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

[Lucy Mielke]

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@xxxxxxxxxx>
---
 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