Commit-ID: 1affc46cffad9f2bc7c9ffec85726446903a58f9 Gitweb: http://git.kernel.org/tip/1affc46cffad9f2bc7c9ffec85726446903a58f9 Author: Jesper Juhl <jj@xxxxxxxxxxxxx> AuthorDate: Sun, 18 Dec 2011 01:05:31 +0100 Committer: Ingo Molnar <mingo@xxxxxxx> CommitDate: Sun, 18 Dec 2011 09:14:31 +0100 x86: Use "do { } while(0)" for empty lock_cmos()/unlock_cmos() macros gcc noticed (when using -Wempty-body) that our use of lock_cmos() and unlock_cmos() in arch/x86/include/asm/mach_traps.h is potentially problematic : arch/x86/include/asm/mach_traps.h:32:15: warning: suggest braces around empty body in an ¡else¢ statement [-Wempty-body] arch/x86/include/asm/mach_traps.h:40:16: warning: suggest braces around empty body in an ¡else¢ statement [-Wempty-body] Let's just use the standard 'do {} while (0)' solution. That shuts up gcc and also prevents future problems if the macros should end up being used in a similar situation elsewhere. Signed-off-by: Jesper Juhl <jj@xxxxxxxxxxxxx> Link: http://lkml.kernel.org/r/alpine.LNX.2.00.1112180103130.21784@xxxxxxxxxxxxxxxxxxxxxxxxx Signed-off-by: Ingo Molnar <mingo@xxxxxxx> --- arch/x86/include/asm/mc146818rtc.h | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/include/asm/mc146818rtc.h b/arch/x86/include/asm/mc146818rtc.h index 01fdf56..0e8e85b 100644 --- a/arch/x86/include/asm/mc146818rtc.h +++ b/arch/x86/include/asm/mc146818rtc.h @@ -81,8 +81,8 @@ static inline unsigned char current_lock_cmos_reg(void) #else #define lock_cmos_prefix(reg) do {} while (0) #define lock_cmos_suffix(reg) do {} while (0) -#define lock_cmos(reg) -#define unlock_cmos() +#define lock_cmos(reg) do { } while (0) +#define unlock_cmos() do { } while (0) #define do_i_have_lock_cmos() 0 #define current_lock_cmos_reg() 0 #endif -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html