From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Subject: alpha: agp: make empty macros use do-while-0 style Copy these macros from ia64/include/asm/agp.h to avoid the "empty-body" in 'if' statment warning. drivers/char/agp/generic.c: In function 'agp_generic_destroy_page': ../drivers/char/agp/generic.c:1265:42: warning: suggest braces around empty body in an 'if' statement [-Wempty-body] 1265 | unmap_page_from_agp(page); Link: https://lkml.kernel.org/r/20210809030822.20658-1-rdunlap@xxxxxxxxxxxxx Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Cc: Richard Henderson <rth@xxxxxxxxxxx> Cc: Ivan Kokshaysky <ink@xxxxxxxxxxxxxxxxxxxx> Cc: Matt Turner <mattst88@xxxxxxxxx> Cc: David Airlie <airlied@xxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- arch/alpha/include/asm/agp.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/arch/alpha/include/asm/agp.h~alpha-agp-make-empty-macros-use-do-while-0-style +++ a/arch/alpha/include/asm/agp.h @@ -6,8 +6,8 @@ /* dummy for now */ -#define map_page_into_agp(page) -#define unmap_page_from_agp(page) +#define map_page_into_agp(page) do { } while (0) +#define unmap_page_from_agp(page) do { } while (0) #define flush_agp_cache() mb() /* GATT allocation. Returns/accepts GATT kernel virtual address. */ _
