On Mon, 9 Oct 2017 10:40:49 +0200, Geert Uytterhoeven wrote: > On most architectures[*], gcc turns __builtin_ffsll() into a call to > __ffsdi2(), which is not provided by any architecture, leading to > failures like: > > rcar-gen3-cpg.c:(.text+0x289): undefined reference to `__ffsdi2' > > To fix this, use __ffs64() instead, which is available on all > architectures. > > [*] Known exceptions are some 64-bit architectures like amd64, arm64, > ia64, powerpc64, and tilegx. > > Reported-by: kbuild test robot <[email protected]> > Fixes: 3e9b3112ec74f192 ("add basic register-field manipulation macros") > Signed-off-by: Geert Uytterhoeven <[email protected]>
Acked-by: Jakub Kicinski <[email protected]> Thanks!
