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PNP: isapnp: remove defined but not used function 'isapnp_checksum'

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Fix gcc '-Wunused-function' warnning:

drivers/pnp/isapnp/core.c:752:29: warning: 'isapnp_checksum' defined but
not used [-Wunused-function]
752 | static unsigned char __init isapnp_checksum(unsigned char *data)

Commit 04c589f35b ("PNP: isapnp: remove set but not used variable
'checksum'") removes the last caller of the function. It is never used
and so can be removed.

Fixes: 04c589f35b ("PNP: isapnp: remove set but not used variable 'checksum'")
Signed-off-by: yu kuai <yukuai3@huawei.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
yu kuai 2020-01-20 09:23:31 +08:00 committed by Rafael J. Wysocki
parent 04c589f35b
commit 786c87cd31
1 changed files with 0 additions and 22 deletions
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22
drivers/pnp/isapnp/core.c
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@ -746,28 +746,6 @@ __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. * Build device list for all present ISA PnP devices.
*/ */