From: Wang Dongsheng <dongsheng.w...@freescale.com> This issue caused on 'commit 990486c8af04 ("strscpy: zero any trailing garbage bytes in the destination")'.
zero_bytemask is not implemented on PowerPC. So copy the zero_bytemask of BIG_ENDIAN implementation from include/asm-generic/word-at-a-time.h to arch/powerpc/include/asm/word-at-a-time.h. Build message: lib/string.c: In function 'strscpy': lib/string.c:209:4: error: implicit declaration of function 'zero_bytemask' [-Werror=implicit-function-declaration] *(unsigned long *)(dest+res) = c & zero_bytemask(data); cc1: some warnings being treated as errors make[1]: *** [lib/string.o] Error 1 make[1]: *** Waiting for unfinished jobs.... Signed-off-by: Wang Dongsheng <dongsheng.w...@freescale.com> diff --git a/arch/powerpc/include/asm/word-at-a-time.h b/arch/powerpc/include/asm/word-at-a-time.h index 5b3a903..d891456 100644 --- a/arch/powerpc/include/asm/word-at-a-time.h +++ b/arch/powerpc/include/asm/word-at-a-time.h @@ -40,6 +40,10 @@ static inline bool has_zero(unsigned long val, unsigned long *data, const struct return (val + c->high_bits) & ~rhs; } +#ifndef zero_bytemask +#define zero_bytemask(mask) (~1ul << __fls(mask)) +#endif + #else #ifdef CONFIG_64BIT -- 2.1.0.27.g96db324 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/