From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753688Ab1A0N4E (ORCPT ); Thu, 27 Jan 2011 08:56:04 -0500 Received: from mail-yx0-f174.google.com ([209.85.213.174]:53846 "EHLO mail-yx0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753496Ab1A0N4A (ORCPT ); Thu, 27 Jan 2011 08:56:00 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; b=iksXEfgttr4BvTXEx4vZhk3tuUENoX48OuTvT9yG4BHI8GIjCcvFjsdZvTtQu2QsaE pXF+p0b+NSO640wt2rlAwflJe0kDu7J0ok6GObR5G761IiZjaFsvCU6Sz2SWAFSLL60t UVxNB/gttMOYqvOwJT02xUFnl/yq3VU0loo3Y= From: Akinobu Mita To: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, akpm@linux-foundation.org Cc: Akinobu Mita , Arnd Bergmann , Martin Schwidefsky , Heiko Carstens Subject: [PATCH -mm 3/6] s390: convert little-endian bitops macros to static inline functions Date: Thu, 27 Jan 2011 22:56:20 +0900 Message-Id: <1296136583-13815-4-git-send-email-akinobu.mita@gmail.com> X-Mailer: git-send-email 1.7.3.4 In-Reply-To: <1296136583-13815-1-git-send-email-akinobu.mita@gmail.com> References: <1296136583-13815-1-git-send-email-akinobu.mita@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org (This patch is intended to be folded into the patch in -mm: s390-introduce-little-endian-bitops.patch) The little-endian bitops on s390 are written as preprocessor macros with the cast to "unsigned long *". This means that even non-pointers will be accepted without an error, and that is a Very Bad Thing. This converts the little-endian bitops macros to static inline functions with proper prototypes. Suggested-by: "H. Peter Anvin" Signed-off-by: Akinobu Mita Cc: Arnd Bergmann Cc: Martin Schwidefsky Cc: Heiko Carstens --- arch/s390/include/asm/bitops.h | 48 ++++++++++++++++++++++++++++----------- 1 files changed, 34 insertions(+), 14 deletions(-) diff --git a/arch/s390/include/asm/bitops.h b/arch/s390/include/asm/bitops.h index 6528b22..e1c8f3a 100644 --- a/arch/s390/include/asm/bitops.h +++ b/arch/s390/include/asm/bitops.h @@ -742,20 +742,40 @@ static inline int sched_find_first_bit(unsigned long *b) * 23 22 21 20 19 18 17 16 31 30 29 28 27 26 25 24 */ -#define __set_bit_le(nr, addr) \ - __set_bit((nr)^(__BITOPS_WORDSIZE - 8), (unsigned long *)(addr)) -#define __clear_bit_le(nr, addr) \ - __clear_bit((nr)^(__BITOPS_WORDSIZE - 8), (unsigned long *)(addr)) -#define __test_and_set_bit_le(nr, addr) \ - __test_and_set_bit((nr)^(__BITOPS_WORDSIZE - 8), (unsigned long *)(addr)) -#define test_and_set_bit_le(nr, addr) \ - test_and_set_bit((nr)^(__BITOPS_WORDSIZE - 8), (unsigned long *)(addr)) -#define __test_and_clear_bit_le(nr, addr) \ - __test_and_clear_bit((nr)^(__BITOPS_WORDSIZE - 8), (unsigned long *)(addr)) -#define test_and_clear_bit_le(nr, addr) \ - test_and_clear_bit((nr)^(__BITOPS_WORDSIZE - 8), (unsigned long *)(addr)) -#define test_bit_le(nr, addr) \ - test_bit((nr)^(__BITOPS_WORDSIZE - 8), (unsigned long *)(addr)) +static inline void __set_bit_le(unsigned long nr, void *addr) +{ + __set_bit(nr ^ (__BITOPS_WORDSIZE - 8), addr); +} + +static inline void __clear_bit_le(unsigned long nr, void *addr) +{ + __clear_bit(nr ^ (__BITOPS_WORDSIZE - 8), addr); +} + +static inline int __test_and_set_bit_le(unsigned long nr, void *addr) +{ + return __test_and_set_bit(nr ^ (__BITOPS_WORDSIZE - 8), addr); +} + +static inline int test_and_set_bit_le(unsigned long nr, void *addr) +{ + return test_and_set_bit(nr ^ (__BITOPS_WORDSIZE - 8), addr); +} + +static inline int __test_and_clear_bit_le(unsigned long nr, void *addr) +{ + return __test_and_clear_bit(nr ^ (__BITOPS_WORDSIZE - 8), addr); +} + +static inline int test_and_clear_bit_le(unsigned long nr, void *addr) +{ + return test_and_clear_bit(nr ^ (__BITOPS_WORDSIZE - 8), addr); +} + +static inline int test_bit_le(unsigned long nr, const void *addr) +{ + return test_bit(nr ^ (__BITOPS_WORDSIZE - 8), addr); +} static inline int find_first_zero_bit_le(void *vaddr, unsigned int size) { -- 1.7.3.4