Commit 34dabd81 authored by Linus Torvalds's avatar Linus Torvalds
Browse files
Pull PNP updates from Rafael Wysocki:
 "Get rid of unused variable and function (yu kuai)"

* tag 'pnp-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PNP: isapnp: remove defined but not used function 'isapnp_checksum'
  PNP: isapnp: remove set but not used variable 'checksum'
parents 85c009e8 786c87cd
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+1 −24
Original line number Diff line number Diff line
@@ -746,35 +746,13 @@ __skip:
	}
}

/*
 *  Compute ISA PnP checksum for first eight bytes.
 */
static unsigned char __init isapnp_checksum(unsigned char *data)
{
	int i, j;
	unsigned char checksum = 0x6a, bit, b;

	for (i = 0; i < 8; i++) {
		b = data[i];
		for (j = 0; j < 8; j++) {
			bit = 0;
			if (b & (1 << j))
				bit = 1;
			checksum =
			    ((((checksum ^ (checksum >> 1)) & 0x01) ^ bit) << 7)
			    | (checksum >> 1);
		}
	}
	return checksum;
}

/*
 *  Build device list for all present ISA PnP devices.
 */
static int __init isapnp_build_device_list(void)
{
	int csn;
	unsigned char header[9], checksum;
	unsigned char header[9];
	struct pnp_card *card;
	u32 eisa_id;
	char id[8];
@@ -784,7 +762,6 @@ static int __init isapnp_build_device_list(void)
	for (csn = 1; csn <= isapnp_csn_count; csn++) {
		isapnp_wake(csn);
		isapnp_peek(header, 9);
		checksum = isapnp_checksum(header);
		eisa_id = header[0] | header[1] << 8 |
			  header[2] << 16 | header[3] << 24;
		pnp_eisa_id_to_string(eisa_id, id);