Unlike the other MSR_TM_* macros, MSR_TM_ACTIVE does not reference or use its parameter unless CONFIG_PPC_TRANSACTIONAL_MEM is defined. This causes an 'unused variable' compile warning unless the variable is also guarded with CONFIG_PPC_TRANSACTIONAL_MEM.
Reference but do nothing with the argument in the macro to avoid a potential compile warning. Signed-off-by: Christopher M. Riedl <c...@codefail.de> --- arch/powerpc/include/asm/reg.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index e40a921d78f9..c5a3e856191c 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -124,7 +124,7 @@ #ifdef CONFIG_PPC_TRANSACTIONAL_MEM #define MSR_TM_ACTIVE(x) (((x) & MSR_TS_MASK) != 0) /* Transaction active? */ #else -#define MSR_TM_ACTIVE(x) 0 +#define MSR_TM_ACTIVE(x) ((void)(x), 0) #endif #if defined(CONFIG_PPC_BOOK3S_64) -- 2.26.1