linux-kernel - [PATCH] perf/x86/p4: Fix "Wunused-but-set-variable" warning

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Date:   Sat, 7 Oct 2023 20:55:19 +0200
From:   Lucy Mielke <lucymielke@...oud.com>
To:     peterz@...radead.org, mingo@...hat.com, acme@...nel.org,
        mark.rutland@....com, alexander.shishkin@...ux.intel.com,
        jolsa@...nel.org, namhyung@...nel.org, irogers@...gle.com,
        adrian.hunter@...el.com, tglx@...utronix.de, bp@...en8.de,
        dave.hansen@...ux.intel.com, x86@...nel.org, hpa@...or.com
Cc:     linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] perf/x86/p4: Fix "Wunused-but-set-variable" warning

This fixes a compiler warning when compiling an allyesconfig with W=1:
warning: variable ´high´ set but not used [-Wunused-but-set-variable]

Signed-off-by: Lucy Mielke <lucymielke@...oud.com>
---
 arch/x86/events/intel/p4.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/events/intel/p4.c b/arch/x86/events/intel/p4.c
index 35936188db01..69aaf7c0f340 100644
--- a/arch/x86/events/intel/p4.c
+++ b/arch/x86/events/intel/p4.c
@@ -1366,7 +1366,7 @@ static __initconst const struct x86_pmu p4_pmu = {
 
 __init int p4_pmu_init(void)
 {
-	unsigned int low, high;
+	unsigned int low, __maybe_unused high;
 	int i, reg;
 
 	/* If we get stripped -- indexing fails */
-- 
2.42.0