[PATCH] static_call: fix unused variable warning

From: Carlos Llamas <cmllamas@google.com>
To: Peter Zijlstra <peterz@infradead.org>,
	Josh Poimboeuf <jpoimboe@redhat.com>,
	Jason Baron <jbaron@akamai.com>,
	Steven Rostedt <rostedt@goodmis.org>,
	Ard Biesheuvel <ardb@kernel.org>, Ingo Molnar <mingo@kernel.org>
Cc: linux-kernel@vger.kernel.org, Carlos Llamas <cmllamas@google.com>,
	"kernelci . org bot" <bot@kernelci.org>
Subject: [PATCH] static_call: fix unused variable warning
Date: Fri, 16 Apr 2021 19:43:00 +0000	[thread overview]
Message-ID: <20210416194300.3952208-1-cmllamas@google.com> (raw)

'mod' is not used when !CONFIG_MODULES. Mark as __maybe_unused to
fix the following warning:

kernel/static_call.c: In function ‘__static_call_update’:
kernel/static_call.c:153:18: warning: unused variable ‘mod’ [-Wunused-variable]
  153 |   struct module *mod = site_mod->mod;
      |                  ^~~

Fixes: 9183c3f9ed71 ("static_call: Add inline static call infrastructure")
Reported-by: kernelci.org bot <bot@kernelci.org>
Signed-off-by: Carlos Llamas <cmllamas@google.com>
---
 kernel/static_call.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/static_call.c b/kernel/static_call.c
index 2c5950b0b90e..8211a34251f8 100644
--- a/kernel/static_call.c
+++ b/kernel/static_call.c
@@ -150,7 +150,7 @@ void __static_call_update(struct static_call_key *key, void *tramp, void *func)
 
 	for (site_mod = &first; site_mod; site_mod = site_mod->next) {
 		bool init = system_state < SYSTEM_RUNNING;
-		struct module *mod = site_mod->mod;
+		struct module __maybe_unused *mod = site_mod->mod;
 
 		if (!site_mod->sites) {
 			/*
-- 
2.31.1.368.gbe11c130af-goog

