/* SPDX-License-Identifier: GPL-2.0 */#ifndef _ADFS_FS_H#define _ADFS_FS_H #include <uapi/linux/adfs_fs.h> /* * Calculate the boot block checksum on an ADFS drive.  Note that this will * appear to be correct if the sector contains all zeros, so also check that * the disk size is non-zero!!! */static inline int adfs_checkbblk(unsigned char *ptr){	unsigned int result = 0;	unsigned char *p = ptr + 511; 	do {	        result = (result & 0xff) + (result >> 8);        	result = result + *--p;	} while (p != ptr); 	return (result & 0xff) != ptr[511];}#endif