (ORCPT ); Tue, 22 Sep 2015 10:34:26 -0400 Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id ED0131C926A; Tue, 22 Sep 2015 16:34:22 +0200 (CEST) X-Virus-Scanned: amavisd-new at c-s.fr Received: from mailhub1.si.c-s.fr ([192.168.12.234]) by localhost (mailhub1.c-s.fr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id cgKH2P3-S98Q; Tue, 22 Sep 2015 16:34:22 +0200 (CEST) Received: from messagerie.si.c-s.fr (messagerie [192.168.25.192]) by pegase1.c-s.fr (Postfix) with ESMTP id D4AD21C9232; Tue, 22 Sep 2015 16:34:22 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id BCA9CC73C8; Tue, 22 Sep 2015 16:34:22 +0200 (CEST) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id 13Zx-3k-_rPS; Tue, 22 Sep 2015 16:34:22 +0200 (CEST) Received: from PO10863.localdomain (unknown [192.168.232.142]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 82FABC73C5; Tue, 22 Sep 2015 16:34:22 +0200 (CEST) Received: by localhost.localdomain (Postfix, from userid 0) id BE8CD1A2467; Tue, 22 Sep 2015 16:34:21 +0200 (CEST) Message-Id: <14f0f70d1e59f423f58705d2c6ba971373f45481.1442876807.git.christophe.leroy@c-s.fr> In-Reply-To: References: From: Christophe Leroy Subject: [PATCH 2/9] powerpc: mark xer clobbered in csum_add() To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , scottwood@freescale.com Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, netdev@vger.kernel.org Date: Tue, 22 Sep 2015 16:34:21 +0200 (CEST) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org addc uses carry so xer is clobbered in csum_add() Signed-off-by: Christophe Leroy --- arch/powerpc/include/asm/checksum.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/include/asm/checksum.h b/arch/powerpc/include/asm/checksum.h index e8d9ef4..d2ca07b 100644 --- a/arch/powerpc/include/asm/checksum.h +++ b/arch/powerpc/include/asm/checksum.h @@ -141,7 +141,7 @@ static inline __wsum csum_add(__wsum csum, __wsum addend) #else asm("addc %0,%0,%1;" "addze %0,%0;" - : "+r" (csum) : "r" (addend)); + : "+r" (csum) : "r" (addend) : "xer"); return csum; #endif }