From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnd Bergmann Subject: [PATCH 06/13] ARM: atomic: fix gcc-4.4 build Date: Fri, 16 Dec 2016 11:56:27 +0100 Message-ID: <20161216105634.235457-7-arnd@arndb.de> References: <20161216105634.235457-1-arnd@arndb.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20161216105634.235457-1-arnd@arndb.de> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu To: linux-arch@vger.kernel.org Cc: Arnd Bergmann , kernel-build-reports@lists.linaro.org, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, Russell King , Andrew Morton , kvmarm@lists.cs.columbia.edu, linux-arm-kernel@vger.kernel.org List-Id: linux-arch.vger.kernel.org gcc-4.4 fails to build some files with this constraint, which was added to help out with gcc-4.6 and higher: fs/btrfs/delayed-ref.c: In function 'add_delayed_tree_ref': arch/arm/include/asm/atomic.h:280: error: 'asm' operand requires impossible reload Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44492 Signed-off-by: Arnd Bergmann --- arch/arm/include/asm/atomic.h | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/arch/arm/include/asm/atomic.h b/arch/arm/include/asm/atomic.h index 66d0e215a773..65d5b843831a 100644 --- a/arch/arm/include/asm/atomic.h +++ b/arch/arm/include/asm/atomic.h @@ -280,7 +280,10 @@ static inline long long atomic64_read(const atomic64_t *v) __asm__ __volatile__("@ atomic64_read\n" " ldrd %0, %H0, [%1]" : "=&r" (result) - : "r" (&v->counter), "Qo" (v->counter) + : "r" (&v->counter) +#if GCC_VERSION >= 40600 + , "Qo" (v->counter) +#endif ); return result; @@ -302,7 +305,10 @@ static inline long long atomic64_read(const atomic64_t *v) __asm__ __volatile__("@ atomic64_read\n" " ldrexd %0, %H0, [%1]" : "=&r" (result) - : "r" (&v->counter), "Qo" (v->counter) + : "r" (&v->counter) +#if GCC_VERSION >= 40600 + , "Qo" (v->counter) +#endif ); return result; -- 2.9.0 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mout.kundenserver.de ([217.72.192.74]:59246 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760724AbcLPK5G (ORCPT ); Fri, 16 Dec 2016 05:57:06 -0500 From: Arnd Bergmann Subject: [PATCH 06/13] ARM: atomic: fix gcc-4.4 build Date: Fri, 16 Dec 2016 11:56:27 +0100 Message-ID: <20161216105634.235457-7-arnd@arndb.de> In-Reply-To: <20161216105634.235457-1-arnd@arndb.de> References: <20161216105634.235457-1-arnd@arndb.de> Sender: linux-arch-owner@vger.kernel.org List-ID: To: linux-arch@vger.kernel.org Cc: linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@vger.kernel.org, Russell King , Andrew Morton , kernel-build-reports@lists.linaro.org, kvmarm@lists.cs.columbia.edu, Arnd Bergmann Message-ID: <20161216105627.SMOZ_hl5Xmm32m4Jo64C_zBffDZm8u8hVOYmwEE0yKo@z> gcc-4.4 fails to build some files with this constraint, which was added to help out with gcc-4.6 and higher: fs/btrfs/delayed-ref.c: In function 'add_delayed_tree_ref': arch/arm/include/asm/atomic.h:280: error: 'asm' operand requires impossible reload Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44492 Signed-off-by: Arnd Bergmann --- arch/arm/include/asm/atomic.h | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/arch/arm/include/asm/atomic.h b/arch/arm/include/asm/atomic.h index 66d0e215a773..65d5b843831a 100644 --- a/arch/arm/include/asm/atomic.h +++ b/arch/arm/include/asm/atomic.h @@ -280,7 +280,10 @@ static inline long long atomic64_read(const atomic64_t *v) __asm__ __volatile__("@ atomic64_read\n" " ldrd %0, %H0, [%1]" : "=&r" (result) - : "r" (&v->counter), "Qo" (v->counter) + : "r" (&v->counter) +#if GCC_VERSION >= 40600 + , "Qo" (v->counter) +#endif ); return result; @@ -302,7 +305,10 @@ static inline long long atomic64_read(const atomic64_t *v) __asm__ __volatile__("@ atomic64_read\n" " ldrexd %0, %H0, [%1]" : "=&r" (result) - : "r" (&v->counter), "Qo" (v->counter) + : "r" (&v->counter) +#if GCC_VERSION >= 40600 + , "Qo" (v->counter) +#endif ); return result; -- 2.9.0