From: Arnd Bergmann <arnd@xxxxxxxx> arch_wb_cache_pmem() is declared in a global header but defined by the architecture. On x86, the implementation needs to include the header to avoid this warning: arch/x86/lib/usercopy_64.c:39:6: error: no previous prototype for 'arch_wb_cache_pmem' [-Werror=missing-prototypes] Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> --- arch/x86/lib/usercopy_64.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/lib/usercopy_64.c b/arch/x86/lib/usercopy_64.c index 003d90138e20..e9251b89a9e9 100644 --- a/arch/x86/lib/usercopy_64.c +++ b/arch/x86/lib/usercopy_64.c @@ -9,6 +9,7 @@ #include <linux/export.h> #include <linux/uaccess.h> #include <linux/highmem.h> +#include <linux/libnvdimm.h> /* * Zero Userspace -- 2.39.2
