Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #ifndef _ASM_GENERIC_BITOPS_FLS_H_
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #define _ASM_GENERIC_BITOPS_FLS_H_
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * fls - find last (most-significant) bit set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  * @x: the word to search
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  * This is defined the same way as ffs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  * Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) static __always_inline int fls(unsigned int x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	int r = 32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	if (!x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	if (!(x & 0xffff0000u)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 		x <<= 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 		r -= 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	if (!(x & 0xff000000u)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 		x <<= 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 		r -= 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	if (!(x & 0xf0000000u)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 		x <<= 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 		r -= 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	if (!(x & 0xc0000000u)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 		x <<= 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 		r -= 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	if (!(x & 0x80000000u)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 		x <<= 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 		r -= 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	return r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #endif /* _ASM_GENERIC_BITOPS_FLS_H_ */