Annotation of sys/dev/acpi/acpiutil.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: acpiutil.c,v 1.3 2006/12/19 23:01:47 deraadt Exp $ */
! 2: /*
! 3: * Copyright (c) 2005 Thorsten Lockert <tholo@sigmasoft.com>
! 4: *
! 5: * Permission to use, copy, modify, and distribute this software for any
! 6: * purpose with or without fee is hereby granted, provided that the above
! 7: * copyright notice and this permission notice appear in all copies.
! 8: *
! 9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
! 10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
! 11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
! 12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
! 13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
! 14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
! 15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
! 16: */
! 17:
! 18: #include <sys/types.h>
! 19: #include <sys/systm.h>
! 20: #include <sys/device.h>
! 21:
! 22: #include <machine/bus.h>
! 23:
! 24: #include <dev/acpi/acpireg.h>
! 25: #include <dev/acpi/acpivar.h>
! 26:
! 27: u_int
! 28: acpi_checksum(const void *v, size_t len)
! 29: {
! 30: const u_char *p = v;
! 31: u_char s = 0;
! 32: int i;
! 33:
! 34: for (i = 0; i < len; i++)
! 35: s += p[i];
! 36:
! 37: if (s)
! 38: printf("acpi: bad checksum at %p\n", v);
! 39: return (s);
! 40: }
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