On Mon, May 02, 2016 at 03:59:28PM +0200, Alexander Gordeev wrote:
> Suggested-by: Thomas Huth <thuth@xxxxxxxxxx>
> Cc: Andrew Jones <drjones@xxxxxxxxxx>
> Cc: Thomas Huth <thuth@xxxxxxxxxx>
> Cc: Radim Krčmář <rkrcmar@xxxxxxxxxx>
> Reviewed-by: Andrew Jones <drjones@xxxxxxxxxx>
> Signed-off-by: Alexander Gordeev <agordeev@xxxxxxxxxx>
> ---
> lib/asm-generic/io.h | 7 +++++--
> 1 file changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/lib/asm-generic/io.h b/lib/asm-generic/io.h
> index 3585ac0..99dd6a5 100644
> --- a/lib/asm-generic/io.h
> +++ b/lib/asm-generic/io.h
> @@ -127,11 +127,14 @@ static inline u64 __bswap64(u64 x)
> ({ u64 __r = !__cpu_is_be() ? __bswap64(x) : ((u64)x); __r; })
> #define cpu_to_be64 be64_to_cpu
>
> +#ifndef mb
> +#define mb() asm volatile("":::"memory")
> +#endif
> #ifndef rmb
> -#define rmb() do { } while (0)
> +#define rmb() asm volatile("":::"memory")
> #endif
> #ifndef wmb
> -#define wmb() do { } while (0)
> +#define wmb() asm volatile("" ::: "memory")
> #endif
nit: spacing not consistent. wmb has spaces, the others don't.
I don't really care, but since you'll need a v5 anyway...
>
> #define readb(addr) \
> --
> 1.8.3.1
>
> --
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