cppcheck: Suppress constParameterCallback errors

We have several functions which are used as callbacks for NS_CALL() which
only read their void * parameter, they don't write it.  The
constParameterCallback warning in cppcheck 2.14.1 complains that this
parameter could be const void *, also pointing out that that would require
casting the function pointer when used as a callback.

Casting the function pointers seems substantially uglier than using a
non-const void * as the parameter, especially since in each case we cast
the void * to a const pointer of specific type immediately.  So, suppress
these errors.

I think it would make logical sense to suppress this globally, but that
would cause unmatchedSuppression errors on earlier cppcheck versions.  So,
instead individually suppress it, along with unmatchedSuppression in the
relevant places.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/pasta.c b/pasta.c
index 31e1e00..b85ea2b 100644
--- a/pasta.c
+++ b/pasta.c
@@ -176,6 +176,7 @@ struct pasta_spawn_cmd_arg {
  *
  * Return: this function never returns
  */
+/* cppcheck-suppress [constParameterCallback, unmatchedSuppression] */
 static int pasta_spawn_cmd(void *arg)
 {
 	const struct pasta_spawn_cmd_arg *a;