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

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 04c589f35bc5 ("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: 04c589f35bc5 ("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>

diff --git a/drivers/pnp/isapnp/core.c b/drivers/pnp/isapnp/core.c
index e39d49b..c43d8ad 100644 (file)
--- a/drivers/pnp/isapnp/core.c
+++ b/drivers/pnp/isapnp/core.c
@@ -747,28 +747,6 @@ __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.
  */
 static int __init isapnp_build_device_list(void)