Ping.
On Thu, 2019-06-06 at 09:58 -0400, Qian Cai wrote:
> The powerpc's flush_cache_vmap() is defined as a macro and never use
> both of its arguments, so it will generate a compilation warning,
>
> lib/ioremap.c: In function 'ioremap_page_range':
> lib/ioremap.c:203:16: warning: variable 'start' set but not used
> [-Wunused-but-set-variable]
>
> Fix it by making it an inline function.
>
> Signed-off-by: Qian Cai <c...@lca.pw>
> ---
> arch/powerpc/include/asm/cacheflush.h | 7 +++++--
> 1 file changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/arch/powerpc/include/asm/cacheflush.h
> b/arch/powerpc/include/asm/cacheflush.h
> index 74d60cfe8ce5..fd318f7c3eed 100644
> --- a/arch/powerpc/include/asm/cacheflush.h
> +++ b/arch/powerpc/include/asm/cacheflush.h
> @@ -29,9 +29,12 @@
> * not expect this type of fault. flush_cache_vmap is not exactly the right
> * place to put this, but it seems to work well enough.
> */
> -#define flush_cache_vmap(start, end) do { asm
> volatile("ptesync" ::: "memory"); } while (0)
> +static inline void flush_cache_vmap(unsigned long start, unsigned long end)
> +{
> + asm volatile("ptesync" ::: "memory");
> +}
> #else
> -#define flush_cache_vmap(start, end) do { } while (0)
> +static inline void flush_cache_vmap(unsigned long start, unsigned long end) {
> }
> #endif
>
> #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
