14 static __always_inline unsigned long __ffs(unsigned long word)  in __ffs()  argument
19 	if ((word & 0xffffffff) == 0) {  in __ffs()
21 		word >>= 32;  in __ffs()
24 	if ((word & 0xffff) == 0) {  in __ffs()
26 		word >>= 16;  in __ffs()
28 	if ((word & 0xff) == 0) {  in __ffs()
30 		word >>= 8;  in __ffs()
32 	if ((word & 0xf) == 0) {  in __ffs()
34 		word >>= 4;  in __ffs()
36 	if ((word & 0x3) == 0) {  in __ffs()
38 		word >>= 2;  in __ffs()
40 	if ((word & 0x1) == 0)  in __ffs()