netfilter: xt_LOG: don't use xchg() for simple assignment
authorJan Beulich <JBeulich@suse.com>
Wed, 7 Mar 2012 23:45:44 +0000 (23:45 +0000)
committerGrazvydas Ignotas <notasas@gmail.com>
Sun, 28 Feb 2016 01:55:13 +0000 (03:55 +0200)
At least on ia64 the (bogus) use of xchg() here results in the compiler
warning about an unused expression result. As only an assignment is
intended here, convert it to such.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
include/net/netfilter/xt_log.h

index 0dfb34a..a417c11 100644 (file)
@@ -47,7 +47,7 @@ static void sb_close(struct sbuff *m)
        if (likely(m != &emergency))
                kfree(m);
        else {
        if (likely(m != &emergency))
                kfree(m);
        else {
-               xchg(&emergency_ptr, m);
+               emergency_ptr = m;
                local_bh_enable();
        }
 }
                local_bh_enable();
        }
 }